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Ordering number : ENN2564B
Monolithic Linear IC
LA3241
Preamplifier for Compact Cassette Recording-Only Use
Overview
The LA3241 is a preamp IC for compact cassette player recording-only use. The distinctive feature of the LA3241 is that it contains mechanical switches which have been so far connected externally as peripheral parts.
Package Dimensions
unit: mm 3067A-DIP24S
[LA3241]
21.0
Applications
* Radio-cassette tape recorder/tape deck-use stereo compact cassette player.
24
13
7.62 6.4
Features
* Wide ALC : ALCW=60dB typ. * 2-step ALC level : ALCVo=0.42V, 0.65V. * On-chip electronic select switches permitting selection of normal/metal tape and normal/higher speed mode recording equalizer. * On-chip mike amp : Gain 25dB typ fixed. * Low-voltage operaton because the Schottky barrier diode is used for ALC rectifier diode. * Wide operating voltage : VCC=4.5 to 14.0V.
1
0.9
12
(0.71)
1.78
0.48
0.95
SANYO: DIP24S (300 mil)
Functions
* * * * Recording preamp Mike amp ALC Electronic switch x2 x1 x1 x6
Specifications
Maximum Ratings at Ta = 25C
Parameter Maximum Supply Voltage Allowable Power Dissipation Operating Temperature Storage Temperature Symbol VCC max Pd max Topr Tstg Conditions Ratings 16 720 -20 to +75 -40 to +125 Unit V mW C C
Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
22502TN (OT)/10700TH (KT)/O147TA, TS No. 2564-1/15
0.51min
3.3 3.9max
(3.25)
0.25
LA3241 Recommended Operating Conditions at Ta = 25C
Parameter Recommended Supply Voltage Operating Voltage range Symbol VCC VCC op Conditions Ratings 6 4.5 to 14.0 Unit V V
Operating Characteristics at Ta = 25C, VCC = 6 V, RL = 10k, f = 1 kHz, 0dB = 0.775 V
Parameter Quiescent Current Quiescent Current [REC Amp] Voltage Gain (Open) Voltage Gain (Closed) Total Harmonic Distortion Maximum Output Voltage Equivalent Input Noise Voltage Input Resistance Crosstalk Channel Balance [Mike Amp] Voltage Gain Voltage Gain Total Harmonic Distortion Maximum Output Voltage Equivalent Input Noise Voltage Input Resistance Crosstalk [ALC] ALC Range ALC Balance ALC Distortion ALC Output Voltage Crosstalk ALCW ALCB ALCTHD ALCVo CT4 CT5 [Switch] On-State Resistance DC Feedback Resistance RON RF1 40 30 50 70 60 k Input range when output distortion becomes 1% aftrer ALC begins to be applied. Output difference between CH1 and CH2. Vi=-40dBm Vi=-40dBm, pin 17 Gnd Vi=-40dBm, pin 17 open Between REC amps REC amp Mike amp 0.37 0.6 45 50 45 55 0 0.15 0.46 0.7 60 70 2 0.80 0.57 0.85 dB dB % V V dB dB VGO2 VG2 THD2 VO2 VNI2 Ri2 CT3 Mike amp REC amp VO=0dBm VO=0.4V THD=1% Rg=2.2k, BPF : 20Hz to 20kHz 40 45 0.8 40 23 50 25 0.1 1.1 1.2 50 60 1.7 60 27 0.7 dB dB V V V k dB VGO1 VG1 THD1 VO max VNI1 Ri1 CT1 CT2 CB Between REC amps REC amp Mike amp Vi=-50dBm VO=0dBm VO=0.4V THD=1% Rg=2.2kW, BPF : 20Hz to 20kHz 40 50 60 0.7 75 41.5 85 43.5 0.1 1.0 1.2 50 70 80 0 2 1.8 60 46.0 0.7 dB dB % V V k dB dB dB Symbol ICCO ICCS Conditions Me/Nor, Nor/High SW off Me/Nor, Nor/High SW on Ratings min 5 10 typ 7.5 15 max 12 20 Unit mA mA
No. 2564-2/15
LA3241 Equivalent Circuit Block Diagram
IN2 24 NF2 23 Nor / High Me / Nor Me / Nor OUT2 OUT2-1 OUT2-2 OUT2 22 21 20 19 ALC IN2 18 SBD 3.6k 50k 50k -+ preamp2 ALC + 50k -50k preamp1 SBD Me / Nor SW 50k 10k MIC -Nor / High Speed ALC Nor / High CONT SW 17 16 MIC OUT 15 RFC 14 R F VCC 13
3.6k
1 IN1
2 NF1
3
4
5
6 OUT1
7 ALC IN1
8 ALC
9 Me / Nor SW
10 MIC NF
Nor / High Me / Nor Me / Nor OUT1 OUT1-1 OUT1-2
Equivalent Circuit
24 3.6k 23 22 21 20 19 18 17 16 15 14 13
TR17 TR13 50k
100
VR2
50k
D4 D5
TR18 TR16 TR15 TR14
10k
TR6 TR3 TR4 50k TR1 TR5 VR1 TR2 50k D2 D1 TR7 50
TR8 TR9 TR10
10k ~ 100A --
100
10k
50
TR9
3.6k
1
2
3
4
5
6
7
8
9
10
50k
+ 11 MIC IN 12 GND Top view
ILA00602
High Speed Charge
TR12
TR11
11
12
ILA00603
No. 2564-3/15
LA3241 Test Circuit Diagram
VNF2VNFS2 SW4 2/2 1 2 300 S14 2 2 1 2/2 1F 1 + + S3 VO2 S9 10k 2 1 1F + 10k 4.7F + + + 100F 8.2k 4.7F 10k A + S11 14 13 2 2 ICC MIC OUT S1 1
300
300
47F
300
4.7F
100k + 19 18 17 16 15
100F VCC GND
ILA00604
24
23
22
21
20
1 S10 1 2
LA3241
1 1F + 300 47F + 2 300 3 300 4 300 5 6 + 1F + 8.2k S5 21 VNF1VNFS1 VO1 7 470k 8 9 4.7F 10 11 12
100k 16k + + 680 10F 2.2k + 220F S8
1/2 VIN1
220F
2 1
+ 1 2 S4 1/2
10k
S13
1 2
100F
+
1 2 S7 S6
2 1 21 MIC IN Top view
No. 2564-4/15
LA3241 Sample Application Circuit
PB Amp IN
1F 8.2k + bias SW(10) VCC 300 4.7F + radio OUT + Level select 10k 4.7F 0.46V ON + 0.7V OFF VCC 100F 100F 13 12 MIC Top view + VCC
radio OUT +
47F
+ Z1 Z2 Z3
+
100k
24
23
22
21
20
19
18 SBD
17
16
15
14 RF
3.6k
50k 50k -ALC + 50k -preamp1
SBD
Nor / High Speed
10k
SBD Me / Not SW SBD
3.6k
50k
1
2 47F +
3 Z1
4 Z2
5 Z3
6 + 4.7F
7
8 470k
+
+
300
4.7F
PB Amp IN
680 10F VCC
9 10 100k + 10k
50k 11 SW(9)
1F + bias VCC 8.2k
100F
(Notes) 1. The electronic select switch level is approximately (VCC-0.9)/2. 2. REC amplifier NF parameters Z1 through Z3 should be selected to accommodate the recording level and frequency response that will be required in metal/normal tape and normal/higher speed modes. 3. Z1 through Z3 may be configured with coil "L", capacitor "C", and resistor "R". 4. The electronic select switch mode illustrated above shown no VCC being impressed on Me/Nor SW or Nor/High SW. 5. The ALC level on pin 7 should not be changed over while VCC is impressed.
+
preamp2 MIC
ILA00605
No. 2564-5/15
LA3241 Usage Notes (1) Input pins 1 and 24 have internal resistors of 3.6 k (typical) inserted. When applying external voltages to input pins 1 and 24, insert capacitors in the input. We recommend capacitances in the range 0.1 to 10 F. The DC voltage VIN DC when pins 1 or 24 is left open will be 50 mV or lower.
C 1 24 50k 3.6k
(VIN DC = 20 mV typical) See the VCC - VIN DC Characteristics for the supply voltage VCC and VIN DC characteristics.
ILA00607
(2) Output waveform starting time
200
SW
3k
VCC on
VCC
Cr
+
ts
ILA00608
ILA00609
When the supply voltage VCC is applied, the amplifier outputs (pins 6 and 19) start up. The output waveform turn-on time, ts, can be modified by adding the capacitor Cr to pin 12. The minimum value for Cr is 33 F. Values smaller than this will aggravate the power-on impulse noise and degrade the ripple rejection ratio. At Cr = 100 F, ts will be 0.7 s, typical. (3) Electronic switch control circuit
~ 0.9V -13 R1 3k 14 200 1k 1k 100 R1=R2 R2 + VCC
The control pin (pins 9 and 16) switching circuit has the structure shown in the figure. The control circuit switching level, VCONT, is given by the following formula. VCONT = 1/2 x (VCC - 0.9) [V]
~ 4Amin -16
9
~ 300A --
ILA00610
No. 2564-6/15
LA3241 (4) Relationship between the electronic switch on and off control voltage levels and the power supply voltage (See VCC - VCONT for the data.) When the supply voltage VCC is determined, the corresponding electronic switch control pin (pins 9 and 16) control levels will be determined. There is a threshold area of about 1 V. The center point of the threshold area for a given supply voltage VCC will be roughly: 1/2 x (VCC - 0.9) [V] Therefore, the electronic switches can be turned on and off reliably by applying voltages that are at least 0.5 V of this center point voltage to the electronic switch control pins (pins 9 and 16).
ILA00611
VCONT
Pin9,16(V)
VCC(V)
(5) Add a 470 pF capacitor between pin 15 and ground to prevent oscillation at low temperature in the microphone amplifier output.
input
50k
11 10
+ 15 -10k
+ 470pF
output
ILA00612
(6) The ALC switching level can be implemented with pin 7. The IC supply voltage VCC must be turned off temporarily when switching to prevent ALC failure.
ALC Drive SBD x 4 18 50 TR1 50 7 TR2 8 17
ILA00613
Rectifier Block Equivalent Circuit (7) Although the ALC level is converted by opening (0.7 V) or shorting (0.46 V) pin 17, basically, the ALC start DC threshold level is switched by turning transistor TR2 on (pin 17 open) or off (pin 17 shorted).
No. 2564-7/15
LA3241 LA3241 and LA3246 Cassette Dubbing System Circuit Example
L 1/2 SP 1/2 Radio Tape PB REC Dubbing 47F P 180 + on 4.7F 47F 18k 12k 0.01F 20 19 R2 F2 F1 R1 1 P 180 + 2 18 300k -- Pre a 2 2k 17 16 15 + off + Nor 10k Met 10F IFout=10mA max VO=VCC --1(V) SP Radio R
LA4505
Tape A
14
13
12
11
Met / Nor Mix 0dB
LA3246
F/R
Pre a -- 1 300k 3 0.01F 12k 47F 4 12k
Nor / High Speed 5 6 2.7k 100k 0.047F 7 8
9
10
100k 4.7F 10k + +
4.7F
4.7F
R/P
Bias PB REC
VCC 300 47F
PB REC +
10k
PB REC 3.6k
24
23 50k 50k -+
22
21
20
19
18
17
100k 16 15
14 RF
Pre a 2
Nor / High Speed MIC
ALC 50k Pre a 1 50k -+
10k
3.6k
Met / Nor
1 47F +
2 +
3
4
5
6
7 470k
8 100F
9 100k 10k
10 10F 680
50k
11 1F +
1F 300 4.7F +
TapeB
4.7F
8.2k Bias VCC PB REC 1F + off on ALC Met Nor
PB REC x
+
+
+
R/P
+
0.46V
4.7F
100F
+
+
+
+
TapeB
4.7F 8.2k
+
Tape A
18k
10k
Tape Radio
Nor High Level Sensor
F
R
LA2000
on
1F
off Dubbing ALC VO 0.7V
High / Nor
13
LA3241
12
ECM
ILA00614
No. 2564-8/15
100F
2.7k
+
+
100k
VCC 0.047F
100F
+
VCC
+
+
+
LA3241
ICCO -- Ta
Voltage gain (closed circuit), VG -- dB
Rg=3.6k VI=0
VCC =1 6.0V 12.0V 9.0V
10
20 18
50
VG -- Ta
REC AMP VO=0dBm fi=1kHz
Quiescent current, ICCO -- mA
16 14 12
48
46
12.0V
=16.0 VCC V
9.0V
44
6.0V
8 6 4 2 0 --20 0 20 40 60 80 100 ILA00615
4.5V
42
6.0V V 4.5
40
38 --20
0
20
40
60
80
100 ILA00616
Ambient temperature, Ta -- C
5.0
Ambient temperature, Ta -- C
1.0
VO max -- Ta
ALC output voltage, VO ALC -- V
REC AMP THD=1% fi=1kHz
VC 6 =1 C
VO ALC -- Ta
REC AMP 17short 0.42V
Maximum output voltage, VO max -- V
4.0
0.8
3.0
12.0V
0.6
VCC=4.5V 6.0V 9.0V 12.0V 16.0V
.0 V
2.0
9.0V 6.0V 4.5V
0.4
1.0
0.2
0 --20
0
20
40
60
80
100 ILA00617
0 --20
0
20
40
60
80
100 ILA00618
Ambient temperature, Ta -- C
1.4
Ambient temperature, Ta -- C
30
VO ALC -- Ta
Maximum output voltage, VO max -- V
REC AMP 17short 0.65V
VO max -- Ta
MIC AMP VO=0dBm fi=1kHz
12.0V
ALC output voltage, VO ALC -- V
1.2
28
1.0
0.8
4.5V
6.0V
26
6.0V V CC=1
24
4.5V
0.6
12.0
0.4
V
9.0V
VCC=16.0V
6.0V
22
9.0V
0.2 0 --20
20
0
20
40
60
80
100 ILA00619
18 --20
0
20
40
60
80
100 ILA00620
Ambient temperature, Ta -- C
1.6
Ambient temperature, Ta -- C
90
VO max -- Ta
Voltage gain (open circuit), VGO -- dB Voltage gain (closed circuit), VG -- dB
MIC AMP THD=1% fi=1kHz
VC = C 16.0 V, 12.0 V
VGO, VG -- fi
CNF=220F VCC=6.0V VO=0dBm
Maximum output voltage, VO max -- V
1.4 1.2 1.0 0.8
80
70
9.0, 6.0
4.5V
V
60
Me / Nor & Nor / High SW on
50
0.6 0.4 0.2 0 --20
With either the Me/Nor or the Nor/High switch on
40
Nor / High & Me / Nor SW off
30 20 2
0
20
40
60
80
100 ILA00621
3
5
100
23
5
1k
2
3
5
10k
23
Ambient temperature, Ta -- C
Input frequency, fi -- Hz
5 100k ILA00622
No. 2564-9/15
LA3241
VGO, VG -- fi
CNF=220F MIC AMP VCC=6.0V VO=0dBm
Quiescent current, ICCO -- mA Quiescent current (with the electronic switch on), ICCS -- mA
90
25
ICCO, ICCS -- VCC
Rg=3.6k
Voltage gain (open circuit), VGO -- dB Voltage gain (closed circuit), VG -- dB
80 70 60 50 40 30 20 10 2
20
VG O
15
10
on SW Nor / Me on W h& or S Hig / /N on Nor Me off SW W gh Hi or S N r/ e/ No &M gh i r/H No
RNF=680 2k
3 5 100 23 5 1k 23 5 10k 2 3 100k ILA00623 5
5
0 0 2 4 6 8 10 12 14 16 18 20
Input frequency, fi -- Hz
60
Supply voltage, VCC -- V
10
ILA00624
VG -- VCC
Output voltage, VO -- V Total harmonic distortion, THD -- %
f=1kHz ALC off VO= --10dBm
VO, THD -- VI
f=1kHz VCC=6.0V RL=10k
TH D
5 3 2 1.0 5 3 2 0.1 5 3 2
50
Voltage gain, VG -- dB
40
30
0dBm
VO
20
10
0.01 5 3 2 --90
0 0 2 4 6 8 10 12 14 16
Me / Nor & Nor / High Speed SW off
--80 --70 --60 --50 --40 --30 --20
Supply voltage, VCC -- V
40
ILA00625 4.0
Input voltage, VI -- dB
ILA00626
CT -- VCC
Maximum output voltage, VO max -- V
Input frequency f=1kHz Rg=3.6k
VO max -- VCC
THD=1% f=1kHz RL=10k
50
Crosstalk, CT -- dB
3.0
60
CH1CH2 CH2CH1
2.0
70
1.0
80
90 2 4 6 8 10 12 14 16 18
0 0 2 4 6 8 10 12 14 16 18 20
Supply voltage, VCC -- V
100
ILA00627 100
Supply voltage, VCC -- V
ILA00628
VO ALC, THD -- VI
Output voltage, VO -- V Total harmonic distortion, THD -- %
Pin 17: ground VCC=4.5V RL=10k Rg=3.6k
VO ALC, THD -- VI
Pin 17: open VCC=4.5V RL=10k Rg=3.6k
Output voltage, VO -- V Total harmonic distortion, THD -- %
5 3 2 10 5 3 2 1.0 5 3 2 0.1
5 3 2 10 5 3 2 1.0 5 3 2 0.1
THD
VO ALC
VO ALC
THD
5 3 2 --60
--50
--40
--30
--20
--10
0
10
20
5 3 2 --60
--50
--40
--30
--20
--10
0
10
20
Input voltage, VI -- dBm
ILA00629
Input voltage, VI -- dBm
ILA00630
No. 2564-10/15
LA3241
VO ALC, THD -- VI
Output voltage, VO -- V Total harmonic distortion, THD -- %
Pin 17: ground Nor / High, Me / Nor on VCC=6V RL=10k Rg=3.6k
100
10 7 5 3 2 1.0 7 5 3 2 0.1 7 5 3
VO ALC, THD -- VI
Pin 17: ground VCC=6V f=1kHz RL=10k Rg=3.6k
Output voltage, VO -- V Total harmonic distortion, THD -- %
5 3 2 10 5 3 2 1.0 5 3 2 0.1
VO ALC
VO ALC
THD
THD
5 3 2 --70
--60
--50
--40
--30
--20
--10
0
10
20
2 --60
--50
--40
--30
--20
--10
0
10
20
Input voltage, VI -- dBm
100
ILA00631 10
Input voltage, VI -- dBm
ILA00632
VO ALC, THD -- VI
Output voltage, VO -- V Total harmonic distortion, THD -- %
Pin 17: open Nor / High, Me / Nor on VCC=6V RL=10k Rg=3.6k
VO ALC, THD -- VI
Pin 17: open VCC=6V f=1kHz RL=10k Rg=3.6k
Output voltage, VO -- V Total harmonic distortion, THD -- %
5 3 2 10 5 3 2 1.0 5 3 2 0.1
7 5 3 2 1.0 7 5 3 2 0.1 7 5 3
VO ALC
VO ALC
THD
THD
5 3 2 --70
--60
--50
--40
--30
--20
--10
0
10
20
2 --60
--50
--40
--30
--20
--10
0
10
20
Input voltage, VI -- dBm
5
ILA00633 5
VO ALC, THD -- VI
Output voltage, VO -- V Total harmonic distortion, THD -- %
Pin 17: ground Nor / High, Me / Nor on VCC=9V RL=10k Rg=3.6k
VO ALC, THD -- VI
Pin 17: open Nor / High, Me / Nor on VCC=9V RL=10k Rg=3.6k
Input voltage, VI -- dBm
ILA00634
Output voltage, VO -- V Total harmonic distortion, THD -- %
3 2 10 5 3 2 1.0 5 3 2 0.1 5
3 2 10 5 3 2 1.0 5 3 2 0.1 5
VO ALC
THD
VO ALC
THD
3 2 --60
--50
--40
--30
--20
--10
0
10
20
3 2 --60
--50
--40
--30
--20
--10
0
10
20
Input voltage, VI -- dBm
5
ILA00635 5
Input voltage, VI -- dBm
ILA00636
VO ALC, THD -- VI
Output voltage, VO -- V Total harmonic distortion, THD -- %
Pin 17: open Nor / High, Me / Nor on VCC=12V RL=10k Rg=3.6k
VO ALC, THD -- VI
Pin 17: ground Nor / High, Me / Nor on VCC=12V RL=10k Rg=3.6k
Output voltage, VO -- V Total harmonic distortion, THD -- %
3 2 10 5 3 2 1.0 5 3 2 0.1 5
3 2 10 5 3 2 1.0 5 3 2 0.1 5
VO ALC
VO ALC
THD
THD
3 2 --60
--50
--40
--30
--20
--10
0
10
20
3 2 --60
--50
--40
--30
--20
--10
0
10
20
Input voltage, VI -- dBm
ILA00637
Input voltage, VI -- dBm
ILA00638
No. 2564-11/15
LA3241
VO ALC -- VCC
ALC output voltage, VOALC -- V
VI= --40dBm VO ALC=0.44V=0dB f=1kHz Rg=3.6k
3
3
VO ALC -- VCC
VI= --40dBm VO ALC=0.66V=0dB f=1kHz Rg=3.6k
ALC output voltage, VOALC -- V
2
2
1
1
0
0
--1
--1
--2
--2
--3 0 2 4 6 8 10 12 14 16
--3 0 2 4 6 8 10 12 14 16
Supply voltage, VCC -- V
10
ILA00639 3
Supply voltage, VCC -- V
ILA00640
VNI -- VCC
Output noise voltage, VNO -- V
Rg=3.6k VG=45dB=177 (VCC=6V) f=1kHz
VNO -- VCC
REC AMP Rg=3.6k RL=10k f=1kHz
V NO(FL AT)
Equivalent input noise voltage, VNI -- V
7 5 3 2
2
1000 7 5
1.0 7 5 3 2 0 2 4 6 8 10 12 14 16 18 20
3 2
VNO(DIN)
100 0 2 4 6 8 10 12 14 16 18 20
Supply voltage, VCC -- V
10000 7 5 3 2 1000 7 5 3 2 100 7 5 3 2 100
ILA00641 10
Supply voltage, VCC -- V
ILA00642
VNO -- Rg
Equivalent input noise voltage, VNI -- V
REC AMP VCC=6V f=1kHz
T) (FLA VNO (DIN VNO )
VNI -- Rg
VCC=6V f=1kHz
7 5 3 2
Output noise voltage, VNO -- V
VNI
1.0 7 5 3 2 100 2 3 5 23 5 2 3 5 23 5
23
5
Input signal source resistance, Rg --
1k
23
5
10k
23
5
100k
23
5
ILA00643 1.4
Input signal source resistance, Rg --
1k
10k
100k
ILA00644
1.4
VO max -- RL
Maximum output voltage, VO max -- V
REC AMP VCC=6V f=1kHz THD=1%
VO max -- VCC
MIC AMP f=1kHz THD=1% RL=10k
Maximum output voltage, VO max -- V
1.2
1.2
1.0
VO max
1.0
VO max
0.8
0.8
0.6
0.6
0.4
0.4
0.2
0.2 0 0
0 23 5 7 100 2 3
Load resistance, RL --
5 7 1k
2
3
5 7 10k 23 ILA00645
2
4
6
8
10
12
14
16
Supply voltage, VCC -- V
ILA00646
No. 2564-12/15
LA3241
VO, THD -- VI
MIC AMP f=1kHz VCC=6V RL=10k
5
32 28
VG -- VCC
MIC AMP f=1kHz RL=10k VO=0dBm
Output voltage, VO -- V Total harmonic distortion, THD -- %
3 2 1.0 7 5 3 2 0.1 7 5 3 2
VG
Voltage gain, VG -- dB
24 20 16 12 8 4 0 0
VO
TH
D
0.01 --60
--50
--40
--30
--20
--10 ILA00647
2
4
6
8
10
12
14
16
Input voltage, VI -- dBm
10
Supply voltage, VCC -- V
1000 7 5 3 2
ILA00648
VNI -- VCC
MIC AMP Rg=2.2k RL=10k
VNO -- VCC
MIC AMP Rg=2.2k RL=10k
Equivalent input noise voltage, VNI -- V
7 5 3 2
Output noise voltage, VNO -- V
VNO(FLAT)
100 7 5 3 2 10 7 5 3 2
VNI(DIN)
1.0 7 5 3 2 2 4 6 8 10 12 14 16 18 20
VNO(DIN)
2
4
6
8
10
12
14
16
18
20
Supply voltage, VCC -- V
1000 7 5 3 2 100 7 5 3 2 10 7 5 3 2 23 5
ILA00649 10
Supply voltage, VCC -- V
ILA00650
VNO -- Rg
Equivalent input noise voltage, VNI -- V
MIC AMP VCC=6V f=1kHz RL=10k
VNI -- Rg
MIC AMP VCC=6V VG=26dB RL=10k
7 5 3 2
Output noise voltage, VNO -- V
T) (FLA VNO
N) (DI V NO
1.0 7 5 3 2 23 5
VNI
Input signal source resistance, Rg --
80
100
23
5
1k
23
5
10k
23
5 100k ILA00651
Input signal source resistance, Rg --
90
100
23
5
1k
23
5
10k
23
5 100k ILA00652
CT -- fi
MIC AMPREC AMP VCC=6V VO=0dBm(MIC OUT) Rg=3.6k
CT -- fi
REC AMP1 MIC AMP REC AMP2
80
70
MIC AMP
Crosstalk, CT -- dB
Crosstalk, CT -- dB
70
60
REC AMP2
C RE AM
REC AMP2
60
50
50
P1
40
40 30 30 23
5
100
23
5
1k
23
5
10k
23
Input frequency, fi -- Hz
100k ILA00653
5
20 23
VCC=6V VO1=0dBm Rg=3.6k *ALC off
5 100 23 5 1k 23 5 10k 23
Input frequency, fi -- Hz
5 100k ILA00654
No. 2564-13/15
LA3241
CT -- fi
REC AMP1 MIC AMP REC AMP2
90
90
CT -- fi
REC AMP1 MIC AMP REC AMP2
80
80
MIC AMP
MIC AMP
Crosstalk, CT -- dB
Crosstalk, CT -- dB
70
70
Me / Nor on, Nor / High on REC AMP2
60
Me / Nor on, Nor / High on REC AMP2
60
Me / Nor off, Nor / High off REC AMP2
50
Me / Nor off, Nor / High off REC AMP2
50
40
30 23 5 100 23 5 1k 23 5
VCC=6V VI= --40dBm (REC AMP1) Rg=3.6k *ALC on (0.42V 17short)
40
30 23 5 100 23 5 1k 23 5
VCC=6V VI= --40dBm (REC AMP1) Rg=3.6k *ALC on (0.65V 17open)
10k 23
Input frequency, fi -- Hz
10k
23
100k ILA00655 90
5
Input frequency, fi -- Hz
5 100k ILA00656
90
CT -- fi
MIC AMP REC AMP2 REC AMP1
CT -- fi
REC AMP2 MIC AMP REC AMP
80
80
MIC AMP
MIC AMP
Crosstalk, CT -- dB
70
Crosstalk, CT -- dB
70
REC AMP1
60
Me / Nor on, Nor / High on REC AMP1
60
Me / Nor off, Nor / High off REC AMP1
VCC=6V VI= --40dBm (REC AMP2) Rg=3.6k *ALC on (0.42V 17short)
5 100 23 5 1k 23 5 10k 23
50
50
40
30 23 5 100 23 5 1k 23 5 10k
VCC=6V VO=0dBm Rg=3.6k *ALC off
23
40
30 23
Input frequency, fi -- Hz
90
100k ILA00657
5
CT -- fi
Input frequency, fi -- Hz
--10
5 100k ILA00658
Rr -- VCC
MIC AMP REC AMP2 REC AMP1
Ripple rejection ratio, Rr -- dB
80
MIC AMP
--20
VR= --20dBm f=100Hz CR ???
Crosstalk, CT -- dB
70
Me / Nor on, Nor / High on REC AMP1
60
--30
Me / Nor off, Nor / High off REC AMP1
VCC=6V VI= --40dBm (REC AMP2) Rg=3.6k *ALC on (0.65V 17open)
2 3 5 100 23 5 1k 23 5 10k 23
REC AMP
--40
50
40
MIC AMP
--50
30 20
Input frequency, fi -- Hz
20 10
100k ILA00659
5
--60 2
4
6
8
10
12
14
16
18
Supply voltage, VCC -- V
--10
ILA00660
Rr -- fr
Ripple rejection ratio, Rr -- dB
VCC=6V VR= --20dBm No CR
Rr -- Cr
VCC=6V fr=100Hz VR= --20dBm
Ripple rejection ratio, Rr -- dB
--20
0 --10 --20 --30
--30
REC
--40
REC AMP
--40 --50 --60 2
MIC
--50
MIC AMP
3
5
100
23
5
1k
23
5
10k
23
Ripple frequency, fr -- Hz
100k ILA00661
5
--60 1.0
2
3
5
10
2
3
5
100
2
3
Ripple filter capacitor, Cr -- F
5 1000 ILA00662
No. 2564-14/15
LA3241
Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products (including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of February, 2002. Specifications and information herein are subject to change without notice. PS No. 2564-15/15

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