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ICs for Video Camera
AN2108NFHQ
AN2108NFHQ
Camera Signal Processing(CDS + AGC + Gamma)
s Overview
The AN2108NFHQ is a single-chip IC that processes video-signal of CCD-camera and has functions of CDS, AGC, pre-knee and pre-aperture circuits. This CDS circuit is capable of high speed sampling of max. 30 MHz to support high-resolution CCD-camera systems (XGA, SXGA, etc.). AGC and OB level(black level) adjustments can be controlled with on-chip 8-bit DAC.
9.000.40 7.000.20 36 37 25 24
Unit : mm
48 1 12 0.20-0.05
+0.10
13
s Features
* Capable of high speed sampling of max. 30 MHz * Capable of controlling OB level at the last output stage * Capable of switching between 2 modes of pre-knee characteristic * On-chip DAC(8-it, 15-channel)for adjustment (11-channels for internal and external outputs)
(0.75)
0.50
(0.625) 1.400.10 1.70 max.
(0.75) 7.000.20 9.000.40
0.15-0.05
+0.10
(1.00)
SEATING PLANE
(0.625) 0.100.10
0 to 10 0.500.20 ( ) : Reference value
LQFP048-P-0707
s Applications
* Digital still cameras, Camcorders, PC cameras, Monitoring cameras, CCD camera modules, CCD digital camera systems
1
AN2108NFHQ
ICs for Video Camera
s Block Diagram
Mode SW PBLK In
VCC1
36 DS2
29
34
33
35
30
ch.5
28
DS1 37 9 dB GND1 38 CCD Out In 39 40 41 42 VCC3 43 DAC ch.6 Out 44 BIAS VREFMH 2.75V 560 ch.2 GC DL S/H S/H Knee Con. 3dB
ch.5
Test
P.Sepa. 24 CPOB In ch.5 GC ch.1 DC Cont. 23 GND2 22 21 20 19 GC ch.3 DC Cont. 18 17 16
VREFM 1.8V
25 V CC2 A/D Out OB Control DAC ch.4 Out DAC ch.13 Out DAC ch.14 Out 15 14 13 DAC ch.15 Out 12
32
31
27 10 DAC ch.10 Out DAC ch.12 Out
GND3 45 DAC ch.7 Out 46 47 VREFH 3.0V VREFB 1.0V DAC ch.1 Out 1 (UN-Buffer) LOAD 6 SCLK DI DAC ch.8 Out DAC ch.9 Out DAC ch.11 Out 11 2 3 4 5 7 8 9 Serial Control 15-ch DAC
VDD
48
2
26
ICs for Video Camera
s Pin Descriptions
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Description DAC CH1 OUT(UN-Buffer) VDD OUT(3.5 V) VSS DI SCLK LOAD DAC ch.8 OUT DAC ch.9 OUT DAC ch.12 OUT DAC ch.10 OUT DAC ch.11 OUT DAC ch.15 OUT DAC ch.14 OUT DAC ch.13 OUT DAC ch.4 OUT OB Control A/D OUT Sub Amp. DET Sub Amp. IN Pre-aperture OUT VREFM OUT(1.8 V) Gamma IN GND 2 CPOB IN Pin No. 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 VCC2 AGC OUT 1 AGC OUT 2 PBLK IN AGC DET AGC IN Trap OUT Gamma MODE SW AGC REF OUT CDS OUT VCC2
AN2108NFHQ
Description
Sampling Puls DS2 IN Sampling Puls DS1 IN GND 1 CCD OUT IN VREFMH OUT(2.7 V) Gamma OUT Pre-aperture DL IN VCC3 DAC ch.6 OUT GND 3 DAC ch.7 OUT VREFH OUT(3.0 V) VREFB OUT(1.0 V)
3
AN2108NFHQ
s Absolute Maximum Ratings
Parameter Supply voltage Supply current Power dissipation
*2 *1
ICs for Video Camera
Symbol VCC ICC PD Topr Tstg
Rating 5.5 226 -20 to +7.5 -55 to +125
Unit V mA mW C C
Operating ambient temperature Storage temperature
*1
Note) *1 : Ta = 25 C, except storage temperature and operating ambient temperature. *2 : The above power dissipation shows the package power dissipation at Ta = 75 C, in free-air.
s Recommended Operating Range
Parameter Supply voltage Symbol VCC Range 4.5 to 5.1 Unit V
s Electrical Caracteristics at VCC = 4.8 V, Ta = 25 2 C
Parameter Circuit current Reference voltage 1 Reference voltage 2 Reference voltage 3 Reference voltage 4 Reference voltage 5 Pulse separation Sampling pulse threshold 1 Sampling pulse threshold 2 AGC frequency characteristic AGC level adjustment AGC output D-range AGC min. gain AGC max. gain Test signal adjustment Gamma frequency characteristic Gamma characteristic 1 Gamma characteristic 2 Gamma characteristic 3 Symbol ITOT VREF1 VREF2 VREF3 VREF4 VREF5 CPOB VTH1 VTH2 GFA VADJ1 VAG3 GAG4 GAG5 VTE GFG VGM1 VGM2 VGM VCC = 4.8 V VCC = 4.8 V VCC = 4.8 V VCC = 4.8 V VCC = 4.8 V VCC = 4.8 V VCC = 4.8 V VCC = 4.8 V VCC = 4.8 V 10 MHz Sine wave 300 mVPP 10 stair step 300 mVPP 10 stair step 1.2 VPP 10 stair step 1.2 VPP 10 stair step 50 mVPP PBLK input 10 MHz Sine wave 300 mVPP 10 stair step 600 mVPP 3rd stage Pin32 = GND 10 stair step 600 mVPP 9th stage Pin32 = GND Conditions Min 30 3.3 2.9 2.65 1.7 0.9 1.1 1.15 1.15 -1.8 46 1080 21 C0 -2.2 162 Typ 40 3.6 3.0 2.75 1.8 1.0 1.4 1.45 1.45 - 0.4 60 1200 -3 24 CE -1.0 180 0 80 Max 50 3.9 3.1 2.85 1.9 1.1 1.7 1.75 1.75 1.0 7A 1320 -5 DF 0.2 198 1.0 130 Unit mA V V V V V V V V dB Hex mVPP dB dB Hex dB mVPP dB mVPP
10 stair step 600 mVPP 6th stage Pin32 = GND -1.0 30
4
ICs for Video Camera
s Electrical Caracteristics at VCC = 4.8 V, Ta = 25 2 C(Continned)
Parameter Gamma characteristic 4 Gamma characteristic 5 Pre-aperture frequency characteristic Pre-aperture output D-range Pre-aperture gain 1 Pre-aperture gain 2 Output amplifier frequency characteristic Output amplifier level adjustment Output amplifier output D-range Output amplifier gain 1 Output amplifier gain 2 Output amplifier gain 3 A/D Out output DC 1 A/D Out output DC 2 Total frequency characteristic 9 dB amplifier gain Symbol VGM4 VGM6 GFG VPR3 VPR5 VPR4 GFB VADJ2 VAD5 GAD1 GAD2 GAD4 VOFF1 VOFF2 GFT G1 Conditions 10 stair step 720 mVPP Pin32 = GND 10 stair step 600 mVPP 9th stage Pin32 = GND 10 MHz Sine wave 300 mVPP 10 stair step 800 mVPP 9 MHz Sine wave 300 mVPP 9 MHz Sine wave 300 mVPP 10 MHz Sine wave 300 mVPP 10 stair step 300 mVPP 10 stair step 1000 mVPP 10 stair step 300 mVPP 10 stair step 300 mVPP 10 stair step 600 mVPP Pin16 = 1.0 V Pin16 = 1.4 V Min 1.22 10 -1.6 700 5.0 -1.6 7B 2200 13.5 -1.0 -70 -70 -3.5 Sampling pulse 10 MHz CDS input 300 mVPP 7.6
AN2108NFHQ
Typ 2.02 30 - 0.4 800 - 0.2 7.0 - 0.4 90 2450 2.5 15.5 0 0 0 -2.0 8.6
Max 3.82 50 0.8 900 0.5 0.8 A5 2700 4.0 1.0 70 70 -0.5 9.6
Unit dB mVPP dB mVPP dB dB dB Hex mVPP dB dB dB mV mV dB dB
5
6 Function AGC gain control Pre-aperture gain control Sub amp. gain control Output DC control D7 AGC output pin signal switching * * * * * * * * 1 1 1 1 1 1 1 1 1 0 CH14 CH15 * * * * CH13 * * * * CH12 * * * * CH11 * * * * CH10 * * * * CH9 * * * * CH8 * * * * CH7 * * * * CH6 D6 D5 Pre-apa. On/Off Output DC control Output DC control Output DC control Output DC control Output DC control Output DC control Output DC control Output DC control Output DC control Output DC control D4 D0 Test signal amplitude control 0 0 0 0 * * * * * * CH5 * * * * CH4 0 0 1 1 CH3 0 0 1 0 CH2 0 0 0 1 CH1 0 0 0 0 Don t Care
AN2108NFHQ
* DAC serial Data Format
D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Address Selection
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
1
0
0
0
0
0
1
1
0
0
0
0
0
s Electrical Caracteristics(Continned)
0
0
1
0
*
*
*
1
0
1
0
*
*
*
0
1
1
0
*
*
*
1
1
1
0
*
*
*
0
0
0
1
*
*
*
1
0
0
1
*
*
*
0
1
0
1
*
*
*
1
1
0
1
*
*
*
0
0
1
1
*
*
*
1
0
1
1
*
*
*
0
1
1
1
1
1
1
ICs for Video Camera
1
1
1
1
1
1
1
ICs for Video Camera
s Electrical Caracteristics(Continned)
DAC serial data timing
CLK
AN2108NFHQ
Data in
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
LD
ch.5 AGC output pin signal switching D7 0 1 1 D6 0 0 1 Function CDS signal output at AGC on Test signal output at AGC on Through output of test signal at AGC off
Pre-apa. on/off D5 0 1 Function Pre-aperture off Pre-aperture on
s Terminal Equivalent Circuit
Pin No. 1 Symbol CH1 21
53.04 k 30 k 30 k
Equivalent Circuit
Function 0.6 to 2.9 V
30 k 60 k 60 k 60 k
1.7 k
1 2 3 4 VDD VSS DI 3.5 V
4
D CK
D CK
5
5
SCLK
4
5
7
AN2108NFHQ
s Terminal Equivalent Circuit(Continued)
Pin No. 6 Symbol LOAD Equivalent Circuit
ICs for Video Camera
Function
6
7
CH8
200
0.15 to 3.60 V
7 40 k
8
CH9
200
0.15 to 3.60 V
8 40 k
9
CH12
200
0.15 to 3.60 V
9 40 k
10
CH10
200
0.15 to 3.60 V
10 40 k
8
ICs for Video Camera
s Terminal Equivalent Circuit(Continued)
Pin No. 11 Symbol CH10
200
AN2108NFHQ
Equivalent Circuit
Function 0.15 to 3.60 V
11 40 k
12
CH15
200
0 to 3.6 V
12 17k 40k
13
CH14
200
0 to 3.6 V
13 17k 40k
14
CH13
200
0.15 to 3.60 V
14 40 k
15
CH4
200
0.15 to 3.60 V
15 40 k
9
AN2108NFHQ
s Terminal Equivalent Circuit(Continued)
Pin No. 16 Symbol OB CONT Equivalent Circuit
36 A 18
ICs for Video Camera
Function
15A 1.7 k 1 k 16
17
A/D OUT
190 24k 190 1k
1.0 to 1.4 V
17
6k
190
190
18
SUB DET
36 A
18
180 A 1.7 k
15 A 1 k 16
21
19
SUB AMP IN
1 k 19
50 A
20
PREAPA OUT
3 k 190
1.9 V
20
190
10
ICs for Video Camera
s Terminal Equivalent Circuit(Continued)
Pin No. 21 22 Symbol VREFM GAMMA IN
1 k 22
AN2108NFHQ
Equivalent Circuit
Function 1.8 V
30 A
23 24
GND2 CPOB IN
19 A

70 k
24 14 k 1.7 k 38.5 k 26 A
25 26
VCC2 AGC OUT1
4.8 V 1.8 V
22.95 k
190
26 27 10.5 k 190
27
AGC OUT2
22.95 k 190
1.8 V
26 27 10.5 k 190
11
AN2108NFHQ
s Terminal Equivalent Circuit(Continued)
Pin No. 28 Symbol PBLK IN
50 A 6.8 k
ICs for Video Camera
Equivalent Circuit
Function
30 k 28
29
AGC DET
36 A 29
1.7 k
15 A 1 k 21
30
AGC IN
120 A
30 37 A
31
TRAP OUT
2.0 V
10 k 1 k
31
12
ICs for Video Camera
s Terminal Equivalent Circuit(Continued)
Pin No. 32 Symbol MODE SW Equivalent Circuit
AN2108NFHQ
Function
32 108 k
33
AGC REF
100
1.2 V
33
200 A
100
34
CDS OUT
100
1.2 V
34
200 A
100
35 36
VCC1 DS2

92 A 20 k
200 A
36 5 k 210 A 15 k 190
13
AN2108NFHQ
s Terminal Equivalent Circuit(Continued)
Pin No. 37 Symbol DS1
92 A 20 k
ICs for Video Camera
Equivalent Circuit
Function
200 A
37 5 k 210 A 15 k 190
38 39
GND1 CCD IN

73 A
200
39
40 41
VREFMH PREAPA OUT
2.75 V 1.9 V
190
560
190 41
14
ICs for Video Camera
s Terminal Equivalent Circuit(Continued)
Pin No. 42 Symbol DL IN Equivalent Circuit
AN2108NFHQ
Function
1 k 42
43 44
VCC3 CH6
4.8 V 0.15 to 3.60 V
200
44 40 k
45 46
GND2 CH7
0.15 to 3.60 V
200
46 40 k
47 48
VREFH VREFB

3.0 V 1.0 V
15
AN2108NFHQ
s Application Circuit Example(CCD Camera)
AN2108NFHQ
ICs for Video Camera
C C D
CDS
AGC
Preknee
Output amp.
A/D
Digital processor
DAC for adjustment
Clock Pulse
Serial Data
Load Pulse
s Usage Notes
* Supply power to Pins 25,35 and 43 simultaneously.
16

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