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19-2001; Rev 0; 6/96
KIT ATION EVALU LE VAILAB A
1-Input/4-Output Video Distribution Amplifiers
_______________General Description
The MAX4137/MAX4138 are 1-input/4-output voltagefeedback amplifiers that combine high speed with fast switching for video distribution applications. The MAX4137 is internally set for a closed-loop gain of 2V/V, while the MAX4138 can be externally set for gains of 2V/V or greater. The MAX4137 achieves a -3dB bandwidth of 185MHz, with 0.1dB gain flatness to 40MHz. The MAX4138's -3dB bandwidth is 140MHz, with 0.1dB gain flatness to 40MHz. Both devices deliver a 1000V/s slew rate, as well as exceptional full-power bandwidths of 185MHz and 140MHz, respectively. A 25ns channel switching time enables rapid multiplexing for picture-in-picture applications, yet maintains a high off-isolation of 75dB and all-hostile crosstalk of -50dB (f = 30MHz). The MAX4137/MAX4138's on-board logic selects any combination of the four signal outputs. Each output is capable of swinging 2V and delivering up to 65mA of current. For applications that require a 1-input/6-output distribution amplifier, see the MAX4135/MAX4136 data sheet.
____________________________Features
o Fixed Gain of 2V/V (MAX4137) External Gain Set (MAX4138) o High Speed: 185MHz -3dB Bandwidth (MAX4137) 140MHz -3dB Bandwidth (MAX4138) 1000V/s Slew Rate o High Full-Power Bandwidths (VOUT = 2Vp-p): 185MHz (MAX4137) 140MHz (MAX4138) o 0.1dB Gain Flatness to 40MHz o Low Differential Gain/Phase Error: 0.10%/0.02 o High-Impedance Output Disable
MAX4137/MAX4138
______________Ordering Information
PART MAX4137EWG MAX4138EWG TEMP. RANGE -40C to +85C -40C to +85C PIN-PACKAGE 24 Wide SO 24 Wide SO
_____________________Selector Guide
PART MAX4135 MAX4136 MAX4137 MAX4138 No. OF OUTPUTS 6 6 4 4 GAIN (V/V) Fixed 2 2 Fixed 2 2 -3dB BANDWIDTH (MHz) 185 140 185 140
_________________Pin Configurations
TOP VIEW
N.C. 1 VCCO 2 24 N.C. 23 SEL1 22 SEL2 21 AGND
________________________Applications
Video Switching and Distribution High-Resolution RGB CRT Monitors High-Speed Analog Bus Drivers RF Signal Processing Composite Video Preamplifiers
OUT1 3 AGND 4 OUT2 5 VEEO 6 VEEO 7 OUT3 8 AGND 9 OUT4 10 VCCO 11 N.C. 12
MAX4137 MAX4138
20 IN+ 19 VEEI 18 AGND (RG) 17 N.C. (RF) 16 VCCI 15 SEL3 14 SEL4 13 N.C.
SO
( ) ARE FOR MAX4138.
________________________________________________________________ Maxim Integrated Products
1
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1-Input/4-Output Video Distribution Amplifiers MAX4137/MAX4138
ABSOLUTE MAXIMUM RATINGS
Power-Supply Voltage (VCC to VEE).......................................12V Voltage on Any Input Pin to GND .......(VCC + 0.3V) to (VEE - 0.3V) Short-Circuit Duration to GND....................................Continuous Continuous Power Dissipation (TA = +70C) Wide SO (derate 19.3mW/C above +70C)..................1.54W Operating Temperature Range MAX4137EWG/MAX4138EWG ........................-40C to +85C Storage Temperature Range .............................-65C to +160C Lead Temperature (soldering, 10sec) .............................+300C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(VCC = +5V, VEE = -5V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER Input Offset Voltage Input Offset Voltage Match Between Channels Input Offset Voltage Drift Input Bias Current Common-Mode Input Resistance Common-Mode Input Capacitance Input Voltage Noise Input Current Noise Input Capacitance Common-Mode Input Voltage Range Common-Mode Rejection Ratio Power-Supply Rejection Ratio Quiescent Supply Current Output Voltage Swing Output Current Drive SEL High Threshold SEL Low Threshold SEL Input Current TCVOS IB RIN(CM) CIN(CM) en in CIN VCM CMRR PSRR ISY VOUT IOUT VIH VIL ISEL 0.8 1 5 VCM = 2.5V VS = 4.75V to 5.25V VIN = 0V RL = 150 RL = 30 All channels off All channels on Positive Negative 2.2 -2.0 45 55 SYMBOL VOS CONDITIONS VOUT = 0V, RL = 150 VOUT = 0V, RL = 150 VOUT = 0V, RL = VOUT = 0V, RL = , VIN = -VOS MAX4138, either input MAX4138, either input f = 1MHz f = 1MHz to 100MHz f = 1MHz f = 1MHz to 100MHz MIN TYP 1 1 30 4.5 5 2 7 88 2.4 30 2 2.5 60 65 30 47 2.6 -2.5 65 2.0 40 60 10 MAX 8.0 6 UNITS mV mV V/C A M pF nV/Hz VRMS pA/Hz nARMS pF V dB dB mA V mA V V A
2
_______________________________________________________________________________________
1-Input/4-Output Video Distribution Amplifiers
AC ELECTRICAL CHARACTERISTICS
(VCC = +5V, VEE = -5V, AVCL = 2V/V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = 25C.) PARAMETER -3dB Bandwidth Full-Power Bandwidth 0.1dB Bandwidth Slew Rate Settling Time Differential Gain Differential Phase All-Hostile Crosstalk Off Isolation Channel Switching Off Time Channel Switching On Time Digital Switching Feedthrough Spurious-Free Dynamic Range Output On-Resistance Output Off-Resistance Output On-Capacitance Output Off-Capacitance SFDR ROUT ROUT COUT(ON) COUT(OFF) tOFF tON VIN = 0VDC fC = 5MHz, AVCL = 2V/V, VOUT = 2Vp-p, RL = 100 f = DC, AVCL = 2V/V f = DC, AVCL = 2V/V SR ts DG DP SYMBOL BW-3dB FPBW CONDITIONS VOUT 0.1VRMS, AVCL = 2V/V VOUT = 2Vp-p, AVCL = 2V/V AVCL = 2V/V -2V VOUT +2V -1V VOUT +1V, RL =150, AVCL =2V/V f = 3.58MHz, AVCL = 2V/V f = 3.58MHz, AVCL = 2V/V VIN = 1Vp-p, f = 30MHz VIN = 1Vp-p, f = 30MHz to 0.1% to 0.01% MAX4137 MAX4138 MAX4137 MAX4138 MAX4137 MAX4138 MAX4137 MAX4138 MIN TYP 185 140 185 140 40 1000 17 40 0.10 0.10 0.02 0.02 -50 75 25 25 1 -72 1 200 2 3.5 MAX UNITS MHz MHz MHz V/s ns % degrees dB dB ns ns mV dBc k pF pF
MAX4137/MAX4138
_______________________________________________________________________________________
3
1-Input/4-Output Video Distribution Amplifiers MAX4137/MAX4138
__________________________________________Typical Operating Characteristics
(VCC = +5V, VEE = -5V, RL = 150, TA = +25C, unless otherwise noted.)
MAX4137 SMALL-SIGNAL GAIN vs. FREQUENCY (AVCL = +2)
MAX4137/8 TOC-01
MAX4138 SMALL-SIGNAL GAIN vs. FREQUENCY (AVCL = +2)
MAX4137/8 TOC-02
MAX4138 SMALL-SIGNAL GAIN vs. FREQUENCY (AVCL = +10)
10 9 8 GAIN (dB) 7 6 5 4 3 2 1
MAX4137/8 TOC-03
10 9 8 7 GAIN (dB) 6 5 4 3 2 1 0 100k 1M 10M 100M
11 10 9 8 GAIN (dB) 7 6 5 4 3 2 1
11
1G
100k
1M
10M
100M
1G
100k
1M
10M
100M
1G
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
MAX4137 LARGE-SIGNAL GAIN vs. FREQUENCY (AVCL = +2)
MAX4137/8 TOC-04
MAX4138 LARGE-SIGNAL GAIN vs. FREQUENCY (AVCL = +2)
MAX4137/8 TOC-05
OFF-ISOLATION vs. FREQUENCY
-25 -35 -45 GAIN (dB) -55 -65 -75 -85 -95 -105 -115
MAX4137/8 TOC-06
11 10 9 8 GAIN (dB) 7 6 5 4 3 2 1
VOUT = 2Vp-p
11 10 9 8 GAIN (dB) 7 6 5 4 3 2 1
VOUT = 2Vp-p
-15
100k
1M
10M
100M
1G
100k
1M
10M
100M
1G
100k
1M
10M
100M
1G
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
ALL-HOSTILE CROSSTALK vs. FREQUENCY
MAX4137/8 TOC-7
CLOSED-LOOP OUTPUT IMPEDANCE vs. FREQUENCY
MAX4137-08
INPUT VOLTAGE NOISE vs. FREQUENCY
MAX4137-8
-10 -20 ALL-HOSTILE CROSSTALK (dB) -30 -40 -50 -60 -70 -80 -90 -100 -110 100k 1M 10M 100M FREQUENCY (Hz)
800 250 80 IMPEDANCE () 25 8.0 2.5 0.8 0.25 0.08 100k 1M 10M 100M FREQUENCY (Hz)
100
NOISE (nV/Hz)
10
1 1 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz)
4
_______________________________________________________________________________________
1-Input/4-Output Video Distribution Amplifiers
____________________________Typical Operating Characteristics (continued)
(VCC = +5V, VEE = -5V, RL = 150, TA = +25C, unless otherwise noted.)
MAX4137/MAX4138
MAX4137 LARGE-SIGNAL PULSE RESPONSE (AVCL = +2)
MAX4137-10
MAX4138 LARGE-SIGNAL PULSE RESPONSE (AVCL = +2)
MAX4137-11
IN VOLTAGE (500mV/div)
GND VOLTAGE (500mV/div)
IN
GND
OUT
GND
OUT
GND
TIME (10ns/div)
TIME (10ns/div)
MAX4137 SMALL-SIGNAL PULSE RESPONSE (AVCL = +2)
MAX4137-12
MAX4138 SMALL-SIGNAL PULSE RESPONSE (AVCL = +2)
MAX4137-13
IN VOLTAGE (50mV/div)
GND VOLTAGE (50mV/div)
IN
GND
OUT
GND
OUT
GND
TIME (10ns/div)
TIME (10ns/div)
DIGITAL FEEDTHROUGH
MAX4137-14
SEL (1V/div)
OUT (45mV/div)
TIME (20ns/div)
_______________________________________________________________________________________
5
1-Input/4-Output Video Distribution Amplifiers MAX4137/MAX4138
____________________________Typical Operating Characteristics (continued)
(VCC = +5V, VEE = -5V, RL = 150, TA = +25C, unless otherwise noted.)
MAX4137 HARMONIC DISTORTION vs. FREQUENCY (VO = 2Vp-p, RL = 100)
MAX4137/8 TOC-15
MAX4138 HARMONIC DISTORTION vs. FREQUENCY (G = +2, VO = 2Vp-p, RL = 100)
MAX4137/8 TOC-16
DIFFERENTIAL GAIN AND PHASE
GAIN (%) -0.00 -0.05 -0.10 AVCL = 2V/V RL = 150 -0.15 0 IRE 0.01
MAX4137/8 TOC-17
0 -10 HARMONIC DISTORTION (dBc) -20 -30 -40 -50 -60 -70 -80 -90 -100 100k 1M 10M 3RD HARMONIC 2ND HARMONIC
0 -10 HARMONIC DISTORTION (dBc) -20 -30 -40 -50 -60 -70 -80 -90 -100 2ND HARMONIC 3RD HARMONIC
0.05
100
PHASE (deg)
0.00 -0.01 -0.02 AVCL = 2V/V R = 150 -0.03 L 0 IRE
100M
100K
1M
10M
100M
100
FREQUENCY (Hz)
FREQUENCY (Hz)
MAX4137 OUTPUT SWING vs. LOAD RESISTANCE
MAX4137/8 TOC-19
INPUT OFFSET VOLTAGE vs. TEMPERATURE
MAX4137/8 TOC-20
POWER SUPPLY CURRENT vs. TEMPERATURE
53 52 CURRENT (mA) 51 50 49 48 47 46
MAX4137/8 TOC-21
5.5 5.0 OUTPUT SWING (Vp-p) 4.5 4.0 3.5 3.0 2.5 2.0 25 50 75 100 125
2 1 0 -1 -2 -3 -4 -5
54
VOLTAGE (mV)
45 44 -75 -50 -25 0 25 50 75 100 125 150 -75 -50 -25 0 25 50 75 100 125 150 TEMPERATURE (C) TEMPERATURE (C)
150
LOAD RESISTANCE ()
INPUT BIAS CURRENT vs. TEMPERATURE
MAX4137/8-TOC-22
POSITIVE OUTPUT VOLTAGE SWING vs. TEMPERATURE
MAX4137/8 TOC-23
NEGATIVE OUTPUT VOLTAGE SWING vs. TEMPERATURE
-2.4 -2.5 VOLTAGE (V) -2.6 -2.7 -2.8 -2.9 -3.0
MAX4137/8 TOC-24
8 7 6 CURRENT (A) 5 4 3 2 1 -75 -50 -25 0 25 50
3.0 2.9 2.8 VOLTAGE (V) 2.7 2.6 2.5 2.4 2.3
-2.3
75 100 125 150
-75 -50 -25
0
25
50
75 100 125 150
-75 -50 -25
0
25
50
75 100 125 150
TEMPERATURE (C)
TEMPERATURE (C)
TEMPERATURE (C)
6
_______________________________________________________________________________________
1-Input/4-Output Video Distribution Amplifiers
______________________________________________________________Pin Description
PIN MAX4137 1, 12, 13, 17, 24 2, 11 3 4, 9, 18, 21 5 6, 7 8 10 14 15 16
--
MAX4137/MAX4138
MAX4138 1, 12, 13, 24 2, 11 3 4, 9, 21 5 6, 7 8 10 14 15 16 17 18 19 20 22 23
NAME N.C. VCCO OUT1 AGND OUT2 VEEO OUT3 OUT4 SEL4 SEL3 VCCI RF RG VEEI IN+ SEL2 SEL1
FUNCTION No Connect. Not internally connected. Positive Supply for Output Amplifiers. Connect to +5V. Output 1 Analog Ground Output 2 Negative Supply for Output Amplifiers. Connect to -5V. Output 3 Output 4 When low, enables output channel OUT4. When high, disables output channel OUT4. When low, enables output channel OUT3. When high, disables output channel OUT3. Positive Supply for Input Amplifier. Connect to +5V. Output of Input Amplifier Inverting Input Negative Supply for Input Amplifier. Connect to -5V. Noninverting Input When low, enables output channel OUT2. When high, disables output channel OUT2. When low, enables output channel OUT1. When high, disables output channel OUT1.
-- 19 20 22 23
_______________Detailed Description
The MAX4137/MAX4138 are 1-input/4-output video distribution amplifiers. The MAX4137 is configured for a fixed gain of +2, while the MAX4138 features external gain control (feedback) for closed-loop gains of 2V/V or greater. Each output provides sufficient current to drive five 150 loads. However, distortion will increase when driving multiple loads. The TTL/CMOS-compatible digital control (SEL_ ) enables or disables each output amplifier. When the SEL_ control input is low, the amplifier is enabled; when it is high, the amplifier is disabled and presents a high-impedance output. The enable/disable or
disable/enable time is under 25ns, which is useful in multiplexing, pixel switching, or picture-in-picture applications. Each device has an input amplifier, which buffers the input from any switching glitches that may be taking place at the output stage, and provides a highimpedance, low-capacitance input. The separate input buffer allows a true high output impedance when an amplifier is disabled. The outputs are protected against short circuits to ground. However, power-dissipation limits preclude shorting all output channels to ground. See the PowerDissipation Considerations section for details.
_______________________________________________________________________________________
7
1-Input/4-Output Video Distribution Amplifiers MAX4137/MAX4138
N.C. 1 +5VDC 0.1F VCCO 2
MAX4137
N.C. 24 SW1 SEL1 23 SEL2 22 AGND 21
75*
OUT1 3 GND 4
OUT1
SW2
75*
OUT2 5 VEEO 6 VEEO 7 OUT3 8 GND 9 OUT4 10 VCCO 11 N.C. 12
OUT2 IN
IN+ 20
VIDEO IN 75
-5VDC
RF
RG
0.1F 75*
VEEI 19 AGND 18 N.C. 17 VCCI 16 SEL3 15 SEL4 14 N.C. 13
-5VDC 0.1F
OUT3
+5VDC 0.1F
75*
OUT4 SW3 SW4
+5VDC
0.1F 75*
* TO TERMINATE TRANSMISSION LINE
Figure 1. MAX4137 Typical Operating Circuit
__________Applications Information
Grounding, Bypassing, and PC Board Layout
To obtain the MAX4137/MAX4138's full 185MHz bandwidth, Microstrip and Stripline techniques are recommended in most cases. To ensure the PC board does not degrade the amplifier's performance, design the board for a frequency greater than 1GHz. Even with very short traces, use these techniques at critical points, such as inputs and outputs. Whether you use a constant-impedance board or not, observe the following guidelines when designing the board:
* Do not use wire-wrap boards. They are too inductive. * Do not use IC sockets. They increase parasitic capacitance and inductance. * In general, surface-mount components have shorter leads and lower parasitic reactance, giving better high-frequency performance than through-hole components. * The PC board should have at least two layers, with one side a signal layer and the other a ground plane. * Keep signal lines as short and straight as possible. Do not make 90 turns; round all corners. * The ground plane should be as free from voids as possible.
8
_______________________________________________________________________________________
1-Input/4-Output Video Distribution Amplifiers MAX4137/MAX4138
N.C. 1 +5VDC 0.1F VCCO 2
MAX4138
SW1
N.C. 24 SEL1 23 SEL2 22 AGND 21
75*
OUT1 3 AGND 4
OUT1
SW2
75*
OUT2 5 VEEO 6 VEEO 7 OUT3 8 AGND 9 OUT4 10 VCCO 11 N.C. 12
OUT2 IN
IN+ 20
VIDEO IN
75* VEEI 19 RG 18 RF 17 VCCI 16 OUT4 SW3 SEL3 15 SEL4 14 N.C. 13 -5VDC
-5VDC 0.1F 75*
0.1F RG
OUT3
RF
75*
0.1F
+5VDC
+5VDC
0.1F
SW4
* TO TERMINATE TRANSMISSION LINE
Figure 2. MAX4138 Typical Operating Circuit
Driving Capacitive Loads
The MAX4137/MAX4138 provide maximum AC performance with no output load capacitance. This is the case when they are driving a correctly terminated transmission line (i.e., a back-terminated 75 cable). However, the MAX4137/MAX4138 are capable of driving capacitive loads up to 10pF without oscillations, but with reduced AC performance. Driving large capacitive loads increases the chance of oscillations in most amplifier circuits. This is especially true for circuits with high loop gain, such as voltage followers. The amplifier's output resistance and the load capacitor combine to add a pole and excess phase to
the loop response. If the frequency of this pole is low enough and phase margin is degraded sufficiently, oscillations may occur. A second problem when driving capacitive loads results from the amplifier's output impedance, which looks inductive at high frequencies. This inductance forms an L-C resonant circuit with the capacitive load, which causes peaking in the frequency response and degrades the amplifier's gain margin. The MAX4137/MAX4138 drive capacitive loads up to 10pF without oscillation. However, some peaking (in the frequency domain) or ringing (in the time domain) may occur (Figure 3).
_______________________________________________________________________________________
9
1-Input/4-Output Video Distribution Amplifiers MAX4137/MAX4138
14 12 CLOSED-LOOP GAIN (dB) 10 8 6 4 2 0 0.1M 1M 10M 100M 1G FREQUENCY (Hz) RISO CL = 15pF CL = 10pF CL = 5pF VOUT VIN CL RL
MAX4137 MAX4138
Figure 3. Effect of CLOAD on Frequency Response (without RISO)
Figure 4. Capacitive-Load Driving Circuit
RISOLATION ()
To drive larger-capacitance loads or to reduce ringing, add an isolation resistor between the amplifier's output and the load, as shown in Figure 4. The value of RISO depends on the circuit's gain and the capacitive load. Figure 5 shows the optional isolation resistor (RISO) vs. capacitive load (CL). At the higher capacitor values, the bandwidth is dominated by the RC network, formed by RISO and CL.
16 15 14 13 12 11 10 10 40 70 100 130 160 190 220 CLOAD (pF)
Power-Dissipation Considerations
The MAX4137/MAX4138 can drive up to four outputs simultaneously. Quiescent power dissipation is typically 520mW and 650mW maximum, respectively, with all channels enabled. The maximum package power dissipation is rated at 1540mW. In a typical application, four outputs drive a standard video signal into a 150 load. The amount of power added to the quiescent dissipation is minimal and no special precautions are necessary. However, each output driving the maximum 65mA into 30 will cause a power-dissipation increase of approximately 200mW. Therefore, you should not allow more than three outputs to deliver that load simultaneously. Similarly, one output shorted to ground will cause a power-dissipation increase of 650mW. Only one output can be shorted to ground without violating the package power rating.
Figure 5. Optimal Isolation Resistor (RISO) vs. CLOAD
In conclusion, during normal operation in a matchedload environment, the total power dissipation is well within the package's dissipation rating. The maximum power dissipation is violated only if multiple channels are driving the maximum current into minimum loads at the same time.
10
______________________________________________________________________________________
1-Input/4-Output Video Distribution Amplifiers MAX4137/MAX4138
SC1M2 SC1M1
SEL1 SEL2 CAMERA 1 SUBCARRIER (SC1) 75 SEL4 IN SEL3
OUT1 OUT2
75 VIDEO SYNC 75 MONITOR1
OUT3 OUT4 75
75
SC1M4 SC1M3 SC2M2 SC2M1
MAX4137 MAX4138
75 SYNC 75 SEL1 SEL2 OUT1 OUT2 OUT3 OUT4 SEL4 VIDEO 75 MONITOR INPUTS VIDEO 75 MONITOR2
CAMERA 2 SUBCARRIER (SC2) 75
IN SEL3
SC2M4 SC2M3 M2 M1
MAX4137 MAX4138
SYNC 75
75 MONITOR3
SEL1 COMPOSITE SYNC (FROM GENLOCK) 75 SEL4 SEL2 IN SEL3
OUT1 OUT2 OUT3 OUT4
75 75 75 75 SYNC 75 VIDEO 75 MONITOR4
M4 M3
MAX4137 MAX4138
Figure 6. Two Cameras to Four Monitors Distribution Amplifier
______________________________________________________________________________________ 11
1-Input/4-Output Video Distribution Amplifiers MAX4137/MAX4138
___________________Chip Information
TRANSISTOR COUNT: 625 SUBSTRATE CONNECTED TO VEE
________________________________________________________Package Information
DIM INCHES MAX MIN 0.104 0.093 0.012 0.004 0.019 0.014 0.013 0.009 0.299 0.291 0.050 0.419 0.394 0.050 0.016 MILLIMETERS MIN MAX 2.35 2.65 0.10 0.30 0.35 0.49 0.23 0.32 7.40 7.60 1.27 10.00 10.65 0.40 1.27
D 0- 8 A e B
0.101mm 0.004in.
A1
C
L
A A1 B C E e H L
DIM PINS
E
H
Wide SO SMALL-OUTLINE PACKAGE (0.300 in.)
D D D D D
16 18 20 24 28
INCHES MIN MAX 0.398 0.413 0.447 0.463 0.496 0.512 0.598 0.614 0.697 0.713
MILLIMETERS MIN MAX 10.10 10.50 11.35 11.75 12.60 13.00 15.20 15.60 17.70 18.10
21-0042A
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 (c) 1996 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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