Intelligent Analog IA167 Dual channels video driver Features Low voltage operation 2.8V~5.5V Transparent internal clamp AC or DC-coupled output Dual video load drive (75 ohm x 2) SAG correction reduce output capacitance RoHS compliant Pb-free TSOP-8 and MSOP-8 package ESD > 5500 HBM Applications DVD player Security camera Set-top box Portable media player Communication device Digital still camera Block Diagram VCC 7 IN2 8 + 6DB 5 OUT2 6 SAG2 4 OUT1 3 SAG1 - CLAMP IN1 1 + 6DB - CLAMP 2 GND Description IA167 is a high performance, low voltage, and low power consumption dual channels video driver. The internal transparent clamp circuit can restore composite video signal to fixed DC level. Only small ceramic capacitor (0.1uF typical) is required for AC-coupled input. The output can be configured as AC or DC-coupled output. With AC-coupled, sag correction can reduce output coupling capacitance. With DC-coupled, it can eliminate large output coupling capacitors and save board space. It’s low voltage and low power consumption is suitable for portable device composite video output. IA 167 can also be configured as bias inputs video driver when normal video signals are needed. Absolute Maximum Rating Supply Voltage 10V Continuous Output Current (One Channel) 45mA Power Dissipation Operating Temperature 250mW -40℃~+85℃ Storage Temperature -65℃~+125℃ Electrical Specifications VCC=+3.0V, Ta=25℃, RL=150 ohm, CL=0.1uF DESCRIPTION PARAMETER MIN TYP MAX UNIT ISB1 Standby Current at VCC=+3.0V 12 16 mA ISB2 Standby Current at VCC=+5.0V 14 18.5 mA VOL Output Level Shift Voltage 300 450 mV VCLAMP Input Clamp Voltage 1.00 1.2 1.40 V GV Voltage Gain 5.8 6.3 6.8 dB AC PERFORMANCE BW1 +/- 1dB Bandwidth, RL=150 ohm, 7 MHZ 10 MHZ CL=5pF BW2 +/- 3dB Bandwidth, RL=150 ohm, CL=5pF dG Differential Gain 0.5 1 dP Differential Phase 0.5 1 dG DC Differential Gain DC-coupled 0.2 0.5 dP DC Differential Phase DC-coupled 0.2 0.5 ° +SR Positive Slew Rate, V in =1V step 40 60 V/uS 25 ％ ° ％ -SR Negative Slew Rate, V in =1V step 20 30 45 V/uS SNR Signal to Noise Ratio 65 dB CT Cross Talk -70 dB Pin Description Pin No. Pin Type Pin Function 1 Input Video1 signal input 2 - Vss 3 Input Video1 sag input 4 Output Video1 output 5 Output Video2 output 6 Input Video2 sag input 7 - Vcc 8 Input Video1 signal input Typical Applications Application 1: 2 channels composite input at VCC = 2.8V~5.0V, with input and output capacitors, one load VCC 100uF 0.1uF 22uF VIDEO IN2 0.1uF VIDEO OUT2 75 8 7 6 47uF 75 47uF 75 5 IA167 1 2 3 4 VIDEO IN1 VIDEO OUT1 0.1uF 75 22uF Application 2: With input capacitors but without output capacitors, at VCC = 2.8V~3.3V, one load VCC 100uF 0.1uF VIDEO IN2 0.1uF VIDEO OUT2 75 75 8 7 6 5 IA167 1 2 3 4 75 VIDEO IN1 VIDEO OUT1 0.1uF 75 Application 3: S-video input at VCC = 2.8V~5.0V. channe1: clamp, channel 2: bias, one load VCC VCC 100uF 0.1uF 68K 22uF VIDEO IN2 0.1uF 75 VIDEO OUT2 100K 8 7 6 47uF 75 47uF 75 5 IA167 1 VIDEO IN1 2 3 4 VIDEO OUT1 0.1uF 75 22uF Application 4: 2 channels bias input VCC VCC 100uF 0.1uF 68K 22uF VIDEO IN2 0.1uF 75 VIDEO OUT2 100K 8 7 6 47uF 75 47uF 75 5 IA167 VCC 1 2 3 4 68K VIDEO IN1 VIDEO OUT1 0.1uF 75 100K 22uF Application 5: 12dB amp, at VCC = 5.0V, 4V output, one load VCC 100uF 0.1uF 22uF 0.1uF VIDEO OUT 47uF 8 7 6 75 5 IA167 1 2 3 4 VIDEO IN 0.1uF 75 Application 6: 2 channels composite input at VCC=2.8V~5.0V, with input and output capacitors, two loads VCC 100uF 0.1uF 22uF 75 VIDEO IN2 VIDEO OUT2-1 0.1uF VIDEO OUT2-2 75 8 7 6 100uF 75 100uF 75 5 IA167 1 2 3 4 VIDEO IN1 VIDEO OUT1-1 0.1uF VIDEO OUT1-2 75 22uF 75 Compatible Device IA167 is function and pin-to-pin compatible with NJRC NJM2267. IA167 is more suitable for low voltage and low power application Performance Curve Input Voltage vs Supply Voltage Output Dynamic Range Output Voltage vs Supply Voltage S/N vs Supply Voltage