WG 2267 DUAL CHANNELS VIDEO 6dB AMPLIFIER WITH 75Ω DRIVER n DESCRIPTION WG2267 is a high performance, low voltage, and low power consumption dual channels video coupling capacitance. With DC-coupled, it can eliminate large output coupling capacitors and driver. The internal transparent clamp circuit can restore composite video signal to fixed DC level. save board space. It’s low voltage and low power consumption is suitable for portable device Only small ceramic capacitor (0.1uF typical) is required for AC-coupled input. The output can be composite video output. WG2267 can also be configured as bias inputs video driver when configured as AC or DC-coupled output. With AC-coupled, sag correction can reduce output normal video signals are needed. n FEATURES l Low voltage operation 2.8V~5.5V l Transparent internal clamp AC or DC-coupled output l l l l n RoHS compliant Pb-free TSOP-8 and SOP-8 Package ESD > 5500 HBM APPLICATIONS DVD player l Security camera Set-top box l Portable media player Communication device l Digital still camera l PACKAGE OUTLINE Dual video load drive (75 ohm x 2) SAG correction reduce output capacitance l l n TSOP-8 n SOP-8 BLOCK DIAGRAM VCC 7 IN2 8 + 6DB 5 OUT2 6 SAG2 4 OUT1 3 SAG1 - CLAMP IN1 1 + 6DB - CLAMP 2 GND 1-7 WG 2267 n ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC 6 V Continuous Output Current (One Channel) Io 45 mA Power Dissipation PD SOP 300 mW TSOP 250 Operating Temperature Topr -40 ~ +85 ℃ Storage Temperature Tstg -65 ~ +125 ℃ n 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, CL=5pF 7 -- -- MHZ BW2 +/- 3dB Bandwidth, RL=150 ohm, CL=5pF 10 -- -- MHZ 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 25 40 60 V/uS -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 2-7 WG 2267 n PIN DESCRIPTION Pin No. n 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 WG 2267 1 2 3 4 VIDEO IN1 VIDEO OUT1 0. 1uF 75 22uF 3-7 WG 2267 Application 2: With input capacitors but without output capacitors, at VCC = 2.8V~3.3V, one load VC C 100uF 0 . 1uF VI DEO I N 2 0.1uF VID EO OU T2 75 75 8 7 6 5 IA167 WG 2267 1 2 3 4 75 VI DEO I N 1 VID EO OU T1 0.1uF 75 Application 3: S-video input at VCC = 2.8V~5.0V. channel 1: clamp, channel 2: bias, one load VC C VC C 100uF 0. 1uF 68K 22uF VI DEO I N 2 0. 1uF 75 VI D EO OU T2 100K 8 7 6 47uF 75 47uF 75 5 IA167 WG 2267 1 2 3 VI DEO I N 1 4 VI D EO OU T1 0. 1uF 75 22uF 4-7 WG 2267 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 WG 2267 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 5 IA167 WG 2267 1 2 VIDEO IN 0.1uF 75 5-7 3 4 75 WG 2267 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 WG 2267 1 2 3 4 VIDEO IN1 VIDEO OUT1-1 0.1uF VIDEO OUT1-2 75 22uF n 75 COMPATIBLE DEVICE WG2267 is function and pin-to-pin compatible with NJRC NJM2267. WG2267 is more suitable for low voltage and low power application 6-7 WG 2267 n PERFORMANCE CURVE Input Voltage vs Supply Voltage Output Voltage vs Supply Voltage Output Dynamic Range S/N vs Supply Voltage Frequency Characteristic〔Lin〕 7-7