 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| Multimedia ICs 75 driver IC with 3 internal circuits BA7622F The BA7622F is a 75 driver-IC developed for use in video equipment. It includes three 75 driver circuis,two of which have sync-tip clamp inputs.The other driver has a biased input terminated with a 20k resistor.Each output can drive two loads (75 x 2). *Applications recorders, televisions and camcorders Video cassette *Features clamp circuits. 1) Two built-in 2) Simultaneous drive of Y, C and composite video signals possible. 3) Each output can drive two loads. *Absolute maximum ratings (Ta = 25C) Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Symbol VCC Pd Topr Tstg Limits 8.0 550 - 25 ~ + 75 - 55 ~ + 125 Unit V mW C C Reduced by 5.5mW for each increase in Ta of 1C over 25C. 1 Multimedia ICs BA7622F *Block diagram GND 1 75 driver 8 OUT1 IN1 2 Clamp 75 driver 7 OUT2 IN2 3 Clamp 75 driver 6 OUT3 20k IN3 4 NO Clamp 5 VCC *Pin descriptions Pin No. 1 2 3 4 5 6 Pin name GND IN1 IN2 IN3 VCC OUT3 Ground connection Clamp input Input composite video or the Y signal separated from Y / C. Clamp input Input composite video or the Y signal separated from Y / C. Biased input Input the chroma signal. Terminated with a 20k resistor. Power supply Biased output Output for the signal input to IN3. When connected to earth a protection circuit operates, and the IC enters power-save mode. Clamped output Output for the signal input to IN2. When connected to earth a protection circuit operates, and the IC enters power-save mode. Clamped output Output for the signal input to IN1. When connected to earth a protection circuit operates, and the IC enters power-save mode. Function 7 OUT2 8 OUT1 2 Multimedia ICs BA7622F *Electrical characteristics (unless otherwise noted, Ta = 25C and VCC = 5V, and load is two system drive) Parameter Operating voltage Circuit current Maximum output level Voltage gain Frequency characteristics Differential gain 75 drive 1 Differential phase 75 drive 1 Differential gain 75 drive 2 Differential phase 75 drive 2 Interchannel crosstalk Input impedance (VIN3) Total-harmonic distortion (VIN3) Symbol VCC ICC Vom Gv Gf DG1 DP1 DG2 DP2 CT ZIN3 THD32 Min. 4.5 -- 2.8 - 1.2 -3 -- -- -- -- -- 17 -- Typ. 5.0 23.6 3.3 - 0.6 0 0.4 0.4 0.7 0.7 - 60 20 0.1 Max. 5.5 35.4 -- 0 1.3 1.0 1.0 2.0 2.0 -- 23 0.5 Unit V mA VP-P dB dB % deg % deg dB k % No signal f = 1kHz, THD = 1.0% f = 1MHz, VIN = 2.0VP-P 10MHz / 1MHz, VIN = 1.0VP-P VIN = 2.0VP-P, standard staircase signal VIN = 2.0VP-P, standard staircase signal VIN = 2.0VP-P, standard staircase signal VIN = 2.0VP-P, standard staircase signal f = 4.43MHz, VIN = 2.0VP-P -- f = 1kHz, VIN = 1.0VP-P Conditions -- *Input / output circuits OUT1, 2, 3 20k VCC IN1, 2 VCC 2, 3 6, 7, 8 100A IN3 VCC 20k 4 10k 100A 3 Multimedia ICs BA7622F *Measurement circuit Vector Scope Analyzer Audio Vector Scope Analyzer Audio Vector Scope Analyzer Audio V ~ 1 SWD 2 3 SWE 1 V ~ 2 3 SWF + 47F 1 75 driver 8 + 75 75 0.022F 1 V ~ 2 3 VCC = 5V 470 + 470 + 75 2 Clamp 75 driver 7 75 3 20k 4 Clamp 75 driver 6 75 75 The circuit for driving one 75 output load. The circuit for driving two 75 output loads is as. + 1000 75 75 75 75 470 NO Clamp 5 VCC = 5V SWA 1 + 2 3 4 SWB 1 200A + 2 3 4 ++ 1 1 1 600 V VCC = 5V SWC 1 200A + 2 3 4 VCC = 5V ++ 1 1 1 600 ++ 1 1 1 600 50A ~ OSC ~ SG ~ OSC ~ SG V ~ OSC ~ SG V Fig.1 4 Multimedia ICs BA7622F *Measurement conditions Parameter Current dissipation Symbol ICC Vom12 Maximum output level Vom22 Vom32 Gv12 Voltage gain Gv22 Gv32 f12 Frequency characteristic f22 f32 CT112 CT113 Interchannel crosstalk CT211 CT213 CT311 CT312 Input resistance ZIN3 THD12 Total-harmonic distortion THD22 THD32 IN1 SWA 3 1 3 3 1 3 3 1 3 3 1 1 3 3 3 3 3 1 3 3 IN2 SWB 3 3 1 3 3 1 3 3 1 3 3 3 1 1 3 3 3 3 1 3 IN3 SWC 3 3 3 1 3 3 1 3 3 1 3 3 3 3 1 1 4 3 3 1 OUT1 SWD x 3 x x 3 x x 3 x x x x 3 x 3 x x 3 x x OUT2 SWE x x 3 x x 3 x x 3 x 3 x x x x 3 x x 3 x OUT3 SWF x x x 3 x x 3 x x 3 x 3 x 3 x x x x x 3 -- -- Conditions -- 1 2 3 4 x: Any of switches 1, 2, or 3 possible. 1: Connect a distortion meter to the output, and input a f = 1kHz sine wave. Adjust the input level until the output distortion is 0.5%. This output voltage 2: Input a 2.0VP-P, 1MHz sine wave. The voltage gain is given by GV = 20 log (VOUT / VIN). 3: Measure the input pin voltage VIN50 when a current of DC50A is flowing into the input pin. Measure the input pin open-circuit voltage VIN0. -6 4: Input a 1.0VP-P, 1kHz sine wave. Connect a distortion meter to the output and measure the total-harmonic distortion. The input impedance is given by Z = (VIN50 - VIN0) / 5010 []. at this time is the maximum output level Vom (VP-P). 5 Multimedia ICs BA7622F *Application example VCC = 5V + 47F 0.022F 75 1 75 driver 8 + 1000F 75 VIDEO OUT1 VIDEO OUT2 Y C Composite Video Signal + 1F 2 Clamp 75 driver 7 + 1000F 75 Y Signal + 1F 3 Clamp 20k 75 driver 6 + 1F 75 75 5 75 Y C C Signal 0.01F 4 NO Clamp Fig.2 *Electrical characteristic curves 20 GAIN: GV (dB) 0 - 20 - 40 - 60 - 80 0 GAIN: GV (dB) - 20 - 40 100k 1M 10M 100M 100k 1M 10M 100M FREQUENCY: f (Hz) FREQUENCY: f (Hz) Fig. 3 Frequency characteristic Fig. 4 Crosstalk 6 Multimedia ICs BA7622F *Extermal dimensions (Units: mm) 5.0 0.2 8 6.2 0.3 4.4 0.2 5 1.5 0.1 1 4 0.11 1.27 0.4 0.1 0.3Min. 0.15 SOP8 0.15 0.1 7 |
Price & Availability of BA7622
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |