BA7658AFS-E2 Rohm Semiconductor, BA7658AFS-E2 Datasheet

IC SW INPUT SELECTOR SSOPA32 TR

BA7658AFS-E2

Manufacturer Part Number
BA7658AFS-E2
Description
IC SW INPUT SELECTOR SSOPA32 TR
Manufacturer
Rohm Semiconductor
Type
Input Selector Switchr
Datasheet

Specifications of BA7658AFS-E2

Applications
HDTV
Mounting Type
Surface Mount
Package / Case
32-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The BA7658AFS is an IC designed for high definition displays, and has an internal selector circuit for broadband
RGB signals and HD / VD signals, a synchronization separator circuit, and a NUTEK signal detector circuit. This IC
chip simplifies the configuration of input blocks for high-end displays.
CRT displays, HDTV, video board for personal computer, etc.
1) Operates on a single 5V power supply.
2) Internal broadband RGB selector with a frequency
3) Internal HD / VD selector.
Applications
Features
Absolute maximum ratings (Ta = 25°C)
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
Recommended operating conditions (Ta = 25°C)
Power supply voltage
Reduced by 8.5mW for each increase in Ta of 1 C over 25 C.
Input selector switch for high
definition displays
BA7658AFS
Multimedia ICs
characteristic of 230MHz ( – 3dB)
Parameter
Parameter
Symbol
V
CC
Symbol
Topr
Tstg
V
Pd
CC
Min.
4.5
Typ.
5.0
– 25 ~ + 75
– 55 ~ + 125
Limits
850
7.0
Max.
5.5
4) Internal separator for synchronization signal super-
5) Internal detector for NUTEK power saving signals.
imposed on the G signal.
Unit
V
Unit
mW
V
C
C
1

Related parts for BA7658AFS-E2

BA7658AFS-E2 Summary of contents

Page 1

... Input selector switch for high definition displays BA7658AFS The BA7658AFS designed for high definition displays, and has an internal selector circuit for broadband RGB signals and signals, a synchronization separator circuit, and a NUTEK signal detector circuit. This IC chip simplifies the configuration of input blocks for high-end displays. ...

Page 2

... Signal DET DET 11 Sync 12 Sepa Logic 15 16 BA7658AFS input input 30 HD output 29 Blue output 28 Signal detector input Green output 25 Composite video input (sync on green) 24 Setting of time constant 23 Signal detector output 22 Blanking pulse input 21 N. Sync signal detector 19 Composite sync output 18 Control ...

Page 3

... Blue output 30 HD output input input HD VD IN1 IN1 IN2 IN2 BA7658AFS Function Synchronization signal detector N.C. Blanking pulse input Signal detector output Setting of time constant Composite video input G signal output V CC Signal detector input B signal output Horizontal synchronization signal HD output ...

Page 4

... Input / output circuits input 100 11pin Control 1k 18pin Composite video input V CC from DET out 25k 25pin 100 25k 6.8k 21k 1k 50k Composite sync output 19pin BA7658AFS output 17, 26, 29pin 5mA 400 V CC 35k 15k Setting of time constant V CC 24pin V CC ...

Page 5

... Multimedia ICs Signal detector output V CC 10k 23pin HD. VD input 1k 14, 15 31, 32pin 50k HD sync signal detector from HD out to sync sepa 670 20pin Signal detector input 28pin HD. VD input V CC 35k 15k V CC 25k 25k BA7658AFS 100 F. 2.7k 100 16, 30pin 5 ...

Page 6

... OL I – 1.8 — — 3.6 — — — 60 110 — 50 100 — 100 150 — 150 200 ns FD BA7658AFS Conditions Measurement circuit Fig 1kHz Fig 1MHz Fig P 1MHz Fig P 1MHz Fig P 10MHz Fig P 10MHz Fig P-P V Fig Fig 5.0V Fig ...

Page 7

... IH V — — 1 100 130 IH V – 3 – 1 — IL Symbol Min. Typ. Max. Gf – 6 – 3 – 1 GfI – GfB – CTIZ — – 30 – 15 CTBZ — – 30 – 15 BA7658AFS Unit Conditions Measurement circuit Unit Conditions Measurement circuit dB 1MHz / 230MHz P-P dB ...

Page 8

... SW10 3 Oscilloscope 8 1 SW1 SW2 SW3 0. SW4 220k SW5 4 SW6 470k 470pF Fig. 1 BA7658AFS 1.2V 5 1.8V 4 OSC5 SW20 SW19 Oscilloscope Oscilloscope 3 Spectrum Analyzer SW18 2 SW16 OSC4 2 SW17 Vcc = OSC3 SW15 Oscilloscope SW14 SW13 2 1 Oscilloscope 3 SW12 1.2V SW11 2 1.8V 1 ...

Page 9

... Multimedia ICs • Measurement circuit for frequency characteristics and crosstalk characteristics Terminating resistor Terminating resistor C1: 0. Terminating resistor Terminating resistor Terminating resistor Terminating resistor Fig. 2 BA7658AFS 270 Network 29 Analyzer 0. 270 Network 26 Analyzer 1. 1.2V 2 270 Network 17 Analyzer 9 ...

Page 10

... Use an oscillator to input a sine wave (V IN P-P 230MHz and R1. Connect B1 to the ground through a capacitor. Set the switch to 1 and measure the B output. CTB2B = 20log (V Similarly CTB2G = 20log (V IN P-P CTB2R = 20log (V BA7658AFS / V ) [dB] OUT IN = 1. G1) [dB] OUT R1) [dB] OUT ...

Page 11

... Output HD VD Composite Sync — — — — — — — — — — — BA7658AFS , V = 5.0V), the high level volt- P ...

Page 12

... Application example 0.01 F IN1 6. 6. 6.3V 75 IN2 OUT Signal 0.01 F DET DET 0. Sync Sepa Logic 15 16 Fig. 3 BA7658AFS OUT Ro B OUT 6.3V 0. OUT 220k 24 4.7 F Signal DET OUT 23 Signal Signal Blanking pulse 470k 470pF 19 Syncsepa out 18 CTL IN1: H IN2 OUT 17 ...

Page 13

... A too-large resistance will lower the characteristics peak. • External dimensions (Units: mm) 13.6 0 0.8 0.36 0.1 SSOP-A32 10 0 – 10 – 20 – 30 – 40 – 50 – 60 – 70 – 80 – 90 300M 1M 10M FREQUENCY: f (Hz) Fig. 5 Interchannel crosstalk characteristics 0.3Min. 0.15 BA7658AFS 100M 300M 13 ...

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