ROHM BH7645KS2 Technical data
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Structure : Silicon Monolithic Integrated Circuit
Product name : Wide Bandwidth Audio-Video SW for TV
: BH7645KS2
Type
Outer dimensions : Fig.1 SQFP-T52
Block diagram : Fig.2
Features : 1) Video inputs selector : 2-inputs component, 2-inputs Y/C, and 2-inputs composite
2) Component inputs : Correspond to D5 standard
3) Built-in LPF selector(6.75MHz/13.5MHz/30MHz/Through)
4) Built-in Video MUTE function
5) Audio inputs selector : 6-inputs (Lch, Rch)
6) Built-in Power-on MUTE function
2
7) I
C-BUS control
8) Optional Slave address modifications(90H/92H)
2
9) I
C-BUS is compatible with fast mode of Version2.0, but not compatible with Hs mode
10) Built-in detector 3ch(S_SW1/S_SW2/S_SW3)
11) Built-in output port 2ch(PORT1_OUT/PORT2_OUT)
○Absolute Maximum Ratings (Ta=+25℃)
Parameter Symbol Ratings Unit
Supply voltage1 (2pin, 29pin, 33pin, 39pin, 44pin) Vcc1 7 V
Supply voltage2 (12pin) Vcc2 8.8 V
Power dissipation Pd 1300 *1 mW
Input voltage range
Storage temperature range Tstg -55 ～ +125 ℃
VIDEO PART, LOGIC PART V
AUDIO PART V
0 ～ Vcc1+0.2 V
IN1
0 ～ Vcc2+0.2 V
IN2
*1 When mounting on a 70mm×70mm×1.6mm PCB board
Reduced by 13mW/℃ at Ta = +25℃ or higher
○Operating Range
Parameter Symbol Range Unit
Supply voltage1 (2pin, 29pin, 33pin, 39pin, 44pin) Vcc1 +4.5 ～ +5.5 V
Supply voltage2 (12pin) Vcc2 +7.5 ～ +8.5 V
Operating temperature range Topr -40 ～ +85 ℃
* This product is not designed for protection against radioactive rays.
* Note the power supply sequence.
REV. A
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A
○Electrical characteristics （Unless otherwise specified, Ta= 25℃, Vcc1=5.0V, Vcc2=8.0V）
Item Symbol
Min. Typ. Max.
[VIDEO PART]
Circuit current ICCV － 55 80 mA No signal
Voltage gain GVV -0.5 0.0 0.5 dB Vin=1.0Vpp, f=100kHz
Frequency characteristics1
[f=6.75MHz LPF MODE]
Frequency characteristics 2
[f=13.5MHz LPF MODE]
Frequency characteristics 3
[f=30MHz LPF MODE]
Frequency characteristics 4
[f=THROUGH MODE]
Maximum output level VOM
SW crosstalk CTSW
Channel crosstalk CTCH
GF
GF
GF
GF
GF
GF
GF
1-1V
1-2V
2-1V
2-2V
3-1V
3-2V
4-1V
-1.5 0.0 1.0 dB Vin=1.0Vpp, f=6.75MHz/100kHz
-1.5 0.0 1.0 dB Vin=1.0Vpp, f=13.5MHz/100kHz
-1.5 0.0 1.0 dB Vin=1.0Vpp, f=30MHz/100kHz
-3.0 -0.5 2.0 dB Vin=1.0Vpp, f=54MHz/100kHz
V
V
V
MUTE attenuation MTV － -60 -50 dB Vin=1.0Vpp, f=10MHz
Bias input terminal Input impedance ZINV 100 150 － kΩ
[AUDIO PART] (at Gain=0dB)
Circuit current ICCA － 10 15 mA No signal
Voltage gain
0dB GV0A -0.5 0.0 0.5 dB Vin=1.0Vrms, f=1kHz
6dB GV6A 5.5 6.0 6.5 dB Vin=1.0Vrms, f=1kHz
Frequency characteristics GFA -3.0 0.0 3.0 dB Vin=1.0Vrms, f=50kHz/1kHz
Total harmonic distortion THDA － 0.03 0.1 % Vin=1.0Vrms, f=1kHz ※1
0dB VOM0
A
Maximum output level
6dB VOM6
Channel crosstalk CTCH
SW crosstalk CTSW
A
A
A
MUTE attenuation MTA － -100 -85 dB Vin=2.0Vrms, f=1kHz ※1
Remain noise NA － 30 50 uVrms ※1
PSRR PSRR
Input impedance ZINA 100 150 － kΩ
[LOGIC PART etc.]
VIL Vin1L 0 － 1.0 V Low Level input voltage
[SCL]
[SDA]
VIH Vin1H 2.0 － Vcc1 V High Level input voltage
Input bias current IINI2C -10 0 10 uA
SDA output voltage VinL 0 － 0.4 V IL=3.0mA(sink)
VIL Vin2L 0 － 1.0 V Low Level input voltage
[ADR]
[S_SW1]
[S_SW2]
[S_SW3]
[PORT1_OUT]
[PORT2_OUT]
VIH Vin2H 2.0 － Vcc1 V High Level input voltage
Input impedance ZIN
ADR
VIL Vin2L 0 － 1.0 V Low Level input voltage
VIH Vin2H 2.0 － Vcc1 V High Level input voltage
Input impedance ZIN
PORT output
voltage
V
PL
100 150 － kΩ Pull up resistance
SSW
－ － 0.5 V I
Leak current IPH － － 5.0 uA Vcc2=8.0V
Limits
Unit Conditions
- -30 -20 ｄB Vin=1.0Vpp, f=27MHz/100kHz
- -30 -20 dB Vin=1.0Vpp, f=54MHz/100kHz
- -18 -10 dB Vin=1.0Vpp, f=74MHz/100kHz
2.6 3.0 - Vpp f=10kHz, THD=1.0%
－ -60 -50 dB Vin=1.0Vpp, f=10MHz
－ -60 -50 dB Vin=1.0Vpp, f=10MHz
2.0 2.4 － Vrms
2.0 2.4 － Vrms
Maximum value of distortion<0.3%
Maximum value of distortion<0.3%
－ -100 -85 dB Vin=2.0Vrms, f=1kHz ※1
－ -100 -85 dB Vin=2.0Vrms, f=1kHz ※1
－ -45 -38 dB ※2
70 100 130 kΩ
※1 400HzHPF + 30kHzLPF ON
※2 Vin=0.3Vpp, f=100Hz at VCC, 30kHzLPF ON
f=1kHz ※1
f=1kHz ※1
=2.5mA
L
REV. A
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