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BA7625
Datasheet
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ROHM BA7625 Datasheet

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1
Multimedia ICs
Video signal switcher for AV amplifiers
BA7625
The BA7625 is a video signal switch that contains two five-channel analog multiplexers and wide-band 6dB ampli­fiers.It designed for use in video cassette recorders. By simply adding transistor buffers to the outputs,it is possible to construct arecord / playback switch for two record / playback VCRs, and three video playback machines (eg.laser disk players). Input switching and VCR record switching can be done independently. The BA7625 has sync-tip clamp inputs which are ideal for switching video signals.
•
Applications
AV amplifiers and video selectors
•
Features
1) 5-input / 3-output switches.
2) Sync-tip clamp inputs.
3) Built-in 6dB amplifiers.
4) 5V supply voltage.
•
Absolute maximum ratings (Ta = 25°C)
Parameter Symbol Limits Unit
V
CC 9V
500
∗
mW Topr °C Tstg °C
Pd
– 25 ~ + 70 – 55 ~ + 125
Power supply voltage Power dissipation Operating temperature Storage temperature
∗
Reduced by 5mW for each increase in Ta of 1°C over 25°C.
2
Multimedia ICs BA7625
•
Block diagram
IN5
1IN1
CTL A
V
OUT1
V
CC
IN2
CTL B
V
OUT 2
GND
GND
IN4
CTL E
CTL D
16
15
14
13
12
11
10
9
2
3
4
5
6
7
8
IN3
CTL C
logic
logic
6dB
6dB
Monitor OUT
•
Truth table
CDE VOUT2 LL
∗
IN1
HL
∗
—
LH
∗
IN3 H H L IN4 H H H IN5
CDE VOUT1
LL
∗
—
HL
∗
IN2
LH
∗
IN3 H H L IN4 H H H IN5
ABE LL
∗
IN1
HL
∗
IN2
LH
∗
IN3 H H L IN4 HHH IN5
Note 1: ∗ indicates "don't care" (H or L).
Monitor OUT
3
Multimedia ICs BA7625
•
Equivalent input / output circuits
Vcc
Q1
V1
+
2.7V
I1
100µA
Q2
Q3
R1
200 200
R2
V
IN
Vcc
Q1
Q2
58kO158k
R2 R3
38k
R4
R1
2k
IN
Vcc
MONOUT
17k
R1
Q1
Q2
Q3
Q5
Q4
100
R2
Vcc VOUT1
VOUT
48k
R1I1
O1
DN
25BUR
I2 600µA
Q2
Q4
1.4mA
1.4mA
Q3
100
R2
Q1
1VP-P
DC 2.0V
2VP-P
DC 0.5V
3.3V
High level
Vcc = 5.0V
2.1V
Low level
2VP-P
DC 0.5V
IN1 ~ IN5
CTLA ~ CTLE
Monitor OUT
V
OUT1 , VOUT2
Input circuit Waveform
4
Multimedia ICs BA7625
•
Electrical characteristics (unless otherwise noted, Ta = 25°C and VCC = 5V)
Parameter Symbol Min. Typ. Max. Unit Conditions
V
CC 4.5 5.0 5.5 V —
I
CC — 15.0 20.0 mA —
V
om 2.6 2.9 — VP-P f = 1kHz, THD = 0.5%
G
V dB f = MHz, VIN = 1VP-P
CT — – 65 – 45 dB f = 4.43MHz, VIN = 1VP-P
CTM — – 35 – 25 dB f = 4.43MHz, VIN = 1VP-P
Gf – 3 0 dB
V
TH 2.2 — 3.3 V —
10MHz / 1MHz, V
IN = 1VP-P
5.7 6.2 6.7
3
Operating voltage Supply current Maximum output level Voltage gain Interchannel crosstalk Mute level Frequency characteristic CTL pin switch level
䊊Not designed for radiation resistance.
•
Measurement circuit
SW5 SW4
V
V
V
V
V
V
V
V
V
V
V
V
V
A
logic
logic
6dB
6dB
123456
7
8
16
15 14
13
12
11 10
9
SW
5 SW4 SW3
1
2
3
75
105
MONITOR
OUT
105
12
3
V
CC
VCC
1
2
3
75
105
1
2
3
75
105 105
SW
E
12
3
SW
D
23
105
75
105
1
1
V
CC
VOUT1
SWASW1 SW2 SWB
SWC
VOUT2
2
3
1
23
105
75
105
1
V
CC
VCC
2
3
1
2
3
103
4.7µ
V
CC
105
Fig.1
5
Multimedia ICs BA7625
•
Measurement conditions
SW1 SW2 SW3 SW4 SW5 SWA SWB SWC SWD SWE
ICC 3333322222
V
om 1MON
V
om 2MON
V
om 3MON
V
om 4MON
V
om 5MON
2 3
↓ ↓ ↓
3 2 3
↓ ↓
3
↓
2 3
↓
3
↓ ↓
2 3
3
↓ ↓ ↓
2
3 2 3 2 2
3 3 2 2 2
∗
↓ ↓ ↓ ↓
∗
↓ ↓ ↓ ↓
∗
↓ ↓
3 2
G
V 1MON
G
V 2MON
G
V 3MON
G
V 4MON
G
V 5MON
2 3
↓ ↓ ↓
3 2 3
↓ ↓
3
↓
2 3
↓
3
↓ ↓
2 3
3
↓ ↓ ↓
2
3 2 3 2 2
3 3 2 2 2
∗
↓ ↓ ↓ ↓
∗
↓ ↓ ↓ ↓
∗
↓ ↓
3 2
C
T1-2MON
C
T1-3MON
C
T1-4MON
C
T1-5MON
2
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
2 3 2 2
3 2 2 2
∗
↓ ↓ ↓
∗
↓ ↓ ↓
∗
↓
3 2
C
T2-1MON
C
T2-3MON
C
T2-4MON
C
T2-5MON
3
↓ ↓ ↓
2
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
3 3 2 2
3 2 2 2
∗
↓ ↓ ↓
∗
↓ ↓ ↓
∗
↓
3 2
C
T3-1MON
C
T3-2MON
C
T3-4MON
C
T3-5MON
3
↓ ↓ ↓
3
↓ ↓ ↓
2
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
3 2 2 2
3 3 2 2
∗
↓ ↓ ↓
∗
↓ ↓ ↓
∗
↓
3 2
C
T4-1MON
C
T4-2MON
C
T4-3MON
C
T4-5MON
3
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
2
↓ ↓ ↓
3
↓ ↓ ↓
3 2 2 2
3 3 2 2
∗
↓ ↓ ↓
∗
↓ ↓ ↓
∗
↓ ↓
3
C
T5-1MON
C
T5-2MON
C
T5-3MON
C
T5-4MON
3
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
2
↓ ↓ ↓
3 2 2 2
3 3 2 2
∗
↓ ↓ ↓
∗
↓ ↓ ↓
∗
↓ ↓
2
G
f 1MON
G
f 2MON
G
f 3MON
G
f 4MON
G
f 5MON
2 3
↓ ↓ ↓
3 2 3
↓ ↓
3
↓
2 3
↓
3
↓ ↓
2 3
3
↓ ↓ ↓
2
3 2 3 2 2
3 3 2 2 2
∗
↓ ↓ ↓ ↓
∗
↓ ↓ ↓ ↓
∗
↓ ↓
3 2
V
om 2OUT1
V
om 3OUT1
V
om 4OUT1
V
om 5OUT1
3
↓ ↓ ↓
2 3
↓ ↓
3 2 3
↓
3
↓
2 3
3
↓
3 2
∗
↓ ↓ ↓
∗
↓ ↓ ↓
2 3 2 2
3 2 2 2
∗
↓
3 2
Parameter Symbol
Switch settings
Measure­ment method
Current dissipation
Monitor OUT maximum output level
Monitor OUT voltage gain
Monitor OUT interchannel crosstalk
Monitor OUT frequency characteristic
V
OUT1 maximum
output level
Note 1
Note 2
Note 3
Note 4
Note 1
—
6
Multimedia ICs BA7625
SW1 SW2 SW3 SW4 SW5 SWA SWB SWC SWD SWE
GV 2OUT1 G
V 3OUT1
G
V 4OUT1
G
V 5OUT1
3
↓ ↓ ↓
2 3
↓ ↓
3 2 3
↓
3
↓
2 3
3
↓
3 2
∗
↓ ↓ ↓
∗
↓ ↓ ↓
2 3 2 2
3 2 2 2
∗
↓
3 2
C
T1-2OUT1
C
T1-3OUT1
C
T1-4OUT1
C
T1-5OUT1
2
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
∗
↓ ↓ ↓
∗
↓ ↓ ↓
3 3 2 2
3 2 2 2
∗
↓
3 2
C
T2-1OUT1
C
T2-3OUT1
C
T2-4OUT1
C
T2-5OUT1
3
↓ ↓ ↓
2
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
∗
↓ ↓ ↓
∗
↓ ↓ ↓
3 3 2 2
3 2 2 2
∗
↓
3 2
C
T3-1OUT1
CT3-2OUT1 CT3-4OUT1 CT3-5OUT1
3
↓ ↓ ↓
3
↓ ↓ ↓
2
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
∗
↓ ↓ ↓
∗
↓ ↓ ↓
3 2 2 2
3 3 2 2
∗
↓
3 2
C
T4-1OUT1
CT4-2OUT1 CT4-3OUT1 CT4-5OUT1
↓
3
↓ ↓
↓
3
↓ ↓
↓
3
↓ ↓
↓
2
↓ ↓
↓
3
↓ ↓
↓
∗
↓ ↓
↓
∗
↓ ↓
2
3 3
2
3
3 2
2
↓
∗
↓
2
C
T5-1OUT1
CT5-2OUT1 CT5-3OUT1 C
T5-4OUT1
3
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
2
↓ ↓ ↓
∗
↓ ↓ ↓
∗
↓ ↓ ↓
3 2 3 2
3 3 2 2
∗
↓ ↓
3
G
f 2OUT1
Gf 3OUT1 Gf 4OUT1 G
f 5OUT1
3
↓ ↓ ↓
2 3
↓ ↓
3 2 3
↓
3
↓
2 3
3
↓ ↓
2
∗
↓ ↓ ↓
∗
↓ ↓ ↓
2 3 2 2
3 2 2 2
∗
↓
3 2
V
om 1OUT2
Vom 3OUT2 Vom 4OUT2 V
om 5OUT2
2 3
↓ ↓
3 2 3
↓
3
↓ ↓ ↓
3
↓
2 3
3
↓ ↓
2
∗
↓ ↓ ↓
∗
↓ ↓ ↓
3 3 2 2
3 2 2 2
∗
↓
3 2
G
V 1OUT2
GV 3OUT2 GV 4OUT2 G
V 5OUT2
2 3
↓ ↓
3 2 3
↓
3
↓ ↓ ↓
3
↓
2 3
3
↓ ↓
2
∗
↓ ↓ ↓
∗
↓ ↓ ↓
3 3 2 2
3 2 2 2
∗
↓
3 2
Parameter Symbol
Switch settings
Measure­ment method
V
OUT2
maximum output level
V
OUT1
voltage gain
V
OUT1
interchannel crosstalk
V
OUT1
frequency characteristic
V
OUT2
voltage gain
Note 2
Note 3
Note 4
Note 1
Note 2
7
Multimedia ICs BA7625
SW1 SW2 SW3 SW4 SW5 SWA SWB SWC SWD SWE
CT1-2OUT2 CT1-3OUT2 CT1-4OUT2 C
T1-5OUT2
2
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
∗
↓ ↓ ↓
∗
↓ ↓ ↓
2 3 2 2
3 2 2 2
∗
↓
3 2
C
T2-1OUT2
CT2-3OUT2 CT2-4OUT2 C
T2-5OUT2
3
↓ ↓ ↓
2
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
∗
↓ ↓ ↓
∗
↓ ↓ ↓
3 3 2 2
3 2 2 2
∗
↓
3 2
C
T3-1OUT2
CT3-2OUT2 CT3-4OUT2 C
T3-5OUT2
3
↓ ↓ ↓
3
↓ ↓ ↓
2
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
∗
↓ ↓ ↓
∗
↓ ↓ ↓
3 2 2 2
3 3 2 2
∗
↓
3 2
C
T4-1OUT2
CT4-2OUT2 CT4-3OUT2 C
T4-5OUT2
3
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
2
↓ ↓ ↓
3
↓ ↓ ↓
∗
↓ ↓ ↓
∗
↓ ↓ ↓
3 2 3 2
3 3 2 2
∗
↓ ↓
2
C
T5-1OUT2
C
T5-2OUT2
C
T5-3OUT2
C
T5-4OUT2
3
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
3
↓ ↓ ↓
2
↓ ↓ ↓
∗
↓ ↓ ↓
∗
↓ ↓ ↓
3 2 3 2
3 3 2 2
∗
↓ ↓
3
G
f 1OUT1
G
f 3OUT1
G
f 4OUT1
G
f 5OUT1
2 3
↓ ↓
3 3
↓ ↓
3 2 3
↓
3
↓
2 3
3
↓ ↓
2
∗
↓ ↓ ↓
∗
↓ ↓ ↓
3 3 2 2
3 2 2 2
∗
↓
3 2
CTM V
OUT1
CTM VOUT2
2
↓
3
↓
3
↓
3
↓
3
↓
∗
↓
∗
↓
3 2
3
↓
∗
↓
V
TH A
V
TH B
V
TH C
V
TH D
V
TH E
2 3 2 3
↓
3
↓ ↓ ↓ ↓
3 2 3 2 3
3
↓ ↓ ↓
2
3
↓ ↓ ↓ ↓
1 3
∗
↓
2
3 1
∗
↓
2
∗
↓
1 3
∗
∗
↓
3 1
∗
∗
↓ ↓ ↓
1
Parameter Symbol
Switch settings
Measure­ment method
Note 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 at this time is the maximum output level V
om (VP-P).
Note 2: Input a 1V
P-P, 1MHz sine wave. The voltage gain (in dB) is given by GV = 20 log (VOUT / VIN).
Note 3: Input a 1V
P-P, 4.43MHz sine wave. The interchannel crosstalk (in dB) is given by CT = 20 log (VOUT / VIN) + 6.
Note 4: Input 1V
P-P, 1MHz and 10MHz sine waves. The frequency characteristic (in dB) is given by Gf = 20 log (VOUT (f = 10MHz) / VOUT (f = 1MHz) ).
Note 5: Input a 1V
P-P, 4.43MHz sine wave. The mute level is given by CTM = 20 log (VOUT / VIN) + 6 (dB).
Note 6: Input a 1V
P-P, 1MHz sine wave. Reduce the CTL pin voltage from VCC.
The CTL pin switching level (V
TH) is the CTL pin voltage at which the VOUT level drops below 10mVP-P.
Mute level
V
OUT2
interchannel crosstalk
V
OUT2
frequency characteristic
CTL switching level
Note 3
Note 4
Note 5
Note 6
8
Multimedia ICs BA7625
•
Application example
VOUT1
1IN1MONOUT
FRONT
75Ω
2.2µ
GND
IN5
GND
IN4
CTL E
IN3
CTL A
V
CC
IN2
CTL B
CTL C
16
15
14
13
12
11
10
9
2
3
4
5
6
7
8
VOUT2
CTL D
75Ω
2.2µ
470µ
75Ω
2.2µ
47µ
0.01µ
A933
+ 5.0V
REAR
75Ω
2.2µ
75Ω
2.2µ
F / R
CTL
REC CTL
AUX
75Ω
470µ
100Ω
V
CC
BS
LD
MON
CTL
75
V
CC
75Ω
470µ
V
CC
100Ω
TV
VTR
OUT
IN1
VTR
OUT
IN2
100Ω
Fig.2
+
+
+
+
+
+
+
++
•
External dimensions (Units: mm)
DIP16
0.51Min.
0.3
± 0.1
916
81
6.5 ± 0.3
3.2 ± 0.2
4.25 ± 0.3
0.5 ± 0.1
19.4 ± 0.3
2.54
0° ~ 15°
7.62
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