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PDF BH7659FS Data sheet ( Hoja de datos )
| Número de pieza | BH7659FS | |
| Descripción | Input selector for high resolution displays | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Multimedia ICs
BH7659S / BH7659FS
Input selector for high resolution
displays
BH7659S / BH7659FS
The BH7659S / BH7659FS are input signal switching ICs developed for high resolution displays that have three fc =
250MHz wide-band video switching circuits for RGB video signal switching and four CMOS analog switching circuits for
switching between HD and VD signals as well as I2C bus signals (SDA and SCL).
zApplications
High-resolution displays and high-definition TVs
zFeatures
1) Operates with a 5V power supply voltage.
2) Built-in, wide-band switching circuit for RGB
switching (fc = 250MHz).
3) SDA and SCL as well as HD and VD signal switching
is possible.
4) Built-in power save function.
zAbsolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Limits
Power supply voltage
VCC
8.0
Power dissipation
1300∗1 (SDIP32)
Pd 800∗2 (SSOP−A32)
Operating temperature
Topr
– 25 ~ + 75
Storage temperature
Tstg
– 55 ~ + 125
1 Reduced by 13mW for each increase in Ta of 1˚C over 25˚C.
∗∗2 Reduced by 8.0mW for each increase in Ta of 1˚C over 25 ˚C.
Unit
V
mW
°C
°C
zRecommended operating conditions (Ta = 25°C)
Parameter
Operating power supply voltage
Not designed for radiation resistance.
Symbol
VCC
Min.
4.5
Typ.
5.0
Max.
5.5
Unit
V
1 page  
Multimedia ICs
BH7659S / BH7659FS
zElectrical characteristics (unless otherwise noted, VCC=5.0V, Ta = 25°C)
Parameter
〈Overall device〉
Circuit current
Circuit current during power save
〈R, G, and B video switches〉
Voltage gain
Interchannel relative gain
Interblock relative gain
Output dynamic range
〈CMOS analog switch〉
On-resistance
Interchannel on-resistance difference
Interchannel crosstalk
Transmission delay time
〈Control block〉
High level voltage
Low level voltage
Symbol Min.
ICC 15
IPSV
7
GV
∆GVC
∆GVB
VOM
– 1.0
– 0.5
– 0.5
2.6
RON
∆RON
CT
tD
—
—
—
—
VH 3.5
VL —
Typ.
25
14
– 0.5
0
0
—
200
20
– 70
20
—
—
Max.
35
22
0
0.5
0.5
—
400
40
– 55
—
—
1.5
Unit Conditions
mA —
mA PS = “H”
dB f = 10MHz
dB f = 10MHz
dB f = 10MHz
VP-P f = 1kHz
Ω VIN = 2.5V
Ω VIN = 2.5V
dB f = 150kHz
ns RL = 10Ω, CL = 50pF
V—
V—
zGuaranteed design parameters (unless otherwise noted, VCC=5.0V, Ta = 25°C)
Parameter
Symbol Min. Typ. Max. Unit
〈R, G, and B video switches〉
Frequency characteristics 1
Frequency characteristics 2
Interchannel relative frequency
characteristics
f1
– 3.0
0
+ 1.0
dB
f2 – 6.0 – 3 – 1.0 dB
∆fC – 0.5 0
0.5 dB
Interblock relative frequency
characteristics
Interchannel crosstalk 1
Interchannel crosstalk 2
Interblock crosstalk 1
Interblock crosstalk 2
∆fB
CTC1
CTC2
CTB1
CTB2
– 0.5
0
0.5
— – 50 – 35
— – 30 – 15
— – 50 – 35
— – 30 – 15
dB
dB
dB
dB
dB
Conditions
f = 50MHz
f = 250MHz
f = 50MHz
f = 50MHz
f = 50MHz
f = 250MHz
f = 50MHz
f = 250MHz
5 Page 
Multimedia ICs
zApplication example
Input A
R
G
B
VD
SDA
SCA
HD
R4
R4
R4
R4
5. 1
5. 1
5. 1
5. 1
Input B
R
G
B
VD
SDA
R4
R4
SCA
HD
R4
R4
5. 1
5. 1
5. 1
5. 1
BH7659S / BH7659FS
C1 VCC
R2
C2
R1
C1 VCC
R2
C2
R1
C1 VCC
R2
C2
R1
C1 VCC
R2
C2
R1
R4
PS:H
C3
C1 VCC
VCC R1 C2
R2
+
C1 C2
R1
C1 VCC
R2
C2
CTL
IN A: H
IN B: L
R4
C3
R3
1
A
2
B
3
A
4
B
5
A
6
B
7
8
POWER
SAVE
9
10
11
12 N. C.
13 CTL
A
14
R3
15
B
VD OUT
R3
16
R
G
B
A
B
A
VCC
32
+
C1 C2
31
Ro
R OUT
VCC
30
+
C1 C2
29
Ro
G OUT
VCC
28
+
C1 C2
27
Ro
B OUT
26
R3
HD OUT
25
R3
24
R3
SCL IO
23
R3
22
R3
N. C. 21
B
20
R3
A
19
R3
B
18
R3
SDA IO
17
R3
Note: The Ro value differs depending on the load capacitance.
Set so that the frequency characteristics are flat.
R1 = 75Ω
C1 = 0.01µF
R2 = 47Ω
C1 = 47µF
R3 = 100Ω C1 = 0.1µF
R4 = 1.2kΩ
Fig.3
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet BH7659FS.PDF ] | |
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