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Part: BA7632AF
Category:
Multimedia
Description:
Company: ROHM Electronics
Datasheet: Download BA7632AF datasheet File size : 124 kB
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Datasheet text preview:
Multimedia ICs
Video switch for CANAL-Plus decoder
BA7632AF
The BA7632AF is an audio-switching ICs for decoders for scrambled pay channels used in France and other contries. The ICs include a five-input multiplexer, a four-input multiplexer and a two-input multiplexer, and allow decoder audio switching to be done with a single IC. When used in combination with the BA7630S common logic control can be used for audio and video switching. The BA7632AF has larger termination resistors on the inputs than the BA7631 and BA7631F. pp cations ·iAeolicassette recorders Vd ur s ·)FAelattheeaudio-switching functions required for SECAM 1l CANNAL-plus decoder integrated onto one chip. 2) Inputs terminated with 140k resistors. 3) Built-in output buffer.
4) Wide supply voltage range (4.5V to 13.0V). 5) Low total harmonic distortion (Max. 0.005% Typ.). 6) Wide dynamic range (3.6Vrms, VCC = 12V). 7) Same control logic as for the BA7630S can be used.
·Absolute maximum ratings (Ta = 25°C)
Parameter Applied voltage Power dissipation Operating temperature Storage temperature Symbol VCC Pd Topr Tstg Limits 13.5 500 25 ~ + 70 55 ~ + 125 Unit V mV °C °C
Reduced by 5mW for each increase in Ta of 1°C over 25°C.
·Recommended operating conditions (Ta = 25°C)
Parameter Power supply voltage Symbol VCC Limits 4.5 ~ 13.0 Unit V
1
Multimedia ICs
BA7632AF
·Block diagram
OUT1 1 BF BF 16 OUT2
CTL4
2
1 2
15
CTL5
IN5
3
3 4
SW2
14
CTL3
VCC
4 1
BF
13
OUT3
IN4
5
2 3
12
CTL2
GND2
6
SW1
4 5
11
IN3
IN1
7
1 2 SW3
10
GND1
CTL1
8
9
IN2
BA7632AF
·OTUruTt1h table SW1
CTL1 L L H H CTL2 L H L H CTL5 L L L L H SELECT IN1 IN2 IN3 MUTE IN5
·Pin descriptions
Pin No. 1 2 3 4 5 6 7 8 CTL5 L L H H SELECT IN1 IN3 IN5 IN3 9 10 11 12 13 14 SELECT IN2 IN4 15 16 Pin Name OUT1 CTL4 IN5 VCC IN4 GND2 IN1 CTL1 IN2 GND1 IN3 CTL2 OUT3 CTL3 CTL5 OUT2 Output 1 Control 4 Input 5 Power supply Input 4 GND (GND1 common) Input 1 Control 1 Input 2 GND (GND2 common) Input 3 Control 2 Output 3 Control 3 Control 5 Output 2 Function
Don't care
OUT2 SW2
CTL3 L H L H
OUT3 SW3
CTL4 L H
2
Multimedia ICs
BA7632AF
·Input / output circuits
VCC
VCC
1 50
2 8 12 14 15
14k 10k 36k 30k
1.8mA
3, 5, 7, 9, 11
VCC
VCC 100
30µA
25 1.8mA
13 16
6.0V
140k 125µA
·Electrical characteristics (unless otherwise noted, Ta = 25°C and VCC = 12V)
Parameter Recommended operating voltage Supply current Maximum output level Voltage gain Total harmonic distortion Interchannel crosstalk Input conversion noise voltage CTL switch level Input impedance
Not designed for radiation resistance.
Symbol VCC ICC Vom GV THD CTM VMin. VTH ZIN
Min. 4.5 -- 3.1 0.5 -- -- -- 1.0 110
Typ. 12.0 14.9 3.6 0 0.005 75 20.0 2.0 140
Max. 13.0 24.0 -- 0.5 0.1 60 40.0 3.0 165
Unit V mA Vrms dB % dB µ Vrms V k
Conditions -- -- f = 1MHz, THD = 0.5% f = 1kHz, VIN = 3.0dBm f = 1kHz, VIN = 3.0dBm f = 10kHz, VIN = 3.0dBm 30kHz LPF, Rg = 2.2k -- --
·hCeiruit operationmakes it easy to construct a decoder T BA7632AF
f o r the scrambled pay channels. They have been d e s i g n e d specifically for audio signal decoding. As shown in the application examples in Figs. 1 and 2, t h e r e are inputs for TV, VCR, decoder, and AUX, to
cover a wide range of applications. When the AUX input is not used, by setting CTL5 to "L", the system c o n s t r u c t i o n becomes the same as that of the BA7630S, and the BA7630S switching logic can be used as is.
3
Multimedia ICs
BA7632AF
·Application examples
to VTR IN CTL4 for SW3 from EXT OUT
22µF
+
22µF 1 2 BF 1 BF 16 15 SW2 14 BF 13 12 22µF 11 1 7 2 8 SW3 9 10 22µF
+ + +
to DECODER IN CTL5 for SW2 CTL3 for SW2 to TV IN CTL2 for SW1 from TV OUT
22µF
+
2 3
VCC 47µ
3 4 4 1 2 5 SW1 6 3 4 5
+
22µF from VTR OUT
+
from VTR TUNER OUT CTL1 for SW1
22µF +
from DECODER OUT
Fig.1
VCR TUNER IN OUT 22µF
+
7 SW1 1 9 2 3 4 5 BF 1 22µF
+
DECODER
IN OUT
22µF
+
22µF
+
11
8
CTL1
22µF
+
3
12
CTL2
22µF
+
5
14
CTL3
TV
IN OUT
1 2 3 4
SW2
15
CTL5 22µF
BF
16
+
(AUX) EXT
OUT
1 SW3 BF 2 13
22µF
+
2
CTL4
Fig.2
4
Multimedia ICs
BA7632AF
·Electrical characteristic curves
TOTAL HARMONIC DISTORTION (%) 0.100 MAX OUTPUT LEVEL (Vrms) 5.0 4.0
3.0
0.010 VCC = 12.0 (V) f = 1 (kHz)
2.0 VCC = 12 (V) f = 1 (kHz) THD = 0.5 (%)
1.0
0.001 0
1.0
2.0
3.0
4.0
0
5
10
15
INPUT VOLTAGE (Vrms)
POWER SUPPLY VOLTAGE (V)
Fig. 3 Distortion characteristics
Fig. 4 Power supply voltage vs. dynamic range characteristics
·External dimensions (Units: mm)
10.0 ± 0.2 16 6.2 ± 0.3 4.4 ± 0.2 9
1 1.5 ± 0.1
8
0.11
1.27
0.4 ± 0.1
0.3Min. 0.15
SOP16
0.15 ± 0.1
5
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