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Part: BA7649A
Category:
Multimedia
Description:
Company: ROHM Electronics
Datasheet: Download BA7649A datasheet File size : 124 kB
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Datasheet text preview:
Multimedia ICs
Video signal switcher
BA7649A / BA7649AF
The BA7649A and BA7649AF are five-channel analog multiplexers (the IN5 pin can be used a mute input) designed for use in video cassette recorders. They feature large dynamic range, and wide operating frequency range, and have sync-tip inputs which are ideal for switching video signals. pp cations ·iAeolicassette recorders and televisions Vd
·)F5e-ainturuets/ 1-output switches. 1 p
2) Built-in mute (the IN5 pin can be use a mute input). 3) Sync-tip clamp inputs. 4) Wide operating supply voltage range (4.5V to 13.0V). 5) Low power consumption (48mW Typ.). A ·A7b6s4o9luAte maximum ratings (Ta = 25°C) B
Parameter Power supply voltage Allowable current Operating temperature Storage temperature Symbol VCC Pd Topr Tstg Limits 13.5 1100
6) Excellent frequency characteristics (10MHz, 0dB Typ.). 7) Wide dynamic range (3.5VP-P Typ.). 8) Low interchannel crosstalk ( 65dB Typ., f = 4.43MHz). 9) DIP / SOP 14 pin package.
Unit V mW °C °C
25 ~ + 75 55 ~ + 125
Reduced by 11.0mW for each increase in Ta of 1°C over 25°C.
BA7649AF
Parameter Power supply voltage Allowable current Operating temperature Storage temperature Symbol VCC Pd Topr Tstg Limits 13.5 450 25 ~ + 75 55 ~ + 125 Unit V mW °C °C
Reduced by 4.5mW for each increase in Ta of 1°C over 25°C when mounted on a 50mm × 50mm PCB board.
1
Multimedia ICs
BA7649A / BA7649AF
·Block diagram
GND GND VOUT VCC IN5 IN4 IN3 14 13 12 11 10 9 8
·Truth table
CTLA L (OPEN) L (OPEN) H H CTLB L (OPEN) H L (OPEN) H CTLC L (OPEN) L (OPEN) L (OPEN) L (OPEN) H OUT IN1 IN2 IN3 IN4 MUTE (IN5)
Logic
Either "L (open)" or "H".
5 CTL C 6 IN2 7 GND
D1
1 IN1
2 GND
3 CTL A
4 CTL B
·Equivalent circuits
CLAMP INPUT
IN Input clamp voltage 2.1V (VCC = 5V, Typ.) Input bias current 1µA [Typ.] Input impedance over 1M
D2 Vcc
OUTPUT
Vcc
Q1 R2 100 Q2
Q1
D1 OUT Output impedance 20 [Typ.] Output DC voltage 0.55V (VCC = 5V, Typ.)
0.8µA
100µA
2mA D2
CTLA / CTLB
Vcc R4 20k
CTLC
Vcc R4 30k
R1 CTLA / B 100
R2 Q3 50k R3 34k D2 CTLC
R1 100
R2 Q3 45k R3 29k
D2
2
Multimedia ICs
BA7649A / BA7649AF
·Electrical characteristics (unless otherwise noted, Ta = 25°C and VCC = 5V)
Parameter Operating voltage Supply current Maximum output level Voltage gain Interchannel crosstalk Frequency characteristics CTL pin switching level A CTL pin switching level B CTL pin switching level C Symbol VCC I CC V om GV CT Gf VTH-A V TH-B V TH-C Min. 4.5 -- 3.0 0.5 -- 3.0 1.0 1.0 1.0 Typ. -- 9.5 3.5 0 65 0 2.0 2.0 2.0 Max. 13.0 14.5 -- 0.5 -- 1.0 3.0 3.0 3.0 Unit V mA VP-P dB dB dB V V V Conditions -- -- f = 1kHz, THD = 0.5% f = 1MHz, VIN = 1.0VP-P f = 4.43MHz, VIN = 1.0VP-P f = 10MHz / 1MHz, VIN = 1.0VP-P -- -- --
Not designed for radiation resistance.
·Measurement circuit
1µF 50
~
1µF
50
~
1µF
50
~
OSC
OSC 1µF 1µF
OSC 1µF
2 SW5
1 SW4
2
1 SW3
2
1
VCC A
+
V
14 13 12 11 10 9 8 47µF 0.022µF
Logic
1
2
3
4
5
6
7
SW1 1 2 1
SW2 2
1µF OSC OSC
1µF
~
50
1µF
~
50
1µF
SW6 1 23 1
SW7 23 1
SW8 23
VCC
VCC
VCC
Fig. 1
3
Multimedia ICs
BA7649A / BA7649AF
·Measurement conditions
Parameter Current dissipation Maximum output level IN 1 IN 2 IN 3 IN 4 IN 5 IN 1 IN 2 IN 3 IN 4 IN 5 IN11N2 IN11N3 IN11N4 IN11N5 IN21N3 IN21N4 IN21N5 IN31N4 IN31N5 IN41N5 IN 1 IN 2 IN 3 IN 4 IN 5 CTLA CTLB CTLC Symbol ICC Vom Vom Vom Vom Vom GV GV GV GV GV CT CT CT CT CT CT CT CT CT CT Gf Gf Gf Gf Gf VTH VTH VTH Switch settings SW1 2 1 2 2 2 2 1 2 2 2 2 1 1 1 1 2 2 2 2 2 2 1 2 2 2 2 2 2 2 SW2 2 2 1 2 2 2 2 1 2 2 2 2 2 2 2 1 1 1 2 2 2 2 1 2 2 2 2 1 2 SW3 2 2 2 1 2 2 2 2 1 2 2 2 2 2 2 2 2 2 1 1 2 2 2 1 2 2 1 2 2 SW4 2 2 2 2 1 2 2 2 2 1 2 2 2 2 2 2 2 2 2 2 1 2 2 2 1 2 2 2 2 SW5 2 2 2 2 2 1 2 2 2 2 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 2 2 1 SW6 3 3 3 2 2 3 3 2 2 3 2 2 SW7 3 3 2 3 2 3 2 3 2 2 3 2 3 2 2 SW8 3 3 3 3 3 2 3 3 3 3 2 3 3 3 2 3 3 2 3 2 2 3 3 3 3 2 3 3 1 Measurement method Ammeter f = 1kHz, THD = 0.5% Note 1
Voltage gain
f = 1MHz, VIN = 1VP-P Note 2
Interchannel crosstalk
3 3 2 2 1 3 2 2 2
3 2 3 2 3 1
f = 4.43MHz, VIN = 1VP-P Note 3
Frequency characteristic
f = 10MHz, f = 1MHz, VIN = 1VP-P Note 4 Note 5
CTL pin switching level
Anywhere is possible.
Note 1: Connect a distortion meter to the output, and input a f = 1kHz sine wave. Adjust the output level until the output distortion is 0.5%. This output voltage at this time is the maximum output level Vom (VP-P). Note 2: Input a 1VP-P, 1MHz sine wave. The voltage gain is given by GV = 20 log (VOUT / VIN). Note 3: Input a 1VP-P, 4.43MHz sine wave. The interchannel crosstalk is given by CT = 20 log (VOUT / VIN). Note 4: Input 1VP-P, 1MHz and 10MHz sine waves. The frequency characteristic is given by Gf = 20 log (VOUT (f = 10MHz) / VOUT (f = 1MHz)). Note 5: Input a 1VP-P, 1MHz sine wave. Reduce the CTL pin voltage from VCC. The CTL pin switching level (VTH) is the CTL pin voltage at which the VOUT level drops below 20mVP-P.
·Electrical characteristic curves
10 9 OUTPUT VOLTAGE: VOUT (VP-P) VOLTAGE GAIN: Cf (dB) 8 7 6 5 4 3 2 1 0 0 1 2 3 4 5 6 7 8 9 10 4 100k 300k 1M 3M 10M 30M 100M VCC = 5V VCC = 12V VCC = 9V 2 CROSSTALK: CT (dB) 4
20
0
20
0
40
2
60
80 100k
300k
1M
3M
10M
30M
100M
INPUT VOLTAGE: VIN (VP-P)
FREQUENCY: f (Hz)
FREQUENCY: f (Hz)
Fig. 2 VIN vs. VOUT (f = 1kHz)
Fig. 3 Frequency characteristics
Fig. 4 Interchannel crosstalk
4
Multimedia ICs
BA7649A / BA7649AF
·External dimensions (Units: mm)
BA7469A
19.4 ± 0.3 6.5 ± 0.3 14 8 14 6.2 ± 0.3 4.4 ± 0.2
BA7649AF
8.7 ± 0.2 8
1 0.51Min. 4.25 ± 0.3
7 7.62
1.5 ± 0.1
1
7
3.2 ± 0.2
0.3 ± 0.1
0.11
1.27
0.4 ± 0.1
0.3Min. 0.15
2.54
0.5 ± 0.1 0° ~ 15°
DIP14
SOP14
0.15 ± 0.1
5
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BA-1 BA-2 BA-3 BA-4 BA-5 BA-6 BA-7 BA-8 BA-9 BA-10 BA-11 BA-12 BA-13 BA-14 BA-15 BA-16 BA-17 BA-18
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