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BA8400FV Datasheet(PDF) 7 Page - Rohm

Part No. BA8400FV
Description  CTL recording / playback amplifier for VHS VCRs
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Maker  ROHM [Rohm]
Homepage  http://www.rohm.com
Logo ROHM - Rohm

BA8400FV Datasheet(HTML) 7 Page - Rohm

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7
Video ICs
BA8400FV
Parameter
Symbol
Monitor
Notes
Switch position
SW
1
SW
2
SW
3
SW
5
SW
9
SW
10
SW
12
SW
13a
SW
13b
Circuit current
〈AGC amplifier〉
AGC amplifier gain
Input bias voltage
Pin 5 input resistance
AGC control sensitivity
Output amplitude
〈Hysteresis amplifier〉
Hysteresis width
CTLOUT output voltage H
CTLOUT output voltage L
〈REC amplifier〉
Recording current 5
Recording current 6
Max. output voltage "H"
Max. output voltage "L"
Input threshold voltage
Input resistance
〈REC / PB switch〉
Threshold voltage
REC to PB switching time
Am14
Vm13
Vm8
Vm5
13pin
13pin
Vm1
Vm1
Vm1
Am56
Am56
Vm1
Vm1
Vm3
Vm3
Vm2
1pin
a
a
a
a
a
a
a
c
c
a
a
c
c
a
a
a
a
a
a
a
b
a
a
a
a
a
b
b
b
b
b
b
c
ba
a
a
a
b
a
a
a
a
a
b
a
b
a
c
d
a
a
a
c
a
b
c
c
a
a
a
a
a
a
a
a
a
a
c
a
b
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
b
a
a
b
b
a
a
a
a
a
a
a
a
a
a
a
ON
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
b
b
b
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
1. f = 300Hz,
VIN = 50mVP-P
3. f = 300Hz,
VIN = 0.15 / 1.0VP-P
4. f = 300Hz,
VIN = 300mVP-P
2.
5.
IO = – 0.5mA, Vs13 = 1.5V
IO = + 0.5mA, Vs13 = 0V
6.
6.
IO = – 0.5mA
IO = + 0.5mA
ICC
GVagc
VIB8
ZIN5
∆AGC / V
VAGC
∆HysV
VOHP
VOLP
Irec5
Irec6
VOHR
VOLR
Vth3
ZIN3
Vth2
TR-P
Measurement conditions (unless otherwise noted, Ta = 25°C and VCC = 3V)
Measurement method
∗1 Input a sine wave of f = 300Hz to pin 5, and measure the output amplitudes on pins 10 and 13 (Vo10 and Vo13).
The AGC gain is given by: Gvagc = 20log (Vo13 / Vo10) [dB].
∗2 Measure the output voltages Vo0 and Vo.5 on pin 5 when currents of Is5 = 0, and Is5 = 0.5mA are applied.
The input resistance is given by: ZIN5 = {0.0005 / (Vo.5 Vo0) 1 / 400} –1 [
Ω]
∗3 Input a sine wave of f = 300Hz to pin 5. Adjust the input level until the output amplitude on pin 10 is 0.15VP-P and 1.0VP-P, and measure the correspond-
ing output amplitudes on pin 13 (Vo0.15 and Vo1.0).
The AGC control sensitivity is given by:
∆AGC / V = 20log (Vo1.0 / Vo0.15) [dB].
∗4 Input a sine wave of f = 300Hz to pin 5. Adjust the input level until the output amplitude on pin 10 is 300mVP-P.
Measure the output amplitude on pin 13.
∗5 With pin 13 floating, measure the output voltage Vocent.
Increase Vs13 from 0V, and record VINH as the Vs13 voltage when the pin 1 output exceeds 2.8V.
Decrease Vs13 from 1.5V, and record VINL as the Vs13 voltage when the pin 1 output goes below 0.2V.
High-side hysteresis width
∆HysVH = VINH Vocent [VP-P]
Low-side hysteresis width
∆HysVL = VINL Vocent [VP-P]
∗6 Measure the currents IIN2.7 and IIN3.0 on pin 3 when voltages Vs3 of 2.7V and 3.0V respectively are applied.
The input resistance is given by: ZIN3 = 0.3 / (IIN3.0 IIN2.7) [
Ω]
∗7 Input a square wave of 300Hz, VIN = 20mVP-P to pin 5, and measure the time that it takes CTLOUT to be output after pin 2 goes from VCC to 0V.


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