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參數(shù)資料
| 型號(hào)： | BA8400 |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | CTL recording / playback amplifier for VHS VCRs |
| 中文描述： | CTL錄音/于VHS錄像機(jī)播放放大器 |
| 文件頁(yè)數(shù)： | 2/9頁(yè) |
| 文件大小： | 124K |
| 代理商： | BA8400 |
2
Video ICs
BA8400FV
Pin descriptions
Pin No.
Pin name
Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CTL OUT
(CTL pulse output)
RECHPB
(record / play switch)
RECIN
(REC CTL pulse input)
GND
CTL +
(CTL head “+” input)
CTL –
(CTL head “–” input)
RECPBGND
BIAS
(bias)
IN –
(playback amplifier input)
MONIOUT
(playback amplifier output)
AGC
(AGC time constant)
HysBIAS
(hysteresis amplifier
center level)
FILTER
(high-frequency
noise filter)
V
CC
CTL pulse output.
High output level approx. V
CC
– 0.05V, I
O
= + 0.5mA
Low output level approx. 0.05V, I
O
= – 0.5mA
Switch input pin for the record / playback amplifiers.
High input: REC mode
Low input: PB mode
Threshold voltage: approx. 1 / 2V
CC
CTL pulse input pin for recording.
Threshold voltage: approx. 1 / 2V
CC
Power, REC / PB SW, CTL output buffer ground pin.
Ground pin for the REC and playback amplifiers.
Feedback input pin for the playback amplifier.
Playback amplifier output monitor pin.
Output dynamic range is the DC level
±
Vf.
Set the time constant after considering the transient response of the playback
mode switching.
AGC detect level VdetAGC = 0.47V
CC
[V] (approx.)
Playback amplifier output amplitude VAGC = 2
×
(VdetAGC – HysVcent) [V
P-P
]
Connection pin for the bypass capacitor for the hysteresis amplifier center level.
Connect a decoupling capacitor close to the pin.
Pin for connection of high-frequency noise filter for AGC amplifier output for
playback CTL pulse. Also, input pin for the hysteresis amplifier. Hysteresis
amplifier center voltage HysVcent = 0.27Vcc [V] approx.
High-side hysteresis width
HysVH = 0.367V
CC
– HysVcent [V]
Low-side hysteresis width
HysVL = 0.173V
CC
– HysVcent [V]
Bias pin for the playback amplifier.
Bias voltage: VIB8 = 0.15V
CC
+ 1.3V (approx.)
When recording: CTL head positive-side recording current.
When playing: input pin for the playback CTL pulse.
When recording: CTL head negative-side recording current.
When playing: bias pin for the playback CTL pulse input.
Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Limits
Unit
Power supply voltage
Power dissipation
Operating temperature
Storage temperature
Reduced by 4.5mW for each increase in Ta of 1
°
C over 25
°
C.
Recommended operating conditions (Ta = 25°C)
Parameter
V
CC
Pd
Topr
Tstg
8.0
450
– 25 ~ + 75
– 55 ~ + 125
V
mW
°
C
°
C
Symbol
Limits
Unit
Applied voltage
V
CC
2.7 ~ 3.5
V
s
Not designed for radiation resistance.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| BA8400FV | 制造商:ROHM 制造商全稱(chēng):Rohm 功能描述:CTL recording / playback amplifier for VHS VCRs |
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