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參數(shù)資料
| 型號(hào)： | BA7655A |
| 廠商： | Rohm CO.,LTD. |
| 元件分類： | 音頻放大器 |
| 英文描述： | Dual Voltage-controlled Amplifier |
| 中文描述： | 雙電壓控制放大器 |
| 文件頁(yè)數(shù)： | 3/4頁(yè) |
| 文件大?。?/td> | 51K |
| 代理商： | BA7655A |
3
Multimedia ICs
BA7655A / BA7655AF
Electrical characteristics (unless otherwise noted , Ta = 25°C , VCC = 5.0V)
Not designed for radiation resistance.
Items marked with an asterisk are rerference values.
Parameter
Symbol
Min.
Typ.
Max.
Unit
Voltage
Conditions
Supply current
One channel
ICC1
—
4.6
7.0
mA
3.0
Set control voltage to 1V or less,
when only one channel is used.
Both channels
ICC2
—
7.8
12.0
Maximum output voltage
VMax.
2.5
2.8
—
VP-P
5.0
Frequency characteristics
Gf
– 1.0
0.0
dB
3.0
Minimum voltage gain
GVMin. – 8.0
– 6.0
– 4.0
dB
2.0
f = 1MHz
Maximum voltage gain
GVMax.
4.0
6.0
8.0
dB
5.0
f = 1MHz
Secondary harmonic distortion
2HD
—
– 40
—
dB
3.0
Audio distortion
AD
—
1.0
—
%
3.0
Muting output voltage
VMUTE
—
100
mV
1.0
Set control voltage to 1 V or less
V S / N
—
– 60
—
dB
3.0
A S / N
—
– 60
—
dB
3.0
Audio
S / N
Video
S / N
1.0
f = 1kHz, THD = 1%
f = 13MHz / 1MHz, VIN = 0.5VP-P
f = 5.0M, VIN = 1VP-P
f = 1kHz, VIN = 1VP-P
Circuit operation
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
POWER SAVE MODE
8
6
4
2
0
–2
–4
–6
–8
–10
–12
–14
Control voltage (V)
GAIN
(dB)
Fig. 1 Voltage gain vs.
control voltage characteristics
The gain of a VCA (voltage-controlled amplifier) can be
varied by an external control voltage. By varying the
control voltage from 2V to 5V (in the case of a 5V
power supply), the gain of the amplifiers in this IC can
be varied over the range -6dB to +6dB (see Figs. 1
and 2 below).
When only one of the two amplifiers is being used, by
setting the voltage on the CTL pin of the unused ampli-
fier to 1V or less, it can be put into Power Save Mode.
In Power Save Mode, the circuit current for the IC is
cut by 40%, and the output is muted.
VCA
IN
OUT
Control voltage
Fig. 2
CTL Voltage
Status
2V ~ 5V
Variable gain
1V or less
Power save
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BA7655A/AF | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:マルチメディアLSI |
| BA7655AF | 制造商:ROHM 制造商全稱:Rohm 功能描述:2ch Voltage Controlled Amplifier for Adjustment Video Signal Level |
| BA7655AF-E2 | 功能描述:特殊用途放大器 VOLT CONTRLLD AMP 8PIN RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| BA7657 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| BA7657F | 制造商:ROHM 制造商全稱:Rohm 功能描述:Broadband Triple Circuits Video Signal Switchers |
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