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BA7746S PDF预览

BA7746S

更新时间: 2024-02-17 03:51:46
品牌 Logo 应用领域
罗姆 - ROHM 放大器录像机
页数 文件大小 规格书
12页 143K
描述
VCR Hi-Fi audio signal REC / PB amplifier

BA7746S 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:DIP
包装说明:SDIP-24针数:24
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.33.00.01风险等级:5.62
商用集成电路类型:AUDIO AMPLIFIER增益:79 dB
JESD-30 代码:R-PDIP-T24JESD-609代码:e3/e2
长度:22.9 mm信道数量:2
端子数量:24最高工作温度:70 °C
最低工作温度:-10 °C封装主体材料:PLASTIC/EPOXY
封装代码:SDIP封装等效代码:SDIP24,.3
封装形状:RECTANGULAR封装形式:IN-LINE, SHRINK PITCH
峰值回流温度(摄氏度):260电源:5 V
认证状态:Not Qualified座面最大高度:4.25 mm
子类别:Audio/Video Amplifiers最大压摆率:90 mA
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):4.5 V
表面贴装:NO技术:BIPOLAR
温度等级:COMMERCIAL端子面层:TIN/TIN COPPER
端子形式:THROUGH-HOLE端子节距:1.778 mm
端子位置:DUAL处于峰值回流温度下的最长时间:10
宽度:7.62 mmBase Number Matches:1

BA7746S 数据手册

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Video ICs  
VCR Hi-Fi audio signal REC / PB  
amplifier  
BA7746S / BA7746FS  
The BA7746S and BA7746FS contains the recording and playback amplifiers required for Hi-Fi VCR signal process-  
ing. The recording system uses a constant-current amplifier with AGC to eliminate the need to adjust the recording  
current, and ensure stable operation as the head wears. The IC also features REC MUTE and OVER REC functions.  
The playback system has a high-gain preamplifier, a low- offset head switch, VCA, and an EP-gain amplifier.  
In addition, all functions operate off a single 5V supply, and a H / L control system eliminates the need for special  
power supplies for the recording and playback systems. The IC has low power consumpution, and comes in a com-  
pact 32-pin SSOP-A package that requires little area on the PCB. It will improve the reliability and performance of  
your designs while reducing external component requirements.  
Applications  
VCRs  
Features  
1) The low-noise playback amplifier has a total gain of  
79dB (Typ.). Designed for VHS-band operation with  
low external parts count. It has two built-in circuits  
for Hi-Fi VCR operation.  
7) Built-in recording level AGC eliminates the need to  
adjust recording current.  
8) Built-in low-pass filter limits the input bandwidth of  
the recording amplifier.  
2) The circuit has been designed to suppress head-  
switching noise.  
9) Built-in OVER REC recording current amplifier  
function and REC MUTE function that stops record-  
ing output.  
3) Built-in EP / SP gain switching function that boosts  
the playback gain by 5dB.  
10) Low power consumption. Operates off a single 5V  
power supply.  
4) Built-in VCA for easy playback output adjustment.  
5) High-output recording amplifier for audio FM record-  
ing.  
11) Record / playback switching can be done directly  
via the system controller, and consumes littele  
power.  
6) Constant-current drive povides stable recording  
characteristics when the load (head impedance) is  
fluctuating.  
12) Possible to construct a high-performance audio  
system by pairing this chip with a Hi-Fi-audio signal  
processing IC.  
Absolute maximum ratings (Ta = 25°C)  
Parameter  
Symbol  
VCC  
Limits  
7.0  
Unit  
V
Power supply voltage  
1
BA7746S  
BA7746FS  
1050  
800  
mW  
mW  
°C  
Power  
dissipation  
Pd  
2
Topr  
Tstg  
– 10 ~ + 70  
Operating temperature  
Storage temperature  
– 55 ~ + 125  
°C  
1 When mounted on a 90mm × 50mm × 1.6mm glass epoxy board, reduced by 10.5mW for each increase in Ta of 1°C over 25°C.  
2 When mounted on a 90mm × 50mm × 1.6mm glass epoxy board, reduced by 8mW for each increase in Ta of 1°C over 25°C.  
1

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