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AD8842AR

Category:DAC digital-to-analog converter
Product Name:8-bit, 8-channel, four-quadrant multiply, CMOS TrimDAC
Manufacturers:ADI
Production Batch Number:15+
Encapsulation:24 ld SOP
Stock Status:There is stock
Stock Quantity:200
Minimum order quantity: 1
Details:

Product introduction

Advantages and features

Low cost
可替代8个电位计
50 kHz四象限乘法带宽
低零输出误差

8个独立通道
3-wire serial input
更新数据加载速率：500 kHz
输出摆幅：±3 V
中量程预设功能，0 V输出

Product Classification

numberDigital-to-analog converters(DAC)

Digital-to-analog converters(DAC)

Product details

AD8842内置8个通用型数字控制电压调节器件，TrimDAC®功能可以在新设计中取代机械式调整器功能。它非常适合对最高50 kHz带宽信号进行交流或直流增益控制。四象限乘法功能可以用于信号翻转和调制，这在视频垂直偏转电路中很常见。

AD8842内置8个电压输出数模转换器(DAC)，各DAC均有单独的电压输入。全新的电流传输器放大器设计可执行四象限乘法功能，由电流输出处的一个单端放大器操控数模控制器。与TrimDAC电路以前所用的电压开关DAC相比，这种方法改进了恒定输入电阻性能，从而无需添加输入缓冲放大器。

每个DAC均有各自的DAC寄存器以保持其输出状态，这些DAC寄存器由一个内部串行至并行移位寄存器更新，该移位寄存器从一个标准三线式串行输入数字接口加载数据。由12个数据位构成的数据字同步传输至串行输入寄存器，该数据字经过解码，前4位可确定需要载入后8位数据的DAC寄存器地址。利用串行寄存器相对端的串行数据输出引脚，就可以简单的菊花链形式将多个DAC连接，而无需额外的外部解码逻辑。

采用±5 V电源供电时，AD8842的功耗仅为95 mW。关于5 V单电源应用，请参考DAC-8841。AD8842与1 MHz乘法带宽器件DAC8840引脚兼容。它提供24引脚塑封DIP和表贴SOL-24两种封装。

andAD8842ARRelated ICs are:

Model	Manufacturers	lot number	encapsulation	illustrate
AD8842ARZ	ADI	15+	24 ld SOP	8-bit, 8-channel, four-quadrant multiply, CMOS TrimDAC
AD8842AR	ADI	15+	24 ld SOP	8-bit, 8-channel, four-quadrant multiply, CMOS TrimDAC

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ADI brand product recommendations

Model	Manufacturers	lot number	encapsulation	illustrate
AD8842ANZ	ADI	15+	24 ld PDIP	8-bit, 8-channel, four-quadrant multiply, CMOS TrimDAC
AD8522SUPPLY-REAL	ADI	15+	14 ld PDIP	+5 V, serial input, dual, 12-bit DAC
AD8522AR	ADI	15+	14 ld PDIP	+5 V, serial input, dual, 12-bit DAC
AD8522ANZ	ADI	15+	14 ld PDIP	+5 V, serial input, dual, 12-bit DAC
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AD7564BRZ-REEL	ADI	15+	28 ld SSOP	+3.3 V/+5 V, low power, quad, 12-bit CMOS DAC
AD7564BRZ	ADI	15+	28 ld SSOP	+3.3 V/+5 V, low power, quad, 12-bit CMOS DAC
AD7564BRSZ-REEL	ADI	15+	28 ld SSOP	+3.3 V/+5 V, low power, quad, 12-bit CMOS DAC
AD7564BRSZ	ADI	15+	28 ld SSOP	+3.3 V/+5 V, low power, quad, 12-bit CMOS DAC
AD7564BRS-REEL	ADI	15+	28 ld SSOP	+3.3 V/+5 V, low power, quad, 12-bit CMOS DAC
AD7564BRS	ADI	15+	28 ld SSOP	+3.3 V/+5 V, low power, quad, 12-bit CMOS DAC
AD7564BR-REEL	ADI	15+	28 ld SSOP	+3.3 V/+5 V, low power, quad, 12-bit CMOS DAC
AD7564BNZ	ADI	15+	28 ld SSOP	+3.3 V/+5 V, low power, quad, 12-bit CMOS DAC
AD7564BN	ADI	15+	28 ld SSOP	+3.3 V/+5 V, low power, quad, 12-bit CMOS DAC
AD7564ARZ-BREEL	ADI	15+	28 ld SSOP	+3.3 V/+5 V, low power, quad, 12-bit CMOS DAC
AD7564ARZ-B	ADI	15+	28 ld SSOP	+3.3 V/+5 V, low power, quad, 12-bit CMOS DAC
AD7564ARSZ-BREEL	ADI	15+	28 ld SSOP	+3.3 V/+5 V, low power, quad, 12-bit CMOS DAC
AD7564ARSZ-B	ADI	15+	28 ld SSOP	+3.3 V/+5 V, low power, quad, 12-bit CMOS DAC
AD7564ARS-BREEL	ADI	15+	28 ld SSOP	+3.3 V/+5 V, low power, quad, 12-bit CMOS DAC
AD7564ARS-B	ADI	15+	28 ld SSOP	+3.3 V/+5 V, low power, quad, 12-bit CMOS DAC