AD5621BKSZ-REEL7

更新时间： 2024-02-24 19:08:20

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
24页	466K
描述
2.7 V to 5.5 V, <100 Î¼A, 8-/10-/12-Bit nanoDAC, SPI Interface in LFCSP and SC70

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AD5621BKSZ-REEL7 数据手册

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AD5601/AD5611/AD5621

Data Sheet

APPLICATIONS

CHOOSING A REFERENCE AS POWER SUPPLY FOR

THE AD5601/AD5611/AD5621

BIPOLAR OPERATION USING THE

AD5601/AD5611/AD5621

The AD5601/AD5611/AD5621 come in tiny LFCSP and SC70

packages with less than a 100 µA supply current. Because of

this, the choice of reference depends on the application

requirements. For applications with space-saving requirements,

the ADR02 is recommended. It is available in an SC70 package

and has excellent drift at 9 ppm/°C (3 ppm/°C in the R-8 package)

and provides very good noise performance at 3.4 µV p-p in the 0.1

Hz to 10 Hz range.

The AD5601/AD5611/AD5621 have been designed for single-

supply operation, but a bipolar output range is also possible

using the circuit shown in Figure 52. The circuit in Figure 52

gives an output voltage range of 5 V. Rail-to-rail operation at

the amplifier output is achievable using an AD820 or OP295 as

the output amplifier.

R2 = 10kΩ

+5V

R1 = 10kΩ

Because the supply current required by the AD5601/AD5611/

AD5621 is extremely low, the parts are ideal for low supply

applications. The ADR395 voltage reference is recommended in

this case. It requires less than 100 µA of quiescent current and

can, therefore, drive multiple DACs in one system, if required. It

also provides very good noise performance at 8 µV p-p in the

0.1 Hz to 10 Hz range.

AD820/

OP295

+5V

OUT

10µF

0.1µF

AD5601/AD5611/

AD5621

–5V

3-WIRE

SERIAL

INTERFACE

Figure 52. Bipolar Operation with the AD5601/AD5611/AD5621

ADR395

The output voltage for any input code can be calculated as

R1+ R2











 

 



















SYNC

3-WIRE

SERIAL

INTERFACE

V_OUT= V_DD

−V

= 0V TO 5V

OUT

 

2^N





AD5601/AD5611/

AD5621

SCLK

SDIN





where D represents the input code in decimal (0 – 2^N).

With V_DD= 5 V, R1 = R2 = 10 kΩ

Figure 51. ADR395 as Power Supply to the AD5601/AD5611/AD5621

10 × D

2^N

Some recommended precision references for use as supplies to

the AD5601/AD5611/AD5621 are listed in Table 7.









V_OUT

− 5 V





This is an output voltage range of 5 V, with 0x0000 corre-

sponding to a −5 V output and 0x3FFF corresponding to a

+5 V output.

Table 7. Precision References for the AD5601/AD5611/AD5621

Initial

Accuracy Temp Drift

0.1 Hz to 10 Hz

Part No.

ADR435

ADR425

ADR02

ADR395

(mV max) (ppm/°C max)

Noise (µV p-p typ)

3 (R-8)

3 (SC70)

9 (TSOT-23)

3.4

Rev. G | Page 18 of 24

1...15 16 171819 20 21...24

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与AD5621BKSZ-REEL7相关器件

型号	品牌	描述	获取价格	数据表
AD5622	ADI	2.7 V to 5.5 V, <100 uA, 8-/10-/12-Bit nanoDACs with	获取价格
AD5622ACPZ-2-RL7	ADI	2.7 V to 5.5 V, nanoDAC® with I<sup>2</sup>C Compatible Interface, Tin	获取价格
AD5622AKSZ-2	ADI	IC SERIAL INPUT LOADING, 6 us SETTLING TIME, 12-BIT DAC, PDSO6, LEAD FREE, PLASTIC, MO-203	获取价格
AD5622AKSZ-2500RL7	ADI	2.7 V to 5.5 V, <100 uA, 8-/10-/12-Bit nanoDACs with	获取价格
AD5622AKSZ-2REEL7	ADI	2.7 V to 5.5 V, <100 uA, 8-/10-/12-Bit nanoDACs with	获取价格
AD5622BKSZ-2	ADI	IC SERIAL INPUT LOADING, 6 us SETTLING TIME, 12-BIT DAC, PDSO6, LEAD FREE, PLASTIC, MO-203	获取价格

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