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DAC122S085

更新时间： 2024-09-28 11:11:43
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德州仪器 - TI 转换器数模转换器
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30页 1057K
描述
具有轨到轨输出的 12 位微功耗双路数模转换器

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DAC122S085 数据手册

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DAC122S085  
www.ti.com  
SNAS361E –MAY 2006–REVISED MARCH 2013  
DAC122S085 12-Bit Micro Power DUAL Digital-to-Analog Converter with Rail-to-Rail  
Output  
Check for Samples: DAC122S085  
1
FEATURES  
DESCRIPTION  
The DAC122S085 is a full-featured, general purpose  
DUAL 12-bit voltage-output digital-to-analog converter  
(DAC) that can operate from a single +2.7V to 5.5V  
supply and consumes 0.6 mW at 3V and 1.6 mW at  
5V. The DAC122S085 is packaged in 10-lead SON  
and VSSOP packages. The 10-lead SON package  
makes the DAC122S085 the smallest DUAL DAC in  
its class. The on-chip output amplifier allows rail-to-  
rail output swing and the three wire serial interface  
operates at clock rates up to 40 MHz over the entire  
supply voltage range. Competitive devices are limited  
to 25 MHz clock rates at supply voltages in the 2.7V  
to 3.6V range. The serial interface is compatible with  
standard SPI™, QSPI, MICROWIRE and DSP  
interfaces.  
23  
•
Ensured Monotonicity  
•
•
•
•
•
•
•
Low Power Operation  
Rail-to-Rail Voltage Output  
Power-on Reset to 0V  
Simultaneous Output Updating  
Wide power supply range (+2.7V to +5.5V)  
Industry's Smallest Package  
Power Down Modes  
APPLICATIONS  
•
•
•
•
Battery-Powered Instruments  
Digital Gain and Offset Adjustment  
Programmable Voltage & Current Sources  
Programmable Attenuators  
The reference for the DAC122S085 serves all four  
channels and can vary in voltage between 1V and VA,  
providing the widest possible output dynamic range.  
The DAC122S085 has a 16-bit input shift register that  
controls the outputs to be updated, the mode of  
operation, the powerdown condition, and the binary  
input data. Both outputs can be updated  
simultaneously or individually depending on the  
setting of the two mode of operation bits.  
KEY SPECIFICATIONS  
•
•
•
•
•
•
•
Resolution: 12 Bits  
INL: ±8 LSB (Max)  
DNL: +0.7 / -0.5  
Settling Time 8.5 µs (Max)  
Zero Code Error: +15 mV (Max)  
Full-Scale Error: -0.75 %FS (Max)  
Supply Power  
A power-on reset circuit ensures that the DAC output  
powers up to zero volts and remains there until there  
is a valid write to the device. A power-down feature  
reduces power consumption to less than a microWatt  
with three different termination options.  
–
–
Normal: 0.6 mW (3V) / 1.6 mW (5V) (Typ)  
The low power consumption and small packages of  
the DAC122S085 make it an excellent choice for use  
in battery operated equipment.  
Power Down: 0.3 µW (3V) / 0.8 µW (5V)  
(Typ)  
The DAC122S085 is one of a family of pin compatible  
DACs, including the 8-bit DAC082S085 and the 10-bit  
DAC102S085. The DAC122S085 operates over the  
extended industrial temperature range of −40°C to  
+105°C.  
Pin Configuration  
V
V
A
1
2
3
4
5
10 SCLK  
1
2
3
4
5
10  
9
SCLK  
SYNC  
A
V
V
V
OUTA  
OUTA  
OUTB  
NC  
9
8
7
6
SYNC  
V
D
IN  
OUTB  
D
IN  
8
SON  
VSSOP  
V
V
REFIN  
7
6
REFIN  
NC  
NC  
NC  
GND  
GND  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
SPI is a trademark of Motorola, Inc..  
2
3
All other trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2006–2013, Texas Instruments Incorporated  
1234567...30

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DAC122S085 替代型号

型号 品牌 替代类型 描述 数据表
DAC082S085 TI

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DAC102S085 TI

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 		具有轨到轨输出的 12 位微功耗双路数模转换器 | DGS | 10 | -40 to 1
DAC122S085CIMMX NSC

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 		12-Bit Micro Power DUAL Digital-to-Analog Converter with Rail-to-Rail Output
DAC122S085CIMMX/NOPB NSC

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DAC122S085CIMMX/NOPB TI

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 		具有轨到轨输出的 12 位微功耗双路数模转换器 | DGS | 10 | -40 to 1
DAC122S085CISD NSC

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 		12-Bit Micro Power DUAL Digital-to-Analog Converter with Rail-to-Rail Output
DAC122S085CISD/NOPB TI

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 		具有轨到轨输出的 12 位微功耗双路数模转换器 | DSC | 10 | -40 to 1

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