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DAC8574

更新时间： 2024-11-23 22:50:43
品牌 Logo 应用领域
德州仪器 - TI 转换器输出元件
页数 文件大小 规格书
40页 942K
描述
QUAD, 16-BIT, LOW-POWER, VOLTAGE OUTPUT, I2C INTERFACE DIGITAL-TO-ANALOG CONVERTER

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DAC8574 数据手册

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DAC8574  
www.ti.com  
SLAS377A–JANUARY 2003–REVISED JUNE 2003  
QUAD, 16-BIT, LOW-POWER, VOLTAGE OUTPUT,  
I2C INTERFACE DIGITAL-TO-ANALOG CONVERTER  
FEATURES  
DESCRIPTION  
•
•
•
•
•
•
Micropower Operation: 950 µA at 5 V VDD  
Power-On Reset to Zero  
+2.7 V to +5.5 V Analog Power Supply  
16-Bit Monotonic  
Settling Time: 10µs to ±0.003% FSR  
I2C™ Interface Up to 3.4 Mbps  
The DAC8574 is a low-power, quad channel, 16-bit  
buffered voltage output DAC. Its on-chip precision out-  
put amplifier allows rail-to-rail output swing to be  
achieved. The DAC8574 utilizes an I2C compatible two  
wire serial interface supporting high-speed interface  
mode with address support of up to sixteen DAC8574 s  
for a total of 64 channels on the bus.  
•
•
Data Transmit Capability  
On-Chip Output Buffer Amplifier, Rail-to-Rail  
Operation  
Double-Buffered Input Register  
Address Support for up to Sixteen DAC8574s  
The DAC8574 requires an external reference voltage  
to set the output range of the DAC. The DAC8574  
incorporates a power-on-reset circuit that ensures that  
the DAC output powers up at zero volts and remains  
there until a valid write takes place to the device. The  
DAC8574 contains a power-down feature, accessed  
via the internal control register, that reduces the current  
consumption of the device to 200 nA at 5 V.  
•
•
•
Synchronous Update Support for up to 64  
Channels  
•
•
Operation From -40°C to 105°C  
Small 16 Lead TSSOP Package  
The low power consumption of this part in normal  
operation makes it ideally suited to portable battery  
operated equipment. The power consumption is less  
than 5 mW at VDD = 5 V reducing to 1 µW in  
power-down mode.  
APPLICATIONS  
•
Process Control  
The DAC8574 is available in a 16-lead TSSOP pack-  
age.  
•
•
•
•
Data Acquisition Systems  
Closed-Loop Servo Control  
PC Peripherals  
Portable Instrumentation  
V
DD  
IOV  
DD  
V H  
REF  
Data  
Buffer A  
DAC  
Register A  
DAC A  
DAC D  
V
A
OUT  
V
V
B
C
OUT  
OUT  
Data  
Buffer D  
DAC  
Register D  
V
OUT  
D
18  
SCL  
SDA  
Power-Down  
Control Logic  
Buffer  
Control  
Register  
Control  
2
I C Block  
Resistor  
Network  
8
A0  
A1  
GND  
A2  
A3 LDAC  
V L  
REF  
I2C is a trademark of Philips Corporation.  
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.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily in-  
cludetestingofallparameters.  
Copyright © 2003, Texas Instruments Incorporated  
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