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參數資料
| 型號： | DAC757IDGSR |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | QUAD, 12-BIT, LOW-POWER, VOLTAGE OUTPUT, I2C INTERFACE DIGITAL-TO-ANALOG CONVERTER |
| 中文描述： | 四，12位，低功耗，電壓輸出，I2C接口的數字模擬轉換器 |
| 文件頁數： | 1/31頁 |
| 文件大小： | 783K |
| 代理商： | DAC757IDGSR |
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www.ti.com
Resistor
Network
8
14
Data
Buffer A
DAC
Register A
Data
Buffer D
DAC
Register D
DAC A
DAC D
Buffer
Control
Register
Control
Power-Down
Control Logic
V
OUT
A
V
OUT
B
V
OUT
C
V
OUT
D
A0
A1
GND
I
2
C Block
SCL
SDA
V
DD
DAC7574
SLAS375–JUNE 2003
QUAD, 12-BIT, LOW-POWER, VOLTAGE OUTPUT,
I
2
C INTERFACE DIGITAL-TO-ANALOG CONVERTER
FEATURES
Micro
power Operation: 600 μA at 5 V V
DD
Power-On Reset to Zero
+2.7 V to +5.5 V Analog Power Supply
12-Bit Monotonic
I
2
C Interface Up to 3.4 Mbps
Data Transmit Capability
On-Chip Output Buffer Amplifier, Rail-to-Rail
Operation
Double-Buffered Input Register
Address Support for up to Four DAC7574s
Synchronous Update Support for up to 16
Channels
Operation From -40
°
C to 105
°
C
Small 10 Lead MSOP Package
DESCRIPTION
The DAC7574 is a low-power, quad channel, 12-bit
buffered voltage output DAC. Its on-chip precision out-
put amplifier allows rail-to-rail output swing to be
achieved. The DAC7574 utilizes an I
2
C compatible two
wire serial interface supporting high-speed interface
mode with address support of up to four DAC7574s for
a total of 16 channels on the bus.
The DAC7574 uses V
DD
and GND to set the output
range of the DAC. The DAC7574 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 DAC7574 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.
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 3mW at V
DD
= 5 V reducing to 1 μW in power-down
mode.
APPLICATIONS
Process Control
Data Acquisition Systems
Closed-Loop Servo Control
PC Peripherals
Portable Instrumentation
The DAC7574 is available in a 10-lead MSOP package.
I2C is a trademark of Philips Corporation.
Pleasebeawarethatanimportantnoticeconcerningavailability, standard warranty, and use in critical applications of Texas Instruments
semiconductorproductsanddisclaimerstheretoappears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
ProductsconformtospecificationsperthetermsofTexasInstruments
standard warranty. Production processing does not necessarily in-
cludetestingofallparameters.
Copyright 2003, Texas Instruments Incorporated
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