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參數(shù)資料
| 型號(hào)： | DAC8544I |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | QUAD, 16-BIT, RAIL-TO-RAIL VOLTAGE OUTPUT, PARALLEL INTERFACE, DIGITAL-TO-ANALOG CONVERTER |
| 中文描述： | 四，16位，軌到軌電壓輸出，并行接口，數(shù)字模擬轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大小： | 476K |
| 代理商： | DAC8544I |
www.ti.com
FEATURES
Single Supply: +2.7 V to +5.5 V
Micropower Operation: 950 μA @ 5 V
Rail-To-Rail Voltage Output
Ultralow Crosstalk: –110 dB
Settling Time: 10 μs To
±
0.003% FSR
16-Bit Monotonic
Offset Error:
±
0.3 mV
Gain Error:
±
1 mV
Total Error:
±
3 mV
Per-Channel V
REF+
, V
REF–
, V
FB
Pins
Logic Compatible: +1.8 V to +5.5 V
Readback Capability
Double Buffered Inputs
Simultaneous or Sequential Update
Schmitt-Triggered Digital Inputs
Hardware Reset
48-Lead TQFP Package
DESCRIPTION
The DAC8544 is a low-power, quad-channel, 16-bit,
voltage output DAC. Its on-chip precision output
amplifier
allows
rail-to-rail
achieved at the output. The DAC8544 is 16-bit
monotonic and offers exceptional absolute accuracy
with ultralow crosstalk. The DAC8544 uses a 16-bit
parallel interface and features additional power-down
function pins as well as hardware-enabled, synchron-
ous DAC updating and reset capability.
APPLICATIONS
Process Control
Data Acquisition Systems
Closed-Loop Servo Control
PC Peripherals
Optical Networking
Interface
Logic
Power-On
Reset
Input
Register
Input
Register
DAC
Register
16 Bit
DAC
16 Bit
DAC
Buffer
Buffer
DAC
Register
Power-Down
Logic
D15
D0
CS
LDAC
RST
IOV
DD
A0
V
FBA
V
FBB
V
OUTB
V
FBC
V
OUTA
V
OUTC
V
FBD
V
OUTD
IOGND V
DD
GND
V
REFA
+
V
REFA
V
REFB
+
V
REFB
DAC8544
PD
V
REFC
+ V
REFC
V
REFD
+
V
REFD
A1
R/W
DAC8544
SLAS420–MAY 2004
QUAD, 16-BIT, RAIL-TO-RAIL VOLTAGE OUTPUT, PARALLEL INTERFACE,
DIGITAL-TO-ANALOG CONVERTER
voltage
swing
to
be
The DAC8544 requires an external reference voltage
to set the output range of the DAC. The device
incorporates a power-on-reset circuit that ensures
that the DAC outputs power up at zero volt and
remains there until a valid write takes place. In
addition, the DAC8544 contains a power-down fea-
ture, accessed via PD pin, that reduces the current
consumption of the device to 400 nA at 5 V. The
power consumption is typically under 5 mW at
V
DD
= 5 V.
The DAC8544 is available in a 48-lead TQFP pack-
age with an operating temperature range of –40
°
C to
+105
°
C.
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 the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright 2004, Texas Instruments Incorporated
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