參數(shù)資料
型號: DAC8814IBDB
廠商: Texas Instruments, Inc.
英文描述: Quad, Serial Input 16-Bit Multiplying Digital-to-Analog Converter
中文描述: 四,串行輸入16位乘法數(shù)字到模擬轉(zhuǎn)換器
文件頁數(shù): 1/31頁
文件大?。?/td> 264K
代理商: DAC8814IBDB
www.ti.com
P
FEATURES
Relative Accuracy: 1 LSB Max
Differential Nonlinearity: 1 LSB Max
2-mA Full-Scale Current
±
20%,
with V
REF
=
±
10 V
0.5 μs Settling Time
Midscale or Zero-Scale Reset
Four Separate 4Q Multiplying Reference
Inputs
Reference Bandwidth: 10 MHz
Reference Dynamics: -105 dB THD
SPI-Compatible 3-Wire Interface:
50 MHz
Double Buffered Registers Enable
Simultaneous Multichannel Change
Internal Power On Reset
Industry-standard Pin Configuration
DESCRIPTION
The DAC8814 is a quad, 16-bit, current-output digi-
tal-to-analog converter (DAC) designed to operate
from a single +2.7 V to 5.0 V supply.
APPLICATIONS
Automatic Test Equipment
Instrumentation
Digitally Controlled Calibration
16
DAC
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
A0
A1
EN
A
B
C
D
2:4
Decode
SDO
SDI
CS
CLK
DGND
RS
MSB
LDAC
V
SS
A
GND
F
A
GND
D
I
OUT
D
R
FB
D
A
GND
C
I
OUT
C
R
FB
C
A
GND
B
I
OUT
C
R
FB
B
A
GND
A
I
OUT
A
R
FB
A
A B C D
V
REF
Input
Register
R
Input
Register
R
Input
Register
R
Input
Register
R
Power-on
Reset
DAC A
Register
R
DAC B
Register
R
DAC C
Register
R
DAC D
Register
R
DAC A
DAC B
DAC C
DAC D
DAC8814
SBAS338–JANUARY 2005
Quad, Serial Input 16-Bit Multiplying Digital-to-Analog Converter
The applied external reference input voltage V
REF
determines the full-scale output current. An internal
feedback resistor (R
) provides temperature tracking
for the full-scale output when combined with an
external I-to-V precision amplifier.
A
high-speed, 3-wire, SPI and microcontroller compat-
ible inputs using serial data in (SDI), clock (CLK), and
a chip-select (CS). In addition, a serial data out pin
(SDO) allows for daisy-chaining when multiple pack-
ages are used. A common level-sensitive load DAC
strobe (LDAC) input allows simultaneous update of all
DAC outputs from previously loaded input registers.
Additionally, an internal power on reset forces the
output voltage to zero at system turn on. An MSB pin
allows system reset assertion (RS) to force all regis-
ters to zero code when MSB = 0, or to half-scale
code when MSB = 1.
doubled
buffered
serial
data
interface
offers
The DAC8814 is available in an SSOP package.
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.
PRODUCT PREVIEW information concerns products in the forma-
tive or design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the
right to change or discontinue these products without notice.
Copyright 2005, Texas Instruments Incorporated
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