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| 型號(hào)： | AD7838 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Octal, 13-Bit Voltage-Output DAC with Parallel Interface(并行接口,8通道13位電壓輸出D/A轉(zhuǎn)換器) |
| 中文描述： | 八路，13位電壓輸出與并行接口（并行接口，8通道13位電壓輸出的D / A轉(zhuǎn)換器援會(huì)） |
| 文件頁(yè)數(shù)： | 1/4頁(yè) |
| 文件大?。?/td> | 103K |
| 代理商： | AD7838 |
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Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
AD7838
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
World Wide Web Site: http://www.analog.com
Fax: 617/326-8703
Analog Devices, Inc., 1997
TECHNICAL
Octal, 13-Bit Voltage-Output DAC
wth Parallel Interface
FUNCT IONAL BLOCK DIAGRAM
INPUT
LATCH A
DAC
LATCH A
AD7838
V
OUT
A
DUTGND
AB
V
OUT
B
V
OUT
C
DUTGND
CD
REF AB
REF CD REF EF REF GH
V
OUT
D
V
OUT
E
DUTGND
EF
V
OUT
F
D12
D0
CS
WR
A0–A2
LDACAB
LDACCD
LDACEF
LDACGH
POWER ON
RESET
INPUT
LATCH B
DAC
LATCH B
DAC B
DAC A
LATCH C
DAC
LATCH C
INPUT
LATCH D
DAC
LATCH D
INPUT
LATCH E
DAC
LATCH E
DAC D
DAC
LATCH F
DAC F
DAC C
DAC E
V
OUT
G
DUTGND
GH
V
OUT
H
INPUT
LATCH G
DAC
LATCH G
INPUT
LATCH H
DAC
LATCH H
DAC H
DAC G
INPUT
CONTROL LOGIC
CLR
V
SS
V
DD
GND
FEATURES
Eight 13-Bit DACs in One Package
Full 13-Bit Performance without Adjustments
Buffered Voltage Outputs
Offset Adjust for Each DAC Pair
6
5 V Supply Operation
Unipolar or Bipolar Output Swing to
6
4.5 V
Output Settling to 1/2 LSB in 5
m
s
Double Buffered Digital Inputs
Microprocessor and TTL/CMOS Compatible
Asynchronous Load Facility using
LDAC
Inputs
Clear Function to User-Defined Voltage
Power-On-Reset, Outputs Power Up at DUTGND
44-Lead PLCC Package
Pin Compatible with MAX547
APPLICATIONS
Process Control
Automatic Test Equipment
General Purpose Instrumentation
Digital Offset and Gain Adjustment
Arbitrary Function Generators
Avionics Equipment
GE NE RAL DE SCRIPT ION
T he AD7838 contains eight 13-bit, voltage-output digital-to-
analog converters (DACs). T he output voltages are provided
through on-chip precision output amplifiers into which an exter-
nal offset voltage can be inserted via the DUT GND pins. T he
AD7838 operates from a
±
5 V
±
5% supply. Bipolar output
voltages with up to
±
4.5 V voltage swing can be achieved with
no external components. T he AD7838 has four separate refer-
ence inputs; each is connected to two DACs, providing different
scale output voltages for every DAC pair.
T he AD7838 features double-buffered interface logic with a 13-
bit parallel data bus. Each DAC has an input latch and a DAC
latch. Data in the DAC latch sets the output voltage. T he eight
input latches are addressed with three address lines. Data is
loaded to the input latch with a single write instruction. An
asynchronous
LDAC
input transfers data from the input latch to
the DAC latch. T he four
LDAC
inputs each control two DACs,
and all DAC latches can be updated simultaneously by asserting
all
LDAC
pins. An asynchronous clear input resets the output
of all eight DACs to the relevant DUT GND. Asserting
CLR
resets both the DAC and the input latch to bipolar zero (1000
Hex). On power-up, reset circuitry performs the same function
as
CLR
. All logic inputs are T T L/CMOS compatible.
T he AD7838 is available in a 44-lead PLCC package.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7839 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Octal 13-Bit, Parallel Input, Voltage-Output DAC |
| AD7839AS | 制造商:Analog Devices 功能描述:DAC 8-CH R-2R 13-bit 44-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:OCTAL 13-BIT +/- 10V OUTPUT DAC I.C. - Bulk 制造商:Analog Devices 功能描述:IC 13-BIT DAC |
| AD7839AS-REEL | 制造商:Analog Devices 功能描述:DAC 8-CH R-2R 13-bit 44-Pin MQFP T/R 制造商:Rochester Electronics LLC 功能描述:OCTAL 13-BIT +/- 10V OUTPUT DAC I.C. - Tape and Reel |
| AD7839ASZ | 功能描述:IC DAC 13BIT OCTAL V-OUT 44-MQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 設(shè)置時(shí)間:4µs 位數(shù):12 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-uMAX 包裝:管件 輸出數(shù)目和類型:2 電壓，單極 采樣率（每秒）:* 產(chǎn)品目錄頁(yè)面:1398 (CN2011-ZH PDF) |
| AD7839ASZ | 制造商:Analog Devices 功能描述:IC 13-BIT DAC |
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