參數(shù)資料
型號: AD5780ACPZ
廠商: Analog Devices Inc
文件頁數(shù): 1/28頁
文件大?。?/td> 0K
描述: IC DAC VOLT OUT 18BIT 24LFCSP
標(biāo)準(zhǔn)包裝: 1
設(shè)置時間: 2.5µs
位數(shù): 18
數(shù)據(jù)接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
電壓電源: 模擬和數(shù)字,雙 ±
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 24-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 24-LFCSP-VQ EP(4x5)
包裝: 托盤
輸出數(shù)目和類型: 1 電壓,雙極
配用: EVAL-AD5780SDZ-ND - BOARD EVALUATION FOR AD5780
System Ready, 18-Bit ±1 LSB INL,
Voltage Output DAC
Data Sheet
Rev. E
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
2011–2013 Analog Devices, Inc. All rights reserved.
FEATURES
True 18-bit voltage output DAC, ±1 LSB INL
8 nV/√Hz output noise spectral density
0.025 LSB long-term linearity error stability
±0.018
ppm/°C gain error temperature coefficient
2.5 s output voltage settling time
3.5 nV-sec midscale glitch impulse
Integrated precision reference buffers
Operating temperature range: 40°C to +125°C
4 mm × 5 mm LFCSP package
Wide power supply range of up to ±16.5 V
35 MHz Schmitt triggered digital interface
1.8 V-compatible digital interface
APPLICATIONS
Medical instrumentation
Test and measurement
Industrial control
Scientific and aerospace instrumentation
Data acquisition systems
Digital gain and offset adjustment
Power supply control
FUNCTIONAL BLOCK DIAGRAM
A1
6.8k
6k
6.8k
R1
RFB
18-BIT
DAC
REG
18
INPUT
SHIFT
REGISTER
AND
CONTROL
LOGIC
POWER-ON RESET
AND CLEAR LOGIC
AD5780
IOVCC
SDIN
VCC
VDD
VREFN
AGND
VSS
DGND
SCLK
SYNC
SDO
LDAC
CLR
RESET
RFB
INV
VOUT
VREFP
09649-
001
Figure 1.
Table 1. Related Devices
Part No.
Description
20-bit, 2 LSB accurate DAC
20-bit, 1 ppm accurate DAC
18-bit, 0.5 LSB accurate DAC
16-bit, 1 LSB accurate 5 V DAC
16-bit, 0.5 LSB accurate DAC
GENERAL DESCRIPTION
The AD57801 is a true 18-bit, unbuffered voltage output DAC
that operates from a bipolar supply of up to 33 V. The AD5780
accepts a positive reference input range of 5 V to VDD 2.5 V
and a negative reference input range of VSS + 2.5 V to 0 V. Both
reference inputs are buffered on chip and external buffers are
not required. The AD5780 offers a relative accuracy specifica-
tion of ±1 LSB maximum range, and operation is guaranteed
monotonic with a ±1 LSB DNL maximum range specification.
The part uses a versatile 3-wire serial interface that operates at
clock rates of up to 35 MHz and is compatible with standard
SPI, QSPI, MICROWIRE, and DSP interface standards. The
part incorporates a power-on reset circuit that ensures that the
DAC output powers up to 0 V in a known output impedance
state and remains in this state until a valid write to the device
takes place. The part provides an output clamp feature that
places the output in a defined load state.
PRODUCT HIGHLIGHTS
1. True 18-bit accuracy.
2. Wide power supply range of up to ±16.5 V.
3. 40°C to +125°C operating temperature range.
4. Low 8 nV/√Hz noise.
5. Low ±0.018 ppm/°C gain error temperature coefficient.
COMPANION PRODUCTS
Output Amplifier Buffer: AD8675, ADA4898-1, ADA4004-1
External Reference: ADR445, ADR4550
DC-to-DC Design Tool: ADIsimPower
Additional companion products on the AD5780 product page
1
Protected by U.S. Patent No. 7,884,747 and 8,089,380.
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