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AD5780 Datasheet(PDF) 1 Page - Analog Devices

No. de pieza AD5780
Descripción Electrónicos  System Ready, 20-Bit, 짹2LSB INL
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
Logo AD - Analog Devices

AD5780 Datasheet(HTML) 1 Page - Analog Devices

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System Ready, 20-Bit, ±2LSB INL,
Voltage Output DAC
Data Sheet
AD5790
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
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
www.analog.com
Fax: 781.461.3113
©2011-2012 Analog Devices, Inc. All rights reserved.
FEATURES
Single 20-bit voltage output DAC, ±2 LSB INL
8 nV/√Hz output noise spectral density
0.1 LSB long-term linearity error stability
±0.018
ppm/°C gain error temperature coefficient
2.5 μs 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
6.8kΩ
6kΩ
6.8kΩ
R1
RFB
DAC
REG
20
20
INPUT
SHIFT
REGISTER
AND
CONTROL
LOGIC
POWER-ON-RESET
AND CLEAR LOGIC
AD5790
IOVCC
SDIN
VCC
VDD
VREFP
AGND
VSS
DGND
SCLK
SYNC
SDO
LDAC
CLR
RESET
RFB
INV
VOUT
20-BIT
DAC
VREFN
Figure 1.
Table 1. Related Devices
Part No.
Description
AD5791
20-bit, 1 LSB accurate DAC
AD5780
18-bit, ±1 LSB INL, voltage output DAC ,
buffered reference inputs
AD5781
18-bit, ±1 LSB INL, voltage Output DAC ,
unbuffered reference inputs
AD5760
16-bit, ±0.5 LSB INL, voltage Output DAC
AD5541A/AD5542A
16-bit, 1 LSB accurate 5 V DAC
GENERAL DESCRIPTION
The AD57901 is a single 20-bit, unbuffered voltage-output DAC
that operates from a bipolar supply of up to 33 V. The AD5790
accepts a positive reference input in the range of 5 V to VDD
2.5 V and a negative reference input in the range of VSS + 2.5 V
to 0 V. The AD5790 offers a relative accuracy specification of
±2 LSB maximum range, and operation is guaranteed mono-
tonic with a −1 LSB to +3 LSB DNL 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.
Reference buffers are also provided on chip. The part incorpo-
rates a power-on reset circuit that ensures 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 a disable feature that places the output in a
defined load state. The part provides an output clamp feature
that places the output in a defined load state.
1 Protected by U.S. Patent No. 7,884,747.
PRODUCT HIGHLIGHTS
1.
20-bit resolution.
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
DC-to-DC Design Tool: ADIsimPower™
Additional companion products on the AD5790 product page


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