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AD5687RBCPZ-RL7 Fiches technique(PDF) 1 Page - Analog Devices

No de pièce AD5687RBCPZ-RL7
Description  Dual, 16-/12-Bit nanoDAC with 2 ppm/째C Reference, SPI Interface
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

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Dual, 16-/12-Bit nanoDAC+
with 2 ppm/°C Reference, SPI Interface
Data Sheet
AD5689R/AD5687R
Rev. 0
Document Feedback
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
©2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
FEATURES
High relative accuracy (INL):
±2 LSB maximum at 16 bits
Low drift 2.5 V reference: 2 ppm/°C typical
Tiny package: 3 mm × 3 mm, 16-lead LFCSP
TUE: ±0.1% of FSR maximum
Offset error: ±1.5 mV maximum
Gain error: ±0.1% of FSR maximum
High drive capability: 20 mA, 0.5 V from supply rails
User-selectable gain of 1 or 2 (GAIN pin)
Reset to zero scale or midscale (RSTSEL pin)
1.8 V logic compatibility
50 MHz SPI with readback or daisy chain
Low glitch: 0.5 nV-sec
Robust 4 kV HBM and 1.5 kV FICDM ESD ratings
Low power: 3.3 mW at 3 V
2.7 V to 5.5 V power supply
−40°C to +105°C temperature range
APPLICATIONS
Optical transceivers
Base station power amplifiers
Process control (PLC I/O cards)
Industrial automation
Data acquisition systems
FUNCTIONAL BLOCK DIAGRAM
Figure 1.
GENERAL DESCRIPTION
The AD5689R/AD5687R members of the nanoDAC+™
family are low power, dual, 16-/12-bit buffered voltage output
digital-to-analog converters (DACs). The devices include
a 2.5 V, 2 ppm/°C internal reference (enabled by default)
and a gain select pin giving a full-scale output of 2.5 V
(gain = 1) or 5 V (gain = 2). The devices operate from
a single 2.7 V to 5.5 V supply, are guaranteed monotonic
by design, and exhibit less than 0.1% FSR gain error and
1.5 mV offset error performance. Both devices are available
in a 3 mm × 3 mm LFCSP and a TSSOP package.
The AD5689R/AD5687R also incorporate a power-on reset
circuit and a RSTSEL pin that ensure that the DAC outputs
power up to zero scale or midscale and remain there until
a valid write takes place. Each part contains a per channel
power-down feature that reduces the current consumption
of the device to 4 µA at 3 V while in power-down mode.
The AD5689R/AD5687R use a versatile serial peripheral
interface (SPI) that operates at clock rates up to 50 MHz.
and both devices contain a VLOGIC pin that is intended for
1.8 V/3 V/5 V logic.
Table 1. Dual nanoDAC+ Devices
Interface
Reference
16-Bit
12-Bit
SPI
Internal
AD5689R
AD5687R
External
AD5689
AD5687
I2C
Internal
N/A
AD5697R
External
N/A
N/A
PRODUCT HIGHLIGHTS
1. High Relative Accuracy (INL).
AD5689R (16-bit): ±2 LSB maximum
AD5687R (12-bit): ±1 LSB maximum
2. Low Drift 2.5 V On-Chip Reference.
2 ppm/°C typical temperature coefficient
5 ppm/°C maximum temperature coefficient
3. Two Package Options.
3 mm × 3 mm, 16-lead LFCSP
16-lead TSSOP
SCLK
VLOGIC
SYNC
SDIN
SDO
INPUT
REGISTER
DAC
REGISTER
STRING
DAC A
BUFFER
VOUTA
INPUT
REGISTER
DAC
REGISTER
STRING
DAC B
BUFFER
VOUTB
VREF
GND
VDD
POWER-
DOWN
LOGIC
POWER-ON
RESET
GAIN =
×1/×2
RSTSEL
GAIN
LDAC RESET
AD5689R/AD5687R
2.5V
REFERENCE


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