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What is AD5667?

This electronic component, produced by the manufacturer "Analog Devices", performs the same function as "Dual 12-/14-/16-Bit nanoDACs".


AD5667 Datasheet PDF - Analog Devices

Part Number AD5667
Description Dual 12-/14-/16-Bit nanoDACs
Manufacturers Analog Devices 
Logo Analog Devices Logo 


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Dual, 12-/14-/16-Bit nanoDACs® with
5 ppm/°C On-Chip Reference, I2C® Interface
AD5627R/AD5647R/AD5667R, AD5627/AD5667
FEATURES
Low power, smallest pin-compatible, dual nanoDACs
AD5627R/AD5647R/AD5667R
12-/14-/16-bit
On-chip 1.25 V/2.5 V, 5 ppm/°C reference
AD5627/AD5667
12-/16-bit
External reference only
3 mm x 3 mm LFCSP and 10-lead MSOP
2.7 V to 5.5 V power supply
Guaranteed monotonic by design
Power-on reset to zero scale
Per channel power-down
Hardware LDAC and CLR functions
I2C-compatible serial interface supports standard (100 kHz),
fast (400 kHz), and high speed (3.4 MHz) modes
APPLICATIONS
Process control
Data acquisition systems
Portable battery-powered instruments
Digital gain and offset adjustment
Programmable voltage and current sources
Programmable attenuators
GENERAL DESCRIPTION
The AD5627R/AD5647R/AD5667R, AD5627/AD5667
members of the nanoDAC family are low power, dual, 12-, 14-,
16-bit buffered voltage-out DACs with/without on-chip
reference. All devices operate from a single 2.7 V to 5.5 V
supply, are guaranteed monotonic by design, and have an I2C-
compatible serial interface.
The AD5627R/AD5647R/AD5667R have an on-chip reference.
The AD56x7RBCPZ have a 1.25 V, 5 ppm/°C reference, giving a
full-scale output range of 2.5 V; the AD56x7RBRMZ have a
2.5 V, 5 ppm/°C reference, giving a full-scale output range of 5
V. The on-chip reference is off at power-up, allowing the use of
an external reference. The internal reference is enabled via a
software write. The AD5667 and AD5627 require an external
reference voltage to set the output range of the DAC.
The AD56x7R/AD56x7 incorporate a power-on reset circuit
that ensures the DAC output powers up to 0 V, and remains
there until a valid write takes place. The part contains a per-
channel power-down feature that reduces the current
consumption of the device to 480 nA at 5 V and provides
ADDR
SCL
SDA
FUNCTIONAL BLOCK DIAGRAMS
VDD
GND
VREFIN/VREFOUT
AD5627R/AD5647R/AD5667R
INPUT
REGISTER
DAC
REGISTER
1.25V/2.5V REF
STRING
DAC A
BUFFER
INPUT
REGISTER
DAC
REGISTER
STRING
DAC B
BUFFER
VOUTA
VOUTB
POWER-ON
RESET
POWER-DOWN
LOGIC
ADDR
SCL
SDA
LDAC CLR
Figure 1. AD5627R/AD5647R/AD5667R
VDD
GND
VREFIN
AD5627/AD5667
INPUT
REGISTER
DAC
REGISTER
STRING
DAC A
BUFFER
INPUT
REGISTER
DAC
REGISTER
STRING
DAC B
BUFFER
POWER-ON
RESET
POWER-DOWN
LOGIC
VOUTA
VOUTB
LDAC CLR
Figure 2. AD5627/AD5667
software-selectable output loads while in power-down mode.
The low power consumption of this part in normal operation
makes it ideally suited to portable battery-operated equipment.
The on-chip precision output amplifier enables rail-to-rail
output swing.
The AD56x7R/AD56x7 use a 2-wire I2C-compatible serial
interface that operates in standard (100 kHz), fast (400 kHz),
and high speed (3.4 MHz) modes.
Table 1. Related Devices
Part No.
AD5663
AD5623R/AD5643R/AD5663R
AD5625R/AD5645R/AD5665R,
AD5625/AD5665
Description
2.7 V to 5.5 V, dual 16-bit DAC,
external reference, SPI® interface
2.7 V to 5.5 V, dual 12-, 14-, 16-bit
DACs, internal reference,
SPI interface
2.7 V to 5.5 V, quad 12-, 14-, 16-bit
DACs, with/without internal
reference, I2C interface
Rev. 0
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 that may result from its use. Specifications subject to change without notice. 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
©2007 Analog Devices, Inc. All rights reserved.

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AD5667 equivalent
AD5627R/AD5647R/AD5667R, AD5627/AD5667
AC CHARACTERISTICS
VDD = 2.7 V to 5.5 V; RL = 2 kΩ to GND; CL = 200 pF to GND; VREFIN = VDD; all specifications TMIN to TMAX, unless otherwise noted.1
Table 3.
Parameter2
Output Voltage Settling Time
AD5627R/AD5627
AD5647R
AD5667R/AD5667
Slew Rate
Digital-to-Analog Glitch Impulse
Digital Feedthrough
Reference Feedthrough
Digital Crosstalk
Analog Crosstalk
DAC-to-DAC Crosstalk
Multiplying Bandwidth
Total Harmonic Distortion
Output Noise Spectral Density
Output Noise
Min Typ Max Unit
3 4.5
3.5 5
47
1.8
15
0.1
−90
0.1
1
4
1
4
340
−80
120
100
15
μs
μs
μs
V/μs
nV-s
nV-s
dB
nV-s
nV-s
nV-s
nV-s
nV-s
kHz
dB
nV/√Hz
nV/√Hz
μV p-p
Conditions/Comments3
¼ to ¾ scale settling to ±0.5 LSB
¼ to ¾ scale settling to ±0.5 LSB
¼ to ¾ scale settling to ±2 LSB
1 LSB change around major carry transition
VREF = 2 V ± 0.1 V p-p, frequency 10 Hz to 20 MHz
External reference
Internal reference
External reference
Internal reference
VREF = 2 V ± 0.1 V p-p
VREF = 2 V ± 0.1 V p-p, frequency = 10 kHz
DAC code = midscale, 1 kHz
DAC code = midscale, 10 kHz
0.1 Hz to 10 Hz
1 Guaranteed by design and characterization, not production tested.
2 See the Terminology section.
3 Temperature range is −40°C to +105°C, typical @ 25°C.
Rev. 0 | Page 5 of 32


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