Octal, 12-/16-Bit nanoDAC+ with
2 ppm/°C Reference, I2C Interface
AD5671R/AD5675R
Data Sheet
FEATURES
GENERAL DESCRIPTION
The AD5671R/AD5675R are low power, octal, 12-/16-bit
buffered voltage output digital-to-analog converters (DACs).
They 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 and are guaranteed monotonic by design.
The AD5671R/AD5675R are available in a 20-lead TSSOP and in
a 20-lead LFCSP and incorporate a power-on reset circuit and a
RSTSEL pin that ensures the DAC outputs power up to zero scale
or midscale and remain there until a valid write. The AD5671R/
AD5675R contain a power-down mode, reducing the current
consumption to 1 μA typical while in power-down mode.
High performance
High relative accuracy (INL): 3 LSB maximum at 16 bits
Total unadjusted error (TUE): 0.14ꢀ of FSR maximum
Offset error: 1.5 mꢁ maximum
Gain error: 0.06ꢀ of FSR maximum
Low drift 2.5 ꢁ reference: 2 ppm/°C typical
Wide operating ranges
−40°C to +125°C temperature range
2.7 ꢁ to 5.5 ꢁ power supply
Easy implementation
User selectable gain of 1 or 2 (GAIN pin/bit)
1.8 ꢁ logic compatibility
400 kHz I2C-compatible serial interface
Robust 2 kꢁ HBM and 1.5 kꢁ FICDM ESD rating
20-lead, RoHS-compliant TSSOP and LFCSP
Table 1. Octal nanoDAC+® Devices
Interface
Reference
16-Bit
12-Bit
SPI
Internal
External
Internal
AD5676R
AD5676
AD5675R
AD5672R
Not applicable
AD5671R
APPLICATIONS
Optical transceivers
I2C
Base station power amplifiers
Process control (PLC input/output cards)
Industrial automation
PRODUCT HIGHLIGHTS
1. High Relative Accuracy (INL)
AD5671R (12-bit): ±1 LSB maximum
AD5675R (16-bit): ±± LSB maximum
2. Low Drift, 2.5 V On-Chip Reference
Data acquisition systems
FUNCTIONAL BLOCK DIAGRAM
V
V
V
REFOUT
LOGIC
DD
AD5671R/AD5675R
2.5V
REF
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
BUFFER
DAC
STRING
DAC 0
INPUT
V
V
V
V
V
V
V
V
0
1
2
3
4
5
6
7
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
REGISTER
REGISTER
DAC
REGISTER
STRING
DAC 1
INPUT
REGISTER
DAC
REGISTER
STRING
DAC 2
INPUT
REGISTER
SCL
DAC
REGISTER
STRING
DAC 3
INPUT
REGISTER
SDA
A1
DAC
REGISTER
STRING
DAC 4
INPUT
REGISTER
DAC
REGISTER
STRING
DAC 5
INPUT
REGISTER
A0
DAC
REGISTER
STRING
DAC 6
INPUT
REGISTER
LDAC
DAC
REGISTER
STRING
DAC 7
INPUT
REGISTER
RESET
GAIN POWER-DOWN
POWER-ON
RESET
×1/×2
LOGIC
RSTSEL
GAIN
GND
Figure 1.
Rev. B
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