AD5671R Datasheet, PDF (1/32 Pages) Analog Devices – Base station power amplifiers

Data Sheet
Octal, 12-/16-Bit nanoDAC+ with
2 ppm/°C Reference, I²C Interface
AD5671R/AD5675R
FEATURES
High performance
High relative accuracy (INL): ±3 LSB maximum at 16 bits
Total unadjusted error (TUE): ±0.14% of FSR maximum
Offset error: ±1.5 mV maximum
Gain error: ±0.06% of FSR maximum
Low drift 2.5 V reference: 2 ppm/°C typical
Wide operating ranges
−40°C to +125°C temperature range
2.7 V to 5.5 V power supply
Easy implementation
User selectable gain of 1 or 2 (GAIN pin/bit)
1.8 V logic compatibility
400 kHz I²C-compatible serial interface
Robust 2 kV HBM and 1.5 kV FICDM ESD rating
20-lead, RoHS-compliant TSSOP and LFCSP
APPLICATIONS
Optical transceivers
Base station power amplifiers
Process control (PLC input/output cards)
Industrial automation
Data acquisition systems
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.
Table 1. Octal nanoDAC+® Devices
Interface
Reference
16-Bit
SPI
Internal
AD5676R
External
AD5676
I²C
Internal
AD5675R
12-Bit
AD5672R
Not applicable
AD5671R
PRODUCT HIGHLIGHTS
1. High Relative Accuracy (INL)
AD5671R (12-bit): ±1 LSB maximum
AD5675R (16-bit): ±3 LSB maximum
2. Low Drift, 2.5 V On-Chip Reference
FUNCTIONAL BLOCK DIAGRAM
V_LOGIC
V_DD
V_REFOUT
AD5671R/AD5675R
SCL
SDA
A1
A0
LDAC
RESET
INPUT
REGISTER
INPUT
REGISTER
INPUT
REGISTER
INPUT
REGISTER
INPUT
REGISTER
INPUT
REGISTER
INPUT
REGISTER
INPUT
REGISTER
DAC
REGISTER
DAC
REGISTER
DAC
REGISTER
DAC
REGISTER
DAC
REGISTER
DAC
REGISTER
DAC
REGISTER
DAC
REGISTER
2.5V
REF
STRING
DAC 0
BUFFER
STRING
DAC 1
BUFFER
STRING
DAC 2
BUFFER
STRING
DAC 3
BUFFER
STRING
DAC 4
BUFFER
STRING
DAC 5
BUFFER
STRING
DAC 6
BUFFER
STRING
DAC 7
BUFFER
V_OUT0
V_OUT1
V_OUT2
V_OUT3
V_OUT4
V_OUT5
V_OUT6
V_OUT7
POWER-ON
RESET
GAIN POWER-DOWN
×1/×2
LOGIC
RSTSEL
GAIN
GND
Figure 1.
Rev. B
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