AD5547-EP Datasheet, PDF (1/12 Pages) Analog Devices – Dual-Current Output, Parallel Input

Data Sheet
Dual-Current Output, Parallel Input, 16-Bit
Multiplying DAC with 4-Quadrant Resistors
AD5547-EP
FEATURES
Dual channel
16-bit resolution: AD5547-EP
2- or 4-quadrant, 6.8 MHz bandwidth multiplying DAC
±1 LSB DNL
±2 LSB INL
Operating supply voltage: 2.7 V to 5.5 V
Low noise: 12 nV/√Hz
Low power: IDD = 10 μA maximum
0.5 μs settling time
Built-in RFB facilitates current-to-voltage conversion
Built-in 4-quadrant resistors allow 0 V to –10 V, 0 V to +10 V,
or ±10 V outputs
2 mA full-scale current ± 20%, with VREF = 10 V
Extended automotive operating temperature range
−55°C to +125°C
Selectable zero-scale/midscale power-on presets
Compact 38-lead TSSOP package
ENHANCED PRODUCT FEATURES
Supports defense and aerospace applications (AQEC
standard)
Military temperature range (such as −55°C to +125°C).
Controlled manufacturing baseline
One assembly/test site
One fabrication site
Enhanced product change notification
Qualification data available on request
APPLICATIONS
Automatic test equipment
Instrumentation
Digitally controlled calibration
Digital waveform generation
VREF
U1
–VREF
C1
FUNCTIONAL BLOCK DIAGRAM
R_1A
R_COMA V_REFA R_OFSA
V_DD
D0 TO D15
D0 TO
D15
INPUT
REGISTER
RS
DAC A
REGISTER
RS
DAC A
DAC A
WR DAC B
A0, A1 _ADDR
DECODE
INPUT
REGISTER
RS
DAC B
REGISTER
RS
DAC B
POWER
ON
RESET
AD5547-EP
R_FBA
I_OUTA
AGNDA
AGNDB
I_OUTB
R_FBB
R_OFSB
DGND
RS MSB LDAC
R_1B
R_COMB V_REFB
Figure 1.
GENERAL DESCRIPTION
The AD5547-EP is a dual precision, 16-bit, multiplying, low power,
current-output, parallel input, digital-to-analog converter (DAC). It
is designed to operate from a single +5 V supply with ±10 V
multiplying references for 4-quadrant outputs with a 6.8 MHz
bandwidth.
The built-in, 4-quadrant resistors facilitate resistance matching
and temperature tracking, which minimize the number of
components needed for multiquadrant applications. In addition,
the feedback resistor (RFB) simplifies the I-to-V conversion with
an external buffer.
The AD5547-EP is available in a compact, 38-lead TSSOP
package and operates at the extended automotive temperature
range of −55°C to +125°C. Additional application and technical
information can be found in the AD5547 data sheet.
16-BIT DATA
R_1A R_COMA V_REFA
R1
R2
AD5547-EP
POWER-ON
RESET
R_OFSA R_FBA
ROFS RFB
C2
IOUTA
16-BIT
DAC A
AGNDA
U2
VOUTA
–VREF TO +VREF
WR
LDAC
RS
MSB
A0, A1
WR LDAC RS
MSB A0, A1
2 ^{(ONE CHANNEL SHOWN ONLY)}
Figure 2. 16-Bit 4-Quadrant Multiplying DAC with Minimum of External Components (Only One Channel Is Shown)
Rev. 0
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