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AD5544 - Analog Devices - Quad/ Current-Output Serial-Input/ 16-Bit/14-Bit DACs

Номер произв AD5544
Описание Quad/ Current-Output Serial-Input/ 16-Bit/14-Bit DACs
Производители Analog Devices
логотип Analog Devices логотип 
предварительный просмотр
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AD5544 Даташит, Описание, Даташиты
a
Quad, Current-Output
Serial-Input, 16-Bit/14-Bit DACs
AD5544/AD5554
FEATURES
AD5544 16-Bit Resolution
AD5554 14-Bit Resolution
2 mA Full-Scale Current ؎20%, with VREF = ؎10 V
2 s Settling Time
VSS BIAS for Zero-Scale Error Reduction @ Temp
Midscale or Zero-Scale Reset
Four Separate 4Q Multiplying Reference Inputs
SPI-Compatible 3-Wire Interface
Double Buffered Registers Enable
Simultaneous Multichannel Change
Internal Power ON Reset
Compact SSOP-28 Package
APPLICATIONS
Automatic Test Equipment
Instrumentation
Digitally-Controlled Calibration
GENERAL DESCRIPTION
The AD5544/AD5554 quad, 16-/14-bit, current-output, digital-
to-analog converters are designed to operate from a single 5 V
supply.
The applied external reference input voltage (VREF) determines
the full-scale output current. Integrated feedback resistors (RFB)
provide temperature-tracking, full-scale voltage outputs when
combined with an external I-to-V precision amplifier.
A doubled-buffered serial-data interface offers high-speed,
3-wire, SPI- and microcontroller-compatible inputs using
serial-data-in (SDI), clock (CLK), and a chip-select (CS). In
addition, a serial-data-out pin (SDO) allows for daisy-chaining
when multiple packages are used. A common level-sensitive
load-DAC strobe (LDAC) input allows simultaneous update of
all DAC outputs from previously loaded input registers. Addi-
tionally, an internal power ON reset forces the output voltage to
zero at system turn ON. An MSB pin allows system reset asser-
tion (RS) to force all registers to zero code when MSB = 0, or
to half-scale code when MSB = 1.
AD5544/AD5554 are packaged in the compact SSOP-28.
SDO
SDI
CS
CLK
FUNCTIONAL BLOCK DIAGRAM
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9 16
D10
D11
D12
D13
D14
D15
A0
A1
EN
DAC A
B
C
D
2:4
DECODE
DGND
INPUT
REGISTER R
INPUT
REGISTER R
INPUT
REGISTER R
INPUT
REGISTER R
POWER-
ON
RESET
RS MSB
VREF A B C D
DAC A
REGISTER R
DAC A
DAC B
REGISTER R
DAC B
DAC C
REGISTER R
DAC C
DAC D
REGISTER R
DAC D
AD5544
LDAC
VSS
VDD
RFBA
IOUTA
AGNDA
RFBB
IOUTB
AGNDB
RFBC
IOUTC
AGNDC
RFBD
IOUTD
AGNDD
AGNDF
1.0
0.5
0.0
–0.5
–1.0
1.0
0.5
0.0
–0.5
–1.0
1.0
0.5
0.0
–0.5
–1.0
1.0
0.5
0.0
–0.5
–1.0
0
DAC A
DAC B
DAC C
DAC D
8192 16384 24576 32768 40960 49152 57344 65536
CODE – Decimal
Figure 1. AD5544 INL vs. Code Plot (TA = 25°C)
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2000
--------------------------------------------

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AD5544 Даташит, Описание, Даташиты
AD5544/AD5554–SPECIFICATIONS (@ VDD = 5 V ؎ 10%, VSS = 0 V, IOUTX = Virtual GND, AGNDX = 0 V,
AD5544 ELECTRICAL CHARACTERISTICS
VREFA, B, C, D = 10 V, TA = Full Operating Temperature Range,
unless otherwise noted.)
Parameter
Symbol Condition
Min Typ Max Unit
STATIC PERFORMANCE1
Resolution
Relative Accuracy
Differential Nonlinearity
Output Leakage Current
Full-Scale Gain Error
Full-Scale Tempco2
Feedback Resistor
N
INL
DNL
IOUTX
IOUTX
GFSE
TCVFS
RFBX
1 LSB = VREF/216 = 153 µV when VREF = 10 V
Data = 0000H, TA = 25°C
Data = 0000H, TA = TA Max
Data = FFFFH
VDD = 5 V
4
± 0.75
1
6
16
±4
± 1.5
10
20
±3
8
Bits
LSB
LSB
nA
nA
mV
ppm/°C
k
REFERENCE INPUT
VREFX Range
Input Resistance
Input Resistance Match
Input Capacitance2
VREFX
RREFX
RREFX
CREFX
Channel-to-Channel
–15
46
1
5
+15 V
8 k
%
pF
ANALOG OUTPUT
Output Current
Output Capacitance2
IOUTX
COUTX
Data = FFFFH
Code-Dependent
1.25
80
2.5 mA
pF
LOGIC INPUTS AND OUTPUT
Logic Input Low Voltage
Logic Input High Voltage
Input Leakage Current
Input Capacitance2
Logic Output Low Voltage
Logic Output High Voltage
INTERFACE TIMING2, 3
Clock Width High
Clock Width Low
CS to Clock Setup
Clock to CS Hold
Clock to SDO Prop Delay
Load DAC Pulsewidth
Data Setup
Data Hold
Load Setup
Load Hold
VIL
VIH
IIL
CIL
VOL
VOH
tCH
tCL
tCSS
tCSH
tPD
tLDAC
tDS
tDH
tLDS
tLDH
IOL = 1.6 mA
IOH = 100 µA
0.8 V
2.4 V
1 µA
10 pF
0.4 V
4V
25 ns
25 ns
0 ns
25 ns
2 20 ns
25 ns
20 ns
20 ns
5 ns
25 ns
SUPPLY CHARACTERISTICS
Power Supply Range
Positive Supply Current
Negative Supply Current
Power Dissipation
Power Supply Sensitivity
VDD RANGE
IDD
ISS
PDISS
PSS
Logic Inputs = 0 V
Logic Inputs = 0 V, VSS = –5 V
Logic Inputs = 0 V
VDD = ± 5%
4.5 5.5 V
50 250 µA
0.001 1
µA
1.25 mW
0.006 %/%
NOTES
1All static performance tests (except IOUT) are performed in a closed-loop system using an external precision OP177 I-to-V converter amplifier. The AD5544
RFB terminal is tied to the amplifier output. Typical values represent average readings measured at 25 °C.
2These parameters are guaranteed by design and not subject to production testing.
3All input control signals are specified with tR = tF = 2.5 ns (10% to 90% of 3 V) and timed from a voltage level of 1.5 V.
Specifications subject to change without notice.
–2– REV. 0
--------------------------------------------

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AD5544 Даташит, Описание, Даташиты
AD5544/AD5554
(@ VDD = 5 V ؎ 10%, VSS = –300 mV, IOUTX = Virtual GND, AGNDX = 0 V,
AD5544
ELECTRICAL
CHARACTERISTICS
VREFA, B, C, D = 10 V, TA = full operating temperature range, unless
otherwise noted.)
Parameter
Symbol
Condition
Min Typ Max Unit
AC CHARACTERISTICS1
Output Voltage Settling Time tS
To ± 0.1% of Full Scale, Data = 0000H
Output Voltage Settling Time tS
to FFFFH to 0000H
To ± 0.0015% of Full Scale, Data = 0000H
to FFFFH to 0000H
Reference Multiplying BW BW –3 dB VREFX = 100 mV rms, Data = FFFFH,
CFB = 15 pF
DAC Glitch Impulse
Q
VREFX = 10 V, Data 0000H to 8000H to 0000H
Feedthrough Error
VOUTX/VREFX Data = 0000H, VREFX = 100 mV rms, f = 100 kHz
Crosstalk Error
VOUTA/VREFB Data = 0000H, VREFB = 100 mV rms,
Adjacent Channel, f = 100 kHz
Digital Feedthrough
Q
CS = 1, and fCLK = 1 MHz
Total Harmonic Distortion THD
VREF = 5 V p-p, Data = FFFFH, f = 1 kHz
Output Spot Noise Voltage eN
f = 1 kHz, BW = 1 Hz
1
2
2
1.2
–65
–90
5
–90
7
µs
µs
MHz
nV-s
dB
dB
nV-s
dB
nV/Hz
NOTES
1All ac characteristic tests are performed in a closed-loop system using an OP42 I-to-V converter amplifier.
Specifications subject to change without notice.
REV. 0
–3–
--------------------------------------------





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