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부품번호 | AD5744R 기능 |
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기능 | Bipolar Voltage Output DAC | ||
제조업체 | Analog Devices | ||
로고 | |||
전체 30 페이지수
www.DataSheet4U.com
Preliminary Technical Data
Complete Quad, 14-Bit, High Accuracy,
Serial Input, Bipolar Voltage Output DAC
AD5744R
FEATURES
Complete quad, 14-bit digital-to-analog
converter (DAC)
Programmable output range: ±10 V, ±10.2564 V,
or ±10.5263 V
±1 LSB max INL error, ±1 LSB max DNL error
Low noise: 60 nV/√Hz
Settling time: 10 μs max
Integrated reference buffers
Internal reference: 10 ppm/°C
On-chip die temperature sensor
Output control during power-up/brownout
Programmable short-circuit protection
Simultaneous updating via LDAC
Asynchronous CLR to zero code
Digital offset and gain adjust
Logic output control pins
DSP-/microcontroller-compatible serial interface
Temperature range: −40°C to +85°C
iCMOS™ process technology1
APPLICATIONS
Industrial automation
Open-/closed-loop servo control
Process control
Data acquisition systems
Automatic test equipment
Automotive test and measurement
High accuracy instrumentation
GENERAL DESCRIPTION
The AD5744R is a quad, 14-bit, serial input, bipolar voltage
output digital-to-analog converter that operates from supply
voltages of ±11.4 V up to ±16.5 V. Nominal full-scale output
range is ±10 V. The AD5744R provides integrated output
amplifiers, reference buffers and proprietary power-up/power-
down control circuitry. The parts also feature a digital I/O port,
which is programmed via the serial interface and an analog
temperature sensor. The part incorporates digital offset and
gain adjust registers per channel.
The AD5744R is a high performance converter that offers
guaranteed monotonicity, integral nonlinearity (INL) of ±1 LSB,
low noise, and 10 μs settling time. The AD5744R includes an
on-chip 5 V reference with a reference tempco of 10 ppm/°C
maximum. During power-up (when the supply voltages are
changing), VOUT is clamped to 0 V via a low impedance path.
The AD5744R uses a serial interface that operates at clock rates
of up to 30 MHz and is compatible with DSP and
microcontroller interface standards. Double buffering allows
the simultaneous updating of all DACs. The input coding is
programmable to either twos complement or offset binary
formats. The asynchronous clear function clears all DAC
registers to either bipolar zero or zero scale depending on the
coding used. The AD5744R is ideal for both closed-loop servo
control and open-loop control applications. The AD5744R is
available in a 32-lead TQFP, and offers guaranteed
specifications over the −40°C to +85°C industrial temperature
range. See Figure 1, the functional block diagram.
1 For analog systems designers within industrial/instrumentation equipment
OEMs who need high performance ICs at higher voltage levels, iCMOS is a
technology platform that enables the development of analog ICs capable of
30 V and operating at ±15 V supplies while allowing dramatic reductions in
power consumption and package size, and increased ac and dc
performance.
Rev. PrA
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
©2006 Analog Devices, Inc. All rights reserved.
AD5744R
Preliminary Technical Data
SPECIFICATIONS
AVDD = 11.4 V to 16.5 V, AVSS = −11.4 V to −16.5 V, AGND = DGND = REFGND = PGND = 0 V; REFAB = REFCD = 5 V external;
DVCC = 2.7 V to 5.25 V, RLOAD = 10 kΩ, CL = 200 pF. All specifications TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter
ACCURACY
Resolution
Relative Accuracy (INL)
Differential Nonlinearity
Bipolar Zero Error
Bipolar Zero TC2
Zero-Scale Error
Zero-Scale TC2
Gain Error
Gain TC2
DC Crosstalk2
REFERENCE INPUT/OUTPUT
Reference Input2
Reference Input Voltage
DC Input Impedance
Input Current
Reference Range
Reference Output
Output Voltage
Reference TC
Load2
Output Noise2
(0.1 Hz to 10 Hz)
Noise Spectral Density2
OUTPUT CHARACTERISTICS2
Output Voltage Range3
Output Voltage Drift vs. Time
Short Circuit Current
Load Current
Capacitive Load Stability
RL = ∞
RL = 10 kΩ
DC Output Impedance
B Grade1
14
±2
±1
±2
C Grade1
14
±1
±1
±2
±2 ±2
±2 ±2
±2
±0.02
±2
±0.02
±2
0.125
±2
0.125
Unit
Bits
LSB max
LSB max
mV max
ppm FSR/°C max
mV max
ppm FSR/°C max
% FSR max
ppm FSR/°C max
LSB max
Test Conditions/Comments
Outputs unloaded
Guaranteed monotonic
At 25°C; error at other
temperatures obtained using
bipolar zero TC
At 25°C; error at other
temperatures obtained using
zero scale TC
At 25°C; error at other
temperatures obtained using
gain TC
55
11
±10 ±10
1/7 1/7
V nominal
MΩ min
μA max
V min/V max
±1% for specified performance
Typically 100 MΩ
Typically ±30 nA
4.997/5.003
±10
1
18
4.997/5.003
±10
1
18
75 75
V min/V max
ppm/°C max
MΩ min
μV p-p typ
nV/√Hz typ
At 25°C
At 10 kHz
±10.5263
±14
±13
±15
10
±1
±10.5263
±14
±13
±15
10
±1
V min/V max
V min/V max
ppm FSR/500 hours
typ
ppm FSR/1000 hours
typ
mA typ
mA max
AVDD/AVSS = ±11.4 V, REFIN = 5V
AVDD/AVSS = ±16.5 V, REFIN = 7V
RISCC = 6 kΩ, see Figure 31
For specified performance
200
1000
0.3
200
1000
0.3
pF max
pF max
Ω max
Rev. PrA | Page 4 of 32
4페이지 Preliminary Technical Data
AD5744R
TIMING CHARACTERISTICS
AVDD = 11.4 V to 16.5 V, AVSS = −11.4 V to −16.5 V, AGND = DGND = REFGND = PGND = 0 V; REFAB = REFCD = 5 V external;
DVCC = 2.7 V to 5.25 V, RLOAD = 10 kΩ, CL = 200 pF. All specifications TMIN to TMAX, unless otherwise noted.
Table 3.
Parameter1, 2, 3
t1
t2
t3
t4
t5 4
t6
t7
t8
t9
t10
t11
t12
t13
t14
t155, 6
t16
t17
t18
Limit at TMIN, TMAX
33
13
13
13
13
40
2
5
1.4
400
10
500
10
10
2
25
20
2
170
Unit
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
μs min
ns min
ns min
ns max
μs max
ns min
μs max
ns max
ns min
μs min
ns min
Description
SCLK cycle time
SCLK high time
SCLK low time
SYNC falling edge to SCLK falling edge setup time
24th SCLK falling edge to SYNC rising edge
Minimum SYNC high time
Data setup time
Data hold time
SYNC rising edge to LDAC falling edge (all DACs updated)
SYNC rising edge to LDAC falling edge (single DAC updated)
LDAC pulse width low
LDAC falling edge to DAC output response time
DAC output settling time
CLR pulse width low
CLR pulse activation time
SCLK rising edge to SDO valid
SYNC rising edge to SCLK rising edge
SYNC rising edge to DAC output response time (LDAC = 0)
LDAC falling edge to SYNC rising edge
1 Guaranteed by design and characterization; not production tested.
2 All input signals are specified with tr = tf = 5 ns (10% to 90% of DVCC) and timed from a voltage level of 1.2 V.
3 See Figure 2, Figure 3, and Figure 4.
4 Standalone mode only.
5 Measured with the load circuit of Figure 5.
6 Daisy-chain mode only.
Rev. PrA | Page 7 of 32
7페이지 | |||
구 성 | 총 30 페이지수 | ||
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부품번호 | 상세설명 및 기능 | 제조사 |
AD5744 | (AD5744 / AD5764) Bipolar Voltage Output DAC | Analog Devices |
AD5744R | Bipolar Voltage Output DAC | Analog Devices |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |