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PDF AD5765 Data sheet ( Hoja de datos )
| Número de pieza | AD5765 | |
| Descripción | DAC | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Data Sheet
Complete Quad, 16-Bit, High Accuracy,
Serial Input, ±5 V DAC
AD5765
FEATURES
Complete quad, 16-bit digital-to-analog converter (DAC)
Programmable output range: ±4.096 V, ±4.201 V, or ±4.311 V
±1 LSB maximum INL error, ±1 LSB maximum DNL error
Low noise: 70 nV/√Hz
Settling time: 10 μs maximum
Integrated reference buffers
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 adjustment
Logic output control pins
DSP-/microcontroller-compatible serial interface
Temperature range: −40°C to +105°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 AD5765 is a quad, 16-bit, serial input, bipolar voltage
output, digital-to-analog converter (DAC) that operates from
supply voltages of ±4.75 V to ±5.25 V. The nominal full-scale
output range is ±4.096 V. The AD5765 provides integrated
output amplifiers, reference buffers, and proprietary power-
up/power-down control circuitry. The part also features a
digital I/O port, which is programmed via the serial interface.
The part incorporates digital offset and gain adjustment
registers per channel.
The AD5765 is a high performance converter that offers
guaranteed monotonicity, integral nonlinearity (INL) of ±1 LSB,
low noise, and 10 μs settling time. During power-up (when the
supply voltages are changing), the outputs are clamped to 0 V
via a low impedance path.
The AD5765 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 a twos complement or an offset binary format. The
asynchronous clear function clears all DAC registers to either
bipolar zero or zero scale, depending on the coding used. The
AD5765 is ideal for both closed-loop servo control and open-
loop control applications. The AD5765 is available in a 32-lead
TQFP and offers guaranteed specifications over the −40°C to
+105°C industrial temperature range. Figure 1 contains a
functional block diagram of the AD5765.
Table 1. Related Devices
Part No. Description
AD5764
Complete quad, 16-bit, high accuracy, serial input,
±10 V DAC
AD5763
Complete dual, 16-bit, high accuracy, serial input,
±5 V DAC
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, allowing dramatic reductions in power consumption and
package size and increased ac and dc performance.
Rev. C
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 ©2009–2011 Analog Devices, Inc. All rights reserved.
1 page  
AD5765
Data Sheet
SPECIFICATIONS
AVDD = 4.75 V to 5.25 V, AVSS = −4.75 V to −5.25 V, AGNDx = DGND = REFGND = PGND = 0 V, REFAB = REFCD = 2.048 V,
DVCC = 2.7 V to 5.25 V, RLOAD = 5 kΩ, CLOAD = 200 pF. All specifications TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
ACCURACY
Resolution
Relative Accuracy (INL)
Differential Nonlinearity (DNL)
Bipolar Zero Error
Bipolar Zero Temperature
Coefficient (TC)2
Zero-Scale Error
Zero-Scale Temperature
Coefficient (TC)2
Gain Error
Gain TC2
DC Crosstalk2
REFERENCE INPUT2
Reference Input Voltage
DC Input Impedance
Input Current
Reference Range
OUTPUT CHARACTERISTICS2
Output Voltage Range3
Output Voltage Drift vs. Time
Short-Circuit Current
Load Current
Capacitive Load Stability
RLOAD = ∞
RLOAD = 10 kΩ
DC Output Impedance
DIGITAL INPUTS2
VIH, Input High Voltage
VIL, Input Low Voltage
Input Current
Pin Capacitance
B Grade1
16
±2
±1
±2
±3
±1
±2
±3.5
±1
±0.03
±0.04
±1
0.5
2.048
1
±10
1 to 2.1
±4.31158
±4.20103
±4.096
±4.42105
±32
±37
10
±1
200
1000
0.3
2
0.8
±1
10
C Grade1
16
±1
±1
±2
±3
±1
±2
±3.5
±1
±0.03
±0.04
±1
0.5
2.048
1
±10
1 to 2.1
±4.31158
±4.20103
±4.096
±4.42105
±32
±37
10
±1
200
1000
0.3
2
0.8
±1
10
Unit
Bits
LSB max
LSB max
mV max
mV max
ppm FSR/°C typ
mV max
mV max
ppm FSR/°C typ
% FSR max
% FSR max
ppm FSR/°C typ
LSB max
Test Conditions/Comments
Outputs unloaded
Guaranteed monotonic
At 25°C
At 25°C
At 25°C, coarse gain register = 0
Coarse gain register = 0
V nominal
MΩ min
µA max
V min to V max
±1% for specified performance
Typically, 100 MΩ
Typically, ±30 nA
V min/V max
V min/V max
V min/V max
V min/V max
ppm FSR/500 hours typ
ppm FSR/1000 hours typ
mA typ
mA max
Coarse gain register = 2
Coarse gain register = 1
Coarse gain register = 0
VREFIN = 2.1 V, coarse gain register = 2
RISCC = 6 kΩ; see Figure 23
For specified performance
pF max
pF max
Ω max
V min
V max
µA max
pF max
DVCC = 2.7 V to 5.25 V, JEDEC
compliant
Per pin
Per pin
Rev. C | Page 4 of 28
5 Page 
AD5765
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted. Transient currents of up to
100 mA do not cause SCR latch-up.
Table 5.
Parameter
AVDD to AGNDx, DGND
AVSS to AGNDx, DGND
DVCC to DGND
DVCC to AVDD
Digital Inputs to DGND
Digital Outputs to DGND
REFx to AGNDx, PGND
VOUTx to AGNDx
AGNDx to DGND
Operating Temperature Range (TA)
Industrial
Storage Temperature Range
Junction Temperature (TJ max)
Power Dissipation
Lead Temperature
Soldering
Rating
−0.3 V to +7 V
+0.3 V to −7 V
−0.3 V to +7 V
−DVCC to +0.25 V
−0.3 V to DVCC + 0.3 V or 7 V
(whichever is less)
−0.3 V to DVCC + 0.3 V
−0.3 V to AVDD + 0.3 V
AVSS to AVDD
−0.3 V to +0.3 V
−40°C to +105°C
−65°C to +150°C
150°C
(TJ max – TA)/θJA
JEDEC industry standard
J-STD-020
Data Sheet
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those listed in the operational sections
of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL RESISTANCE
θJA is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages.
Table 6. Thermal Resistance
Package Type
θJA θJC Unit
32-Lead TQFP
65 12 °C/W
ESD CAUTION
Rev. C | Page 10 of 28
11 Page | ||
| Páginas | Total 29 Páginas | |
| PDF Descargar | [ Datasheet AD5765.PDF ] | |
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