煮鱼的家常做法Single Channel, 16-Bit, Serial Input,
Current Source & Voltage Output DAC Preliminary Technical Data AD5422
Rev. PrE
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responsibility is assumed by Analog Devices for its u, nor for any infringements of patents or other rights of third parties that may result from its u. Specifications subject to change without notice. No licen is granted by implication or otherwi under any patent or patent rights of Analog Devices. T rademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, M A 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.461.3113 ©2007 Analog Devices, Inc. All rights rerved.
FEATURES
16-Bit Resolution and Monotonicity
Current Output Ranges: 4–20mA, 0–20mA or 0–24mA 0.1% typ Total Unadjusted Error (TUE)
5ppm/°C Output Drift
Voltage Output Ranges: 0-5V, 0-10V, ±5V, ±10V,注册会计师通过率
10% over-range
0.05% Total Unadjusted Error (TUE)
3ppm/°C Output Drift
Flexible Serial Digital Interface
On-Chip Output Fault Detection
On-Chip Reference (10 ppm/°C Max)
Asynchronous CLEAR Function
Power Supply Range
AV DD : 10.8V to 40 V
AV SS : -26.4V to -3V/0V
Output Loop Compliance to AV DD – 2.5 V Temperature Range: -40°C to +85°C
TSSOP and LFCSP Packages
APPLICATIONS
Process Control
Actuator Control
PLC GENERAL DESCRIPTION
The AD5422 is a low-cost, precision, fully integrated 16-bit converter offering a programmable current source and programmable voltage output designed to meet the requirements of industrial process control applications.
The output current range is programmable to 4mA to 20 mA,
0mA to 20mA or an overrange function of 0mA to 24mA. Voltage output is provided from a parate
pin that can be configured to provide 0V to 5V, 0V to 10V, ±5V or ±10V output ranges, an over-range of 10% is available on all ranges. Analog outputs are short and open circuit protected and can drive capacitive loads of 1uF and inductive loads of 1H.
The device is specified to operate with a power supply range from 10.8 V to 40 V. Output loop compliance is 0 V to AV DD – 2.5 V.
The flexible rial interface is SPI and MICROWIRE compatible and can be operated in 3-wire mode to minimize the digital isolation required in isolated applications.
The device also includes a power-on-ret function ensuring that the device powers up in a known state and an asynchronous CLEAR pin which ts the outputs to zero-scale / mid-scale voltage output or the low end of the lected current range.
The total output error is typically ±0.1% in current mode and ±0.05% in voltage mode.
华东师范大学研究生
Table 1. Related Devices
Part Number Description
AD5412 Single Channel, 12-Bit, Serial
Input Current Source and
单务Voltage Output DAC
AD5420 Single Channel, 16-Bit, Serial
Input Current Source DAC
AD5410 Single Channel, 12-Bit, Serial
Input Current Source DAC
AD5422
Preliminary Technical Data
Rev. PrE | Page 2 of 37
TABLE OF CONTENTS
.
.........................................................1 1 .2 Functional 4 AC 7 8 Absolute .10 10 Pin Configuration and 11 Typical Performance Characteristics Voltage output ...............13 Typical Performance Characteristics current output ...............17 Typical Performance Characteristics general ............................22 Theory 24 24 .28 28
..............................29 29 29 31 .31 voltage output short 31 Asynchronous Clear (CLEAR).................................................31 31 External current 31 Voltage 31 Digital 31 External 31 digital Slew 32 I OUT 32 33 driving 33 Transient 33 33 Galvanically
.............................33 33 Thermal and 34 35 Ordering Guide.. (35)
REVISION HISTORY
PrE – Preliminary Version, November 22, 2007
Preliminary Technical Data
AD5422
Rev. PrE | Page 3 of 37黎姿
FUNCTIONAL BLOCK DIAGRAM
V OUT I OUT LATCH SCLK SDIN SDO
CC
AGND CLEAR FAULT BOOST
REFOUT REFIN SENSE
SENSE
CLEAR SELECT R SET DV CC C COMP2C COMP1
DGND**LFCSP Package
Figure 1.
AD5422
Preliminary Technical Data
Rev. PrE | Page 4 of 37
SPECIFICATIONS
AV DD = 10.8V to 40V , AV SS = -26.4V to -3V/0V , AV DD + |AV SS | < 52.8V , AGND = DGND = 0 V , REFIN= +5 V external; DV CC = 2.7 V to 5.5 V , V OUT : R L = 2 kΩ, C L = 200 pF, I OUT : R L = 300Ω, H L = 50mH; all specifications T MIN to T MAX , ±10 V / 0 to 24 mA range unless otherwi noted. Table 2.
崔颢黄鹤楼Parameter Value 1 Unit Test Conditions/Comments
VOLTAGE OUTPUT
Output Voltage Ranges 0 to 5 V 0 to 10 V -5 to +5 V -10 to +10 V ACCURACY Output unloaded Bipolar Output Resolution 16 Bits Total Unadjusted Error (TUE) 0.1 % FSR max Over temperature, supplies, and time, typically 0.05%
FSR
繁花盛开TUE TC 2 ±3 ppm typ Relative Accuracy (INL) ±0.012 % FSR max Differential Nonlinearity (DNL) ±1 LSB max Guaranteed monotonic Bipolar Zero Error ±5 mV max @ 25°C, error at other temperatures obtained using
bipolar zero TC
Bipolar Zero TC 2
±3 ppm FSR/°C max Zero-Scale Error ±1 mV max @ 25°C, error at other temperatures obtained using zero
scale TC
Zero-Scale TC 2
±3 ppm FSR/°C max Gain Error ±0.05 % FSR max @ 25°C, error at other temperatures obtained using gain
TC
Gain TC 2 ±8 ppm FSR/°C max Full-Scale Error 0.05 % FSR max @ 25°C, error at other temperatures obtained using gain
TC
Full-Scale TC 2 ±3 ppm FSR/°C max Unipolar Output AV SS = 0 V Resolution 16 Bits Total Unadjusted Error (TUE) 0.1 % FSR max Over temperature, supplies, and time, typically 0.05%
FSR
Relative Accuracy (INL) ±0.012 % FSR max Differential Nonlinearity (DNL) ±1 LSB max Guaranteed monotonic (at 16 bit-resolution) Zero Scale Error +10 mV max @ 25°C, error at other temperatures obtained using gain
TC
Zero Scale TC 2
±3 ppm FSR/°C max Offt Error ±10 mV max Gain Error ±0.05 % FSR max @ 25°C, error at other temperatures obtained using gain
TC
Gain TC 2
±3 ppm FSR/°C max Full-Scale Error 0.05 % FSR max @ 25°C, error at other temperatures obtained using gain
TC
Full-Scale TC 2
±3 ppm FSR/°C max
OUTPUT CHARACTERISTICS 2
eadroom 0.8 V max 0.5 V typ Output Voltage TC ±3 ppm FSR/°C max Output Voltage Drift vs. Time ±12 ppm FSR/500 hr typ Vout = ¾ of Full-Scale ±15 ppm FSR/1000 hr typ Short-Circuit Current 12 mA typ
Preliminary Technical Data
AD5422
Rev. PrE | Page 5 of 37
Parameter Value 1 Unit Test Conditions/Comments Load 2 kΩ min For specified performance Capacitive Load Stability R L = ∞ 20 nF max R L = 2 kΩ TBD nF max R L = ∞ 1 µF max External compensation capacitor of 4nF connected. DC Output Impedance 0.3 Ω typ Power-On Time 10 µs typ DC PSRR TBD µV/V
CURRENT OUTPUT
Output Current Ranges 0 to 24 mA 0 to 20 mA 4 to 20 mA ACCURACY Resolution 16 Bits Total Unadjusted Error (TUE) ±0.3 % FSR max Over temperature, supplies, and time, typically 0.1% FSR TUE TC 2 ±5 ppm/°C typ Relative Accuracy (INL) ±0.012 % FSR max Differential Nonlinearity (DNL) ±1 LSB max Guaranteed monotonic Offt Error ±0.05 % FSR max Offt Error Drift ±5 µv/°C typ Gain Error ±0.02 % FSR max @ 25°C, error at other temperatures obtained using gain
TC
Gain TC 2 ±8 ppm FSR/°C max Full-Scale Error 0.05 % FSR max @ 25°C, error at other temperatu
res obtained using gain
TC
Full-Scale TC 2 ±8 ppm FSR/°C
OUTPUT CHARACTERISTICS 2
Current Loop Compliance Voltage AVDD - 2.5 V max Output Current Drift vs. Time TBD ppm FSR/500 hr typ TBD ppm FSR/1000 hr typ Resistive Load TBD Ω max Inductive Load 1 H max DC PSRR 10 µA/V max Output Impedance 50 MΩ typ
REFERENCE INPUT/OUTPUT
Reference Input 2 Reference Input Voltage 5 V nom ±1% for specified performance DC Input Impedance 30 kΩ min Typically 40 kΩ Reference Range 4 to 5 V min to V max Reference Output Output Voltage 4.998 to 5.002 V min to V max @ 25°C Reference TC ±10 ppm/°C max Output Noi (0.1 Hz to 10 Hz)2 18 µV p-p typ
Noi Spectral Density 2
120 nV/√Hz typ @ 10 kHz Output Voltage Drift vs. Time 2 ±40 ppm/500 hr typ ±50 ppm/1000 hr typ Capacitive Load TBD nF max Load Current 5 mA typ Short Circuit Current 7 mA typ Line Regulation 2 10 ppm/V typ
Load Regulation 2
TBD ppm/mA Thermal Hysteresis 2 TBD ppm
11的寓意
