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| 型號： | AD5749ACPZ-RL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 1/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CURRENT OUT DVR 32-LFCSP |
| 標準包裝： | 1 |
| 放大器類型： | 儀表 |
| 電路數(shù)： | 1 |
| 電流 - 電源： | 5.2mA |
| 電流 - 輸出 / 通道： | 24mA |
| 電壓 - 電源，單路/雙路(±)： | 10.8 V ~ 55 V |
| 工作溫度： | -40°C ~ 105°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 32-VFQFN 裸露焊盤，CSP |
| 供應(yīng)商設(shè)備封裝： | 32-LFCSP-VQ（5x5） |
| 包裝： | 標準包裝 |
| 其它名稱： | AD5749ACPZ-RL7DKR |
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Industrial Current Out Driver, Single-Supply,
55 V Maximum Supply, Programmable Ranges
Data Sheet
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.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
2010–2013 Analog Devices, Inc. All rights reserved.
FEATURES
Current output ranges: 0 mA to 24 mA or 4 mA to 20 mA
±0.03% FSR typical total unadjusted error (TUE)
±5 ppm/°C typical output drift
2% overrange
Flexible serial digital interface
On-chip output fault detection
PEC error checking
Asynchronous CLEAR function
Power supply range
AVDD: 12 V (± 10%) to 55 V (maximum)
Output loop compliance to AVDD 2.75 V
Temperature range: 40°C to +105°C
32-lead, 5 mm × 5 mm LFCSP package
APPLICATIONS
Process control
Actuator control
PLCs
FUNCTIONAL BLOCK DIAGRAM
Figure 1.
GENERAL DESCRIPTION
The AD5749 is a single channel, low cost, precision, current output
driver with hardware or software programmable output ranges.
The software ranges are configured via an SPI-/MICROWIRE-
compatible serial interface. The AD5749 targets applications in
PLC and industrial process control. The analog input to the
AD5749 is provided from a low voltage, single-supply digital-to-
analog converter (DAC) and is internally conditioned to provide
the desired output current/voltage range.
The output current range is programmable across two current
ranges: 0 mA to 24 mA, or 4 mA to 20 mA. Current output is
open-circuit protected and can drive inductive loads of 0.1 H.
The device is specified to operate with a power supply range
from 10.8 V to 55 V. Output loop compliance is 0 V to AVDD
2.75 V.
The flexible serial interface is SPI and MICROWIRE compatible
and can be operated in 3-wire mode to minimize the digital
isolation required in isolated applications. The interface also
features an optional PEC error checking feature using CRC-8
error checking, useful in industrial environments where data
communication corruption can occur.
The device also includes a power-on reset function ensuring
that the device powers up in a known state and an asynchron-
ous CLEAR pin that sets the outputs to the low end of the
selected current range.
An HW SELECT pin is used to configure the part for hardware
or software mode on power-up.
Table 1. Related Devices
Part No.
Description
Industrial current/voltage output (I/V) driver with
programmable ranges
Industrial I/V output driver, single-supply, 55 V maximum
supply, programmable ranges
Industrial I/V output driver with programmable ranges
Single-channel, 12-/16-bit, serial input, current source
output DAC
Single-channel, 12-/16-bit, serial input, I/V output DAC
08923-
001
*DENOTES SHARED PIN. SOFTWARE MODE DENOTED BY REGULAR TEXT,
HARDWARE MODE DENOTED BY ITALIC TEXT. FOR EXAMPLE, FOR
FAULT/TEMP PIN, IN SOFTWARE MODE, THIS PIN TAKES ON FAULT
FUNCTION. IN HARDWARE MODE, THIS PIN TAKES ON TEMP FUNCTION.
CLEAR
DVCC GND
AVDD GND
CLRSEL
HW SELECT
VIN
VREF
OVERTEMP
IOUT OPEN FAULT
RESET
R2
RSET
AVDD
R3
AD5749
IOUT
POWER-
ON RESET
IOUT
OPEN FAULT
IOUT RANGE
SCALING
STATUS
REGISTER
INPUT SHIFT
REGISTER
AND
CONTROL
LOGIC
SCLK/OUTEN*
SDIN/R0*
SYNC/RSET*
SDO/VFAULT*
FAULT/TEMP*
NC/IFAULT*
AD2/R1*
AD1/R2*
AD0/R3*
REXT1
REXT2
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