參數(shù)資料
型號： AD5749ACPZ-RL7
廠商： Analog Devices Inc
文件頁數(shù)： 8/28頁
文件大?。?/td> 0K
描述： IC CURRENT OUT DVR 32-LFCSP
標(biāo)準(zhǔn)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(biāo)準(zhǔn)包裝
其它名稱： AD5749ACPZ-RL7DKR
AD5749
Data Sheet
Rev. B | Page 16 of 28
THEORY OF OPERATION
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 hardware ranges
are programmed using the range pins (R0 to R3). The analog
input to the AD5749 is provided from a low voltage, single-supply
DAC (0 V to 4.096 V), which is internally conditioned to provide
the desired output current range.
The output current range is programmable across two ranges:
0 mA to 24 mA, or 4 mA to 20 mA. An overrange of 2% is
available on the 0 mA to 24 mA and 4 mA to 20 mA current
ranges. The output range is selected by programming the R3
to R0 bits in the control register (see Table 7 and Table 8).
Figure 31 and Figure 32 show a typical configuration of AD5749
in software mode and in hardware mode, respectively, in an
output module system. The HW SELECT pin chooses whether
the part is configured in software or hardware mode. The analog
input to the AD5749 is provided from a low voltage, single-supply
DAC such as the AD506x or AD566x, which can provide an
output range of 0 V to 4.096 V. The supply and reference for the
DAC, as well as the reference for the AD5749, can be supplied
from a reference such as the ADR392. The AD5749 can operate
with a single supply up to 55 V.
SOFTWARE MODE
The software-selectable output ranges are 0 mA to 24 mA, or
4 mA to 20 mA.
Figure 31. Typical System Configuration in Software Mode (Pull-Up Resistors Not Shown for Open-Drain Outputs)
08923-
032
VIN
SCLK
VDD
REFIN
SDI/DIN
SDO
SYNC1
SYNC
SDO
SDIN
SCLK
MCU
STATUS REGISTER
VREF
HW SELECT
FAULT
ADP1720
ADR392
AVDD
AGND
AVDD
GND
AD5749
AD506x
AD566x
SERIAL
INTERFACE
IOUT OPEN FAULT
OVERTEMP FAULT
IOUT
RANGE
SCALE
IOUT
0mA TO 20mA,
0mA TO 24mA,
4mA TO 20mA
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