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| 型號(hào)： | AD5750-2BCPZ-RL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 22/36頁 |
| 文件大小： | 0K |
| 描述： | IC CURR/VOLT OUT DRVR 32LFCSP |
| 標(biāo)準(zhǔn)包裝： | 1,500 |
| 放大器類型： | 儀表 |
| 電路數(shù)： | 1 |
| 轉(zhuǎn)換速率： | 2 V/µs |
| 電流 - 電源： | 5.2mA |
| 電流 - 輸出 / 通道： | 24mA |
| 電壓 - 電源，單路/雙路(±)： | ±12 V ~ 24 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（5x5） |
| 包裝： | 帶卷 (TR) |
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Data Sheet
AD5750/AD5750-1/AD5750-2
Rev. E | Page 29 of 36
DETAILED DESCRIPTION OF FEATURES
OUTPUT FAULT ALERT—SOFTWARE MODE
with one FAULT pin; this is an open-drain output allowing several
to one pull-up resistor for global fault detection. In software mode,
the FAULT pin is forced active low by any one of the following
fault scenarios:
The voltage at IOUT attempts to rise above the compliance
range due to an open-loop circuit or insufficient power supply
voltage. The internal circuitry that develops the fault output
avoids using a comparator with window limits because this
requires an actual output error before the fault output becomes
active. Instead, the signal is generated when the internal
amplifier in the output stage has less than approximately
1 V of remaining drive capability. Thus, the fault output
activates slightly before the compliance limit is reached.
Because the comparison is made within the feedback loop
of the output amplifier, the output accuracy is maintained
by its open-loop gain, and an output error does not occur
before the fault output becomes active.
A short is detected on the voltage output pin (VOUT). The
short-circuit current is limited to 15 mA.
An interface error is detected due to PEC failure. See the
Packet Error Checking section.
exceeds approximately 150°C.
OUTPUT FAULT ALERT—HARDWARE MODE
equipped with three fault pins: VFAULT, IFAULT, and TEMP.
AD5750-2 devices to be connected together to one pull-up resistor
for global fault detection. In hardware control mode, these fault
pins are forced active by any one of the following fault scenarios:
An open circuit is detected. The voltage at IOUT attempts
to rise above the compliance range, due to an open-loop
circuit or insufficient power supply voltage. The internal
circuitry that develops the fault output avoids using a
comparator with window limits because this requires an
actual output error before the fault output becomes active.
Instead, the signal is generated when the internal amplifier
in the output stage has less than approximately 1 V of
remaining drive capability. Thus, the fault output activates
slightly before the compliance limit is reached. Because the
comparison is made within the feedback loop of the output
amplifier, the output accuracy is maintained by its open-
loop gain, and an output error does not occur before the
fault output becomes active. If this fault is detected, the
IFAULT pin is forced low.
A short is detected on the voltage output pin (VOUT). The
short-circuit current is limited to 15 mA. If this fault is
detected, the VFAULT pin is forced low.
exceeds approximately 150°C. If this fault is detected, the
TEMP pin is forced low.
VOLTAGE OUTPUT SHORT-CIRCUIT PROTECTION
Under normal operation, the voltage output sinks and sources
up to 12 mA and maintains specified operation. The maximum
current that the voltage output delivers is 15 mA; this is the
short-circuit current.
ASYNCHRONOUS CLEAR (CLEAR)
CLEAR is an active high clear that allows the voltage output to
be cleared to either zero-scale code or midscale code and is
user-selectable via the CLRSEL pin or the CLRSEL bit of the input
shift register, as described in Table 8. (The clear select feature is
a logical OR function of the CLRSEL pin and the CLRSEL bit).
The current loop output clears to the bottom of its programmed
range. When the CLEAR signal is returned low, the output returns
to its programmed value or to a new programmed value. A clear
operation can also be performed via the clear command in the
control register (see Table 11).
Table 11. CLRSEL Options
CLRSEL
Output Clear Value
Unipolar Output Voltage Range
Unipolar Current Output Range
Bipolar Output Range
Bipolar Current Output Range
0
0 V
Zero scale; for example,
4 mA on the 4 mA to 20 mA range,
0 mA on the 0 mA to 20 mA range
Negative full scale
Zero scale; for example,
24 mA on the ±24 mA range
1
Midscale
Midscale; for example,
12 mA on the 4 mA to 20 mA range,
10 mA on the 0 mA to 20 mA range
0 V
Midscale; for example,
0 mA on the ±24 mA range
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