AD5522JSVDZ datasheet(44/60 Pages) AD

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AD5522

Rev. A | Page 44 of 60

Bit

Bit Name

Description

GAIN1

MEASOUT output range. The MEASOUT range defaults to the force voltage span for voltage and current measure-

ments, which includes some overrange to allow for offset correction. The nominal output voltage range is ±11.25 V

with the default offset DAC setting, but changes for other offset DAC settings when GAIN1 = 0. Therefore, the

MEASOUT range can be an asymmetrical bipolar voltage range. GAIN1 = 1 enables a unipolar output voltage

range, which allows the use of asymmetrical supplies or a smaller input range ADC. See Table 10 and Table 11

for more details.

GAIN0

MEASOUT

Function

Measure

Current Gain

Output Voltage Range for VREF = 5 V, Offset DAC = 0xA492

GAIN1 = 0, MEASOUT Gain = 1

GAIN1 = 1, MEASOUT Gain = 0.2

5 or 10

±VDUT (up to 11.25 V)

0 V to (4.5 × VREF)/5

GAIN0 = 0

±VRSENSE × 10 = up to ±11.25 V

0 V to 4.5 V

GAIN0 = 1

±VRSENSE × 5 = up to ±5.625 V

0 V to 2.25 V

TMP ENABLE

Thermal shutdown feature. To disable the thermal shutdown feature, set the TMP ENABLE bit to 0 (thermal

shutdown is enabled by default).

TMP1

The TMP1 and TMP0 bits allow the user to program the temperature that triggers thermal shutdown.

TMP0

TMP

ENABLE

TMP1

TMP0

Action

Thermal shutdown disabled

Thermal shutdown enabled

Shutdown at junction temperature of 130°C (power-on default)

Shutdown at junction temperature of 120°C

Shutdown at junction temperature of 110°C

Shutdown at junction temperature of 100°C

LATCHED

Configure the open-drain pin (CGALM) as a latched or unlatched output pin. When high, this bit configures the

CGALM alarm output as a latched output, allowing it to drive a controller I/O without needing to poll the line

constantly. The power-on default for this pin is unlatched.

Unused bits. Set to 0.

0 (LSB)

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