AD7294BSUZ Analog Devices Inc, AD7294BSUZ Datasheet - Page 33

• Manufacturer Part Number: AD7294BSUZ
• Description: IC ADC 12BIT W/DAC/TEMP 64TQFP
• Manufacturer: Analog Devices Inc
• Type: ADC, DACr

Specifications of AD7294BSUZ

• Resolution (bits): 12 b
• Data Interface: Serial
• Sampling Rate (per Second): 22.22k
• Voltage Supply Source: Analog and Digital
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -55°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 64-TQFP, 64-VQFP
• Sampling Rate: 22.22kSPS
• Input Channel Type: Differential, Single Ended
• Supply Voltage Range - Digital: 4.5V To 5.5V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

T
The AD7294 has temperature offset, 8-bit twos complement regis-
ters for both Remote Channel T
It allows the user to add or subtract an offset to the temperature.
The offset registers for T
registers that store data in a twos complement format. This data
is subtracted from the temperature readings taken by T
and T
before the values are stored in the T
SENSE
SENSE
OFFSET REGISTERS (0x26 AND 0x27)
2 temperature sensors. The offset is implemented
SENSE
1 and T
SENSE
1 and Remote Channel T
SENSE
SENSE
result register.
2 are 8-bit read/write
SENSE
SENSE
1
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2.
The offset registers can be used to compensate for transistors
with different ideality factors because the T
based on the 2N3906 transistor ideality factor. Different
transistors with different ideality factors result in different
offsets within the region of interest, which can be compensated
for by using this register.
Table 33. T
Input
Value (°C)
SENSE
MSB
D7
−32
Offset Data Format
D6
+16
D5
+8
D4
+4
D3
+2
SENSE
D2
+1
results are
D1
+0.5
AD7294
LSB
D0
+0.25