AD7890AR-2 Analog Devices Inc, AD7890AR-2 Datasheet - Page 10

• Manufacturer Part Number: AD7890AR-2
• Description: A/D Converter (A-D) IC
• Manufacturer: Analog Devices Inc
• Type: Data Acquisition System (DAS)r

Specifications of AD7890AR-2

• No. Of Bits: 12 Bit
• No. Of Channels: 8
• Rohs Status: RoHS non-compliant
• Resolution (bits): 12 b
• Sampling Rate (per Second): 117k
• Data Interface: Serial
• Voltage Supply Source: Single Supply
• Voltage - Supply: 0 V ~ 2.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-SOIC (7.5mm Width)

DSCC FORM 2234
APR 97
DEFENSE SUPPLY CENTER COLUMBUS
MICROCIRCUIT DRAWING
COLUMBUS, OHIO 43216-5000
STANDARD
FIGURE 3. Load circuit for access time and bus relinquish time.
+FSR/2 – 1 LSB (9.995117 V)
+FSR/2 – 2 LSBs (9.990234 V)
+FSR/2 – 3 LSBs (9.985352 V)
AGND + 1 LSB (0.004883 V)
AGND (0.000000 V)
AGND – 1 LSB (0.004883 V)
-FSR/2 + 3 LSBs (-9.985352 V)
-FSR/3 + 2 LSBs (-9.990234 V)
-FSR/2 + 1 LSB (-9.995117 V)
Analog Input
FIGURE 2. Ideal in/output code table.
Digital output code transition
011 . . . 110 to 011 . . . 111
011 . . . 101 to 011 . . . 110
011 . . . 100 to 011 . . . 101
000 . . . 000 to 000 . . . 000
111 . . . 111 to 000 . . . 000
111 . . . 110 to 111 . . . 111
100 . . . 010 to 100 . . . 011
100 . . . 001 to 100 . . . 010
100 . . . 000 to 000 . . . 000
SIZE
A
REVISION LEVEL
C
SHEET
5962-95615
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