AD977AR Analog Devices Inc, AD977AR Datasheet - Page 15

• Manufacturer Part Number: AD977AR
• Description: A/D Converter (A-D) IC
• Manufacturer: Analog Devices Inc

Specifications of AD977AR

• Package/case: 20-SOIC
• Features: 16?Bit, 100kSPS, BiCMOS ADC
• Interface Type: Serial
• Leaded Process Compatible: No
• Number Of Bits: 16
• Number Of Channels: 1
• Peak Reflow Compatible (260 C): No
• Rohs Status: RoHS non-compliant
• Sampling Rate (per Second): 100k
• Data Interface: Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 100mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (0.300", 7.50mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With: EVAL-AD977CB - BOARD EVAL FOR AD977EVAL-AD977ACB - BOARD EVAL FOR AD977A
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Description
Full-Scale Range
Least Significant Bit
+Full Scale (FS–1 LSB)
Midscale
One LSB Below Midscale –305 µV
–Full Scale
AD977
Input Range
–9.890 V to 9.90 V
–4.943 V to 4.995 V
–3.295 V to 3.330 V
0.008 V to 9.946 V
0.004 V to 5.023 V
0.003 V to 4.010 V
V
IN
33.2k
100
2.2 F
200
2.2 F
± 10 V
305 µV
9.999695 V 4.999847 V 3.333231 V
0 V
–10 V
Offset Error
A/B/C Grade
± 25 mV/±25 mV
± 25 mV/±25 mV
± 25 mV/±25 mV
± 10 mV/±10 mV
± 10 mV/±10 mV
± 10 mV/±10 mV
Table IV. Input Ranges, Offset and Full-Scale Errors Without External Resistors
AD8031
± 5 V
153 µV
0 V
–153 µV
–5 V
R1
AGND1
R2
R3
AGND2
CAP
REF
AD977A
IN
IN
IN
Table III. Output Codes and Ideal Input Voltages
0 V
–3.333333 V 0 V
Full-Scale Error
A/B/C Grade
± 3.33 V
102 µV
–102 µV
± 0.75%/± 0.50%
± 0.75%/± 0.50%
± 0.75%/± 0.50%
± 0.75%/± 0.50%
± 0.75%/± 0.50%
± 0.75%/± 0.50%
Analog Input
V
IN
33.2k
200
0 V to 10 V
153 µV
9.999847 V
5 V
4.999847 V
2.2 F
100
2.2 F
AD8031
AD977A
Input Range
–9.800 V to 9.970 V
–4.900 V to 4.985 V
–3.267 V to 3.323 V
0.007 V to 9.893 V
0.004 V to 5.039 V
0.003 V to 4.016 V
0 V to 5 V
76 µV
4.999924 V
2.5 V
2.499924 V
0 V
R1
AGND1
R2
R3
AGND2
CAP
REF
AD977A
IN
IN
IN
0 V to 4 V
61 µV
3.999939 V 0111 1111 1111 1111 1111 1111 1111 1111
2 V
1.999939 V 1111 1111 1111 1111 0111 1111 1111 1111
0 V
V
33.2k
Offset Error
A/B/C Grade
± 40 mV/±40 mV
± 40 mV/±40 mV
± 40 mV/±40 mV
± 10 mV/±10 mV
± 10 mV/±10 mV
± 10 mV/±10 mV
IN
100
±
Two’s Complement Straight Binary
(SB/BTC LOW)
0000 0000 0000 0000 1000 0000 0000 0000
1000 0000 0000 0000 0000 0000 0000 0000
AD8031
2.2 F
200
2.2 F
AD977/AD977A
Digital Output
±
CAP
R1
AGND1
R2
R3
REF
AGND2
AD977A
Full-Scale Error
A/B/C Grade
± 0.80%/± 0.55%
± 0.80%/± 0.55%
± 0.80%/± 0.55%
± 0.75%/± 0.50%
± 0.75%/± 0.50%
± 0.75%/± 0.50%
(SB/BTC HIGH)
IN
IN
IN
±