ADADC80-12 Analog Devices Inc, ADADC80-12 Datasheet - Page 11

• Manufacturer Part Number: ADADC80-12
• Description: IC ADC 12-BIT INTEGRATED 32-CDIP
• Manufacturer: Analog Devices Inc

Specifications of ADADC80-12

• Data Interface: Parallel
• Rohs Status: RoHS non-compliant
• Number Of Bits: 12
• Sampling Rate (per Second): 40k
• Number Of Converters: 1
• Power Dissipation (max): 800mW
• Voltage Supply Source: Analog and Digital, Dual ±
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 32-CDIP (0.900", 22.86mm)
• Resolution (bits): 12bit
• Input Channel Type: Single Ended
• Supply Current: 70mA
• Digital Ic Case Style: DIP
• No. Of Pins: 32
• Operating Temperature Range: -25°C To +85°C
• Number Of Elements: 1
• Resolution: 12Bit
• Architecture: SAR
• Input Polarity: Unipolar/Bipolar
• Input Type: Voltage
• Rated Input Volt: 5/10/±2.5/±5/±10V
• Differential Input: No
• Power Supply Requirement: Dual
• Single Supply Voltage (typ): Not RequiredV
• Single Supply Voltage (min): Not RequiredV
• Single Supply Voltage (max): Not RequiredV
• Dual Supply Voltage (typ): ±15/5V
• Dual Supply Voltage (min): ±14/4.75V
• Dual Supply Voltage (max): ±16/5.25V
• Differential Linearity Error: ±0.5LSB(Typ)
• Integral Nonlinearity Error: ±0.012%FSR
• Operating Temp Range: -25C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Pin Count: 32
• Package Type: SBCDIP
• Input Signal Type: Single-Ended
• Lead Free Status / Rohs Status: Not Compliant

CALIBRATION
External zero adjustment and gain adjustment potentiometers,
connected as shown in Figure 13 and Figure 14, are used for
device calibration. To prevent interaction of these two adjustments,
zero is always adjusted first and gain second. Zero is adjusted
with the analog input near the most negative end of the analog
range (0 for unipolar and −FS for bipolar input ranges). Gain is
adjusted with the analog input near the most positive end of the
analog range.
0 V to 10 V Range
Set analog input to +1 LSB = 0.0024 V; adjust zero for digital
output = 111111111110. Zero is now calibrated. Set analog
+15V
+15V
–15V
–15V
+
+
+
+
24
17
15
25
24
17
15
25
REF OUT
(6.3V)
15V OR 12V
ANALOG
GND
–15V OR
–12V
REF OUT
(6.3V)
15V OR 12V
ANALOG
GND
–15V OR
–12V
+5V
Figure 13. Analog and Power Connections for Unipolar 0 V to 10 V Input Range
+5V
Figure 14. Analog and Power Connections for Bipolar ±10 V Input Range
10kΩ
10kΩ
–15V
+15V
–15V
+15V
5V DIGITAL
5V DIGITAL
SUPPLY
SUPPLY
ADADC80
ADADC80
9
9
+
+
REF
REF
10MΩ
10MΩ
DIGITAL
DIGITAL
10
10
GND
GND
ADJUST
ADJUST
0.01µF
0.01µF
GAIN
GAIN
Rev. E | Page 11 of 16
16
16
BIPOLAR
BIPOLAR
OFFSET
OFFSET
OUT
OUT
12
12
input to +FSR − 2 LSB = 9.9952 V; adjust gain for 000000000001
digital output code. Full-scale gain is now calibrated. For half-
scale calibration check, set analog input to 5.0000 V; digital
output code should be 011111111111.
−10 V to +10 V Range
Set analog input to −9.9951 V; adjust zero for 111111111110
digital output (complementary offset binary) code. Set analog
input to +9.9902 V; adjust gain for 000000000001 digital output
(complementary offset binary) code. For half-scale calibration
check, set analog input to 0.0000 V; digital output (complemen-
tary offset binary) code should be 011111111111.
SPAN
SPAN
ANALOG
20V
20V
INPUT
IN
IN
14
14
DAC
DAC
SAR
SPAN
SAR
SPAN
10V
10V
ANALOG
IN
IN
INPUT
13
13
COMPARATOR
COMPARATOR
IN
IN
11
11
1.8MΩ
1.8MΩ
COMPARATOR
COMPARATOR
+15V
+15V
–15V
–15V
10kΩ
10kΩ
ADADC80