ADC912A Datasheet, PDF (7/16 Pages) Analog Devices – CMOS Microprocessor-Compatible 12-Bit A/D Converter

0.4
0.2
0
–0.2
–0.4
0
1024
2048
3072
4096
DIGITAL OUTPUT CODE
TPC 1. Nonlinearity Error vs. Digital
Output Code
Typical Performance Characteristics–ADC912A
5
4
3
2
1
0
–1
–2
–3
–4
–5
–75
–50 –25 0 25 50 75 100 125
TEMPERATURE – C
TPC 2. Offset Error vs. Temperature
6
5
4
3
2
1
0
–1
–2
–3
–4
–75
–50 –25 0 25 50 75 100 125
TEMPERATURE – C
TPC 3. Gain Error vs. Temperature
6
5
V_DD @ 5.25V
4
3
2
CS, RD = LOGIC HIGH
A_IN = 10V
1 _{CLK = 1MHz XTAL}
0
–1
–2
I_SS @ V _SS = –15.75V
–3
–4
–75
–50 –25 0 25 50 75
TEMPERATURE – C
100 125
TPC 4. Supply Current vs.
Temperature
80
P_DISS = IDD ؋ 5 + ISS ؋ 12
C_OUT = 20pF
f_CONV = 1/13 f_{CLK IN}
T_A = 25 C
60 EXT CLK IN
40
0
1k
10k
100k
1M
CLK IN FREQUENCY – Hz
TPC 5. Power Dissipation vs. CLK IN
Frequency
50
40
30
I_SINK
20
10
0
–10
–20 _ISOURCE
–30
–40
–50
0
1
2
3
4
5
V_O OUTPUT VOLTAGE – Volts
TPC 6. Digital Output Current vs.
Output Voltage
256
256 SUCCESSIVE
CONVERSIONS
192
WITH
A_IN = 4.99756V
128
64
0
2045 2046 2047 2048 2049
OUTPUT CODE – Decimal
TPC 7. Code Repetition
100
90
10
0%
TRANSITION NOISE
ANALOG INPUT
TPC 8. Transition Noise Cross Plot
4 V_DD = +5V
V_SS = –12V
T_A = 25؇C
2
0
–2
–4
20
15
10
5
0
CONVERSION TIME – ␮s
TPC 9. Linearity Error vs. Conversion
Time
REV. B
–7–