MAX1202 Datasheet, PDF (4/24 Pages) Maxim Integrated Products – 5v, 8-cHANNEL, sERIAL, 12-bIT adcS WITH 3v dIGITAL iNTERFACE

5V, 8-Channel, Serial, 12-Bit ADCs
with 3V Digital Interface
ELECTRICAL CHARACTERISTICS (continued)
(V_DD = +5V ±5%, VL = 2.7V to 3.6V; V_SS = 0V or -5V ±5%; f_SCLK = 2.0MHz, external clock (50% duty cycle); 15 clocks/conversion
cycle (133ksps); MAX1202—4.7µF capacitor at REF pin; MAX1203—external reference, V_REF = 4.096V applied to REF pin;
T_A = T_MIN to T_MAX; unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
EXTERNAL REFERENCE AT REFADJ
Internal compensation mode
0
Capacitive Bypass at REF
µF
External compensation mode
4.7
Reference-Buffer Gain
MAX1202
MAX1203
1.68
V/V
1.64
REFADJ Input Current
MAX1202
MAX1203
±50
µA
±5
POWER REQUIREMENTS
µA
Positive Supply Voltage
V_DD
5 ±5%
V
Negative Supply Voltage
V_SS
0 or -5 ±5%
V
Operating mode
1.5
2.5
mA
Positive Supply Current
I_DD Fast power-down (Note 9)
Full power-down (Note 9)
30
70
µA
µA
2
10
Negative Supply Current
Operating mode and fast power-down
I_SS
Full power-down
50
µA
10
Logic Supply Voltage
VL
2.70
5.25
V
Logic Supply Current (Notes 6, 10) I_VL
VL = V_DD = 5V
10
µA
Positive Supply Rejection
(Note 11)
PSR
V_DD = 5V ±5%; external reference, 4.096V;
full-scale input
±0.06 ±0.5 mV
Negative Supply Rejection
(Note 11)
PSR
V_SS = -5V ±5%; external reference, 4.096V;
full-scale input
±0.01 ±0.5 mV
Logic Supply Rejection
(Note 12)
PSR External reference, 4.096V; full-scale input
±0.06 ±0.5 mV
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