Datasheet

ppm/°C
MAX1240/MAX1241
+2.7V, Low-Power,
12-Bit Serial ADCs in 8-Pin SO
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ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +2.7V to +3.6V (MAX1240); V
DD
= +2.7V to +5.25V (MAX1241); 73ksps, f
S
CLK
= 2.1MHz (50% duty cycle); MAX1240—4.7µF
capacitor at REF pin, MAX1241—external reference; V
REF
= 2.500V applied to REF pin; T
A
= T
MIN
to T
MAX
; unless otherwise noted.)
V
IN
= 0V or V
DD
µA
T
A
= +25°C
µA100 150
±0.01 ±1I
IN
SCLK, CS Input Leakage
V0.2
Input Current
CONDITIONS
V
SHDN
= 0V
µA±0.01 10
V
HYST
SCLK, CS Input Hysteresis
V
SHDN
= 0V or V
DD
µA
REF Input Current in Shutdown
kΩ18 25
±4.0
SHDN Input Current
Input Resistance
V0.4V
SL
SHDN Input Low Voltage
V
(Note 5)
V
DD
- 0.4V
SH
SHDN Input High Voltage
pF15C
IN
VREF Output Voltage
SCLK, CS Input Capacitance
SHDN = unconnected
nA
SHDN = unconnected
±100
SHDN Max Allowed Leakage,
Mid Input
VV
DD
/2V
FLT
SHDN Voltage, Unconnected
V1.1 V
DD
- 1.1V
SM
SHDN Input Mid Voltage
I
SINK
= 5mA
UNITSMIN TYP MAXSYMBOLPARAMETER
V
0.4
V
OL
Output Voltage Low
CS = V
DD
(Note 5)
pF15C
OUT
Three-State Output Capacitance
CS = V
DD
µA
I
SOURCE
= 0.5mA
±0.01 ±10I
L
Three-State Leakage Current
VV
DD
- 0.5V
OH
V
V
DD
≤ 3.6V
0.8V
IL
µF0.1Capacitive Bypass at REF
SCLK, CS Input Low Voltage
V
2.0
V
IH
SCLK, CS Input High Voltage
Output Voltage High
I
SINK
= 16mA
V
DD
> 3.6V (MAX1241)
0.8
3.0
2.480 2.500 2.520
VInput Voltage Range
1.00
V
DD
+
50mV
MAX1240AC/BC
ppm/°CREF Temperature Coefficient
±30 ±50
REF Short-Circuit Current 30
MAX1240AE/BE ±30 ±60
MAX1240AM/BM ±30 ±80
0mA to 0.2mA output loadLoad Regulation (Note 4) 0.35
mA
µFCapacitive Bypass at REF 4.7
MAX1240C ±30
DIGITAL OUTPUT: DOUT
DIGITAL INPUTS: SCLK,
CCSS
,
SSHHDDNN
EXTERNAL REFERENCE (V
REF
= 2.500V)
INTERNAL REFERENCE (MAX1240 only)