Rainbow Electronics MAX1243 - Manual (Page 3)

+2.7V to +5.25V, Low-Power, 10-Bit
Serial ADCs in SO-8
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ELECTRICAL CHARACTERISTICS (continued)
(V DD = +2.7V to +5.25V; 73ksps; f
SCLK
= 2.1MHz (50% duty cycle); MAX1242—4.7µF capacitor at REF pin, MAX1243—external
reference; V REF = 2.5V applied to REF pin; T A = T MIN to T MAX ; unless otherwise noted.)
Capacitive Bypass at REF 4.7 µF
Load Regulation (Note 5) 0.35 mV 0mA to 0.2mA output load
REF Temperature Coefficient ±30 ppm/°C MAX1242
REF Short-Circuit Current 30 mA
REF Output Voltage 2.470 2.500 2.530 V T A = +25°C (Note 4)
Power-Supply Rejection (Note 7) PSR V DD = V DD(min) to V DD(max) , full-scale input
1.00 V
DD
+
50mV
Supply Current I DD
3.0
0.8
V
DD
> 3.6V
I
SINK
= 16mA
Output Voltage High
SCLK, CS Input High Voltage V IH
2.0
V
SCLK, CS Input Low Voltage
Capacitive Bypass at REF 0.1 µF
V IL 0.8
V DD
≤
3.6V
V
V OH V DD - 0.5 V
Three-State Leakage Current I
L
±0.01 ±10
I SOURCE = 0.5mA
µA CS = V
DD
Three-State Output Capacitance C OUT 15 pF CS = V
DD
(Note 6)
Output Voltage Low V
OL
0.4
V
PARAMETER SYMBOL MIN TYP MAX UNITS
I
SINK
= 5MA
SHDN Input Mid Voltage V
SM
1.1 V
DD
- 1.1 V
SHDN Voltage, Floating V
FLT
V
DD
/ 2 V
SHDN Max Allowed Leakage,
Mid Input
±100
SHDN = float
nA SHDN = float
SCLK, CS Input Capacitance
Input Voltage Range V
C
IN
15 pF
SHDN Input High Voltage V
SH
V
DD
- 0.4
(Note 6)
V
SHDN Input Low Voltage V
SL
0.4 V
Input Resistance
SHDN Input Current ±4.0
18 25 k
Ω
REF Input Current in Shutdown
µA SHDN = 0V or V
DD
SCLK, CS Input Hysteresis V HYST
±0.01 10 µA SHDN = 0V
CONDITIONS
Input Current
0.2 V
SCLK, CS Input Leakage I
IN
±0.01 ±1
100 150 µA
µA V
IN
= 0V or V
DD
Operating mode (MAX1242) V DD = 5.25V
Operating mode (MAX1243)
V DD = 5.25V
V DD = 3.6V
Power-down
V DD = 5.25V
V DD = 3.6V
Supply Voltage V DD V
V DD = 3.6V
1.9 10
3.5 15
±0.3
1.6 2.5
0.9 1.5
1.8 3.0
1.4 2.0
2.7 5.25
mA
µA
mV
Operating mode (MAX1242)
EXTERNAL REFERENCE (VREF = 2.5V)
INTERNAL REFERENCE (MAX1242 only)
DIGITAL INPUTS: SCLK, C CS S , S SH HD DN N
DIGITAL OUTPUT: DOUT
POWER REQUIREMENTS