Datasheet

MAX1245
+2.375V, Low-Power, 8-Channel,
Serial 12-Bit ADC
_______________________________________________________________________________________ 3
Multiplexer Leakage Current
pF15C
IN
DIN, SCLK, CS Input Capacitance
µA±0.01 ±1I
IN
DIN, SCLK, CS Input Leakage
V0.2V
HYST
DIN, SCLK, CS Input Hysteresis
V0.8V
INL
DIN, SCLK, CS Input Low Voltage
µA0.01 10Shutdown VREF Input Current
kΩ18 25VREF Input Resistance
µA82 120VREF Input Current
V
1.0
V
DD
+
50mV
VREF Input Voltage Range
(Note 8)
pF16Input Capacitance
0 to VREF
V
±VREF/2
Input Voltage Range, Single-
Ended and Differential (Note 6)
µA±0.01 ±1
UNITSMIN TYP MAXSYMBOLPARAMETER
(Note 7)
V
IN
= 0V or V
DD
Unipolar, V
COM
= 0V
VREF = 2.048V
Bipolar, V
COM
= VREF/2
On/off leakage current, V
IN
= 0V or V
DD
(Note 7)
CONDITIONS
V
V
DD
/2 V
DD
/2
- 0.3 + 0.3
V
IM
SHDN Input Mid Voltage
µA±4.0I
IN
SHDN Input Current
V0.4V
INL
SHDN Input Low Voltage
VV
DD
- 0.4V
INH
SHDN Input High Voltage
SHDN = 0V or V
DD
nA±80
SHDN Maximum Allowed Leakage,
Mid Input
VV
DD
/2V
FLT
SHDN Voltage, Open
SHDN = open
SHDN = open
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +2.375V to +3.3V, V
COM
= 0V, f
CLK
= 1.5MHz, external clock (50% duty cycle), 15 clocks/conversion cycle (100ksps),
VREF = 2.048V applied to VREF pin, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
mV±0.3PSRSupply Rejection (Note 9)
mA0.8 1.3
I
DD
Positive Supply Current
µA±0.01 ±10I
L
Three-State Leakage Current
VVDD - 0.375V
OH
Output Voltage High
V
0.5
V
OL
Output Voltage Low
0.4
V2.375 3.3V
DD
Positive Supply Voltage
pF15C
OUT
Three-State Output Capacitance
V
DD
= 2.375V to 3.3V, full-scale input,
external reference = 2.048V
Operating mode, full-scale input
CS = V
DD
(Note 7)
CS = V
DD
I
SOURCE
=0.5mA
I
SINK
= 16mA
I
SINK
= 5mA
1.2 10Power-down
V2.0V
INH
DIN, SCLK, CS Input High Voltage
ANALOG/COM INPUTS
EXTERNAL REFERENCE
DIGITAL INPUTS (DIN, SCLK, CS, SHDN)
DIGITAL OUTPUTS (DOUT, SSTRB)
POWER REQUIREMENTS
µA