MAX1245 Datasheet, PDF (3/20 Pages) Maxim Integrated Products – +2.375V, Low-Power, 8-Channel, Serial 12-Bit ADC

+2.375V, Low-Power, 8-Channel,
Serial 12-Bit ADC
ELECTRICAL CHARACTERISTICS (continued)
(V_DD = +2.375V to +3.3V, 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.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
ANALOG/COM INPUTS
Input Voltage Range, Single-
Ended and Differential (Note 6)
Multiplexer Leakage Current
Input Capacitance
Unipolar, COM = 0V
Bipolar, COM = VREF/2
On/off leakage current, VIN = 0V or VDD
(Note 7)
0 to VREF
V
±VREF/2
±0.01 ±1
µA
16
pF
EXTERNAL REFERENCE
VREF Input Voltage Range
(Note 8)
1.0
VDD +
50mV
V
VREF Input Current
VREF Input Resistance
Shutdown VREF Input Current
VREF = 2.048V
82
120 µA
18
25
kΩ
0.01
10
µA
DIGITAL INPUTS (DIN, SCLK, CS, SHDN)
DIN, SCLK, CS Input High Voltage VINH
DIN, SCLK, CS Input Low Voltage VINL
DIN, SCLK, CS Input Hysteresis
VHYST
DIN, SCLK, CS Input Leakage
IIN
DIN, SCLK, CS Input Capacitance CIN
SHDN Input High Voltage
VINH
SHDN Input Low Voltage
VINL
SHDN Input Current
IIN
SHDN Input Mid Voltage
VIM
SHDN Voltage, Floating
SHDN Maximum Allowed Leakage,
Mid Input
VFLT
VIN = 0V or VDD
(Note 7)
SHDN = 0V or VDD
SHDN = open
SHDN = open
2.0
V
0.8
V
0.2
V
±0.01 ±1
µA
15
pF
VDD - 0.4
V
0.4
V
±4.0 µA
VDD/2
- 0.3
VDD/2
+ 0.3
V
VDD/2
V
±80 nA
DIGITAL OUTPUTS (DOUT, SSTRB)
Output Voltage Low
VOL
Output Voltage High
Three-State Leakage Current
Three-State Output Capacitance
POWER REQUIREMENTS
Positive Supply Voltage
VOH
IL
COUT
VDD
Positive Supply Current
IDD
ISINK = 5mA
ISINK = 16mA
ISOURCE =0.5mA
CS = VDD
CS = VDD (Note 7)
Operating mode, full-scale input
Power-down
0.4
V
0.5
VDD - 0.375
V
±0.01 ±10 µA
15
pF
2.375
0.8
1.2
3.3
V
1.3 mA
10
µA
Supply Rejection (Note 9)
PSR
VDD = 2.375V to 3.3V, full-scale input,
external reference = 2.048V
±0.3
mV
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