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MAX1277_09 Datasheet, PDF (3/18 Pages) Maxim Integrated Products – 1.5Msps, Single-Supply, Low-Power, True-Differential, 12-Bit ADCs with Internal Reference
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1.5Msps, Single-Supply, Low-Power, True-
Differential, 12-Bit ADCs with Internal Reference
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.7V to +3.6V, VL = VDD, fSCLK = 24MHz, 50% duty cycle, TA = -40°C to +85°C, unless otherwise noted. Typical values are
at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
ANALOG INPUTS (AIN+, AIN-)
Differential Input Voltage Range
Absolute Input Voltage Range
DC Leakage Current
AIN+ - AIN-, MAX1277
VIN
AIN+ - AIN-, MAX1279
0
-VREF / 2
0
VREF
V
+VREF / 2
VDD
V
±1
µA
Input Capacitance
Per input pin
16
pF
Input Current (Average)
Time averaged at maximum throughput rate
75
µA
REFERENCE OUTPUT (REF)
REF Output Voltage Range
Voltage Temperature Coefficient
Static, TA = +25°C
2.038 2.048 2.058
V
±50
ppm/°C
Load Regulation
Line Regulation
DIGITAL INPUTS (SCLK, CNVST)
ISOURCE = 0 to 2mA
ISINK = 0 to 100µA
VDD = 2.7V to 3.6V, static
0.35
mV/mA
1.0
0.25
mV/V
Input Voltage Low
VIL
Input Voltage High
VIH
Input Leakage Current
IIL
DIGITAL OUTPUT (DOUT)
0.3 x VL V
0.7 x VL
V
0.05 ±10
µA
Output Load Capacitance
Output Voltage Low
Output Voltage High
Output Leakage Current
POWER REQUIREMENTS
COUT
VOL
VOH
IOL
For stated timing performance
ISINK = 5mA, VL ≥ 1.8V
ISOURCE = 1mA, VL ≤ 1.8V
Output high impedance
30
pF
0.4
V
VL - 0.5V
V
±0.2 ±10
µA
Analog Supply Voltage
Digital Supply Voltage
Analog Supply Current,
Normal Mode
VDD
VL
Static, fSCLK = 24MHz
IDD
Static, no SCLK
Operational, 1.5Msps
2.7
3.6
V
1.8
VDD
V
6
8
5
7
mA
7
9
Analog Supply Current,
Partial Power-Down Mode
IDD
fSCLK = 24MHz
No SCLK
2
mA
2
Analog Supply Current,
Full Power-Down Mode
IDD
fSCLK = 24MHz
No SCLK
1
µA
0.3
1
Operational, full-scale input at 1.5Msps
0.3
1
Digital Supply Current (Note 8)
Static, fSCLK = 24MHz
Partial/full power-down mode,
fSCLK = 24MHz
0.15
0.5
mA
0.1
0.3
Static, no SCLK, all modes
0.1
1
µA
Positive-Supply Rejection
PSR VDD = 3V +20% -10%, full-scale input
±0.2 ±3.0
mV
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