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MAX1224 Datasheet, PDF (3/18 Pages) Maxim Integrated Products – 1.5Msps, Single-Supply, Low-Power, True-Differential, 12-Bit ADCs
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1.5Msps, Single-Supply, Low-Power,
True-Differential, 12-Bit ADCs
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.7V to +3.6V, VL = VDD, VREF = 2.048V, fSCLK = 24.0MHz, 50% duty cycle, TA = TMIN to TMAX, unless otherwise noted.
Typical values are at VDD = 3V and 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-, MAX1224
VIN
AIN+ - AIN-, MAX1225
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
50
µA
REFERENCE INPUT (REF)
REF Input Voltage Range
VREF
1.0
VDD +
50mV
V
Input Capacitance
DC Leakage Current
20
pF
±1
µA
Input Current (Average)
Time averaged at maximum throughput rate
200
µA
DIGITAL INPUTS (SCLK, CNVST)
Input-Voltage Low
Input-Voltage High
Input Leakage Current
DIGITAL OUTPUT (DOUT)
Output Load Capacitance
Output-Voltage Low
Output-Voltage High
Output Leakage Current
POWER REQUIREMENTS
VIL
VIH
IIL
COUT
VOL
VOH
IOL
For stated timing performance
ISINK = 5mA, VL ≥ 1.8V
ISOURCE = 1mA, VL ≥ 1.8V
Output high impedance
0.3 x VL V
0.7 x VL
V
0.05 ±10
µA
30
pF
0.4
V
VL - 0.5V
V
±0.2 ±10
µA
Analog Supply Voltage
Digital Supply Voltage
Analog Supply Current,
Normal Mode
Analog Supply Current,
Partial Power-Down Mode
VDD
VL
Static, fSCLK = 24.0MHz
IDD
Static, no SCLK
Operational, 1.5Msps
IDD
fSCLK = 24.0MHz
No SCLK
2.7
3.6
V
1.8
VDD
V
5
7
4
5
mA
6
8
1
mA
1
Analog Supply Current,
Full Power-Down Mode
IDD
fSCLK = 24.0MHz
No SCLK
1
µA
0.3
1
Operational, full-scale input at 1.5Msps
0.3
1
Digital Supply Current (Note 8)
Static, fSCLK = 24.0MHz
Partial/full power-down mode,
fSCLK = 24.0MHz
0.15
0.5
mA
0.1
0.3
Static, no SCLK, all modes
0.1
1
µA
Positive-Supply Rejection
PSR Full-scale input, 3V +20%, -10%
±0.2 ±3.0
mV
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