MAX1082 Datasheet, PDF (5/24 Pages) Maxim Integrated Products – 300ksps/400ksps, Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference

300ksps/400ksps, Single-Supply, 4-Channel,
Serial 10-Bit ADCs with Internal Reference
ELECTRICAL CHARACTERISTICS—MAX1083 (continued)
(V_DD1 = V_DD2 = +2.7V to +3.6V, COM = GND, f_OSC = 4.8MHz, 50% duty cycle, 16 clocks/conversion cycle (300ksps), external
+2.5V at REF, REFADJ = V_DD1, T_A = T_MIN to T_MAX, unless otherwise noted. Typical values are at T_A = +25°C.)
PARAMETER
CONVERSION RATE
Conversion Time (Note 5)
Track/Hold Acquisition Time
Aperture Delay
Aperture Jitter
SYMBOL
CONDITIONS
t_CONV
t_ACQ
Normal operating mode
Normal operating mode
Serial Clock Frequency
f_SCLK
Duty Cycle
ANALOG INPUTS (CH3–CH0, COM)
Input Voltage Range, Single
Ended and Differential (Note 6)
V_{CH_}
Normal operating mode
Unipolar, V_COM = 0
Bipolar, V_COM or V_{CH_} = V_REF/2,
referenced to COM or CH_
Multiplexer Leakage Current
Input Capacitance
INTERNAL REFERENCE
REF Output Voltage
REF Short-Circuit Current
On/off leakage current, V_{CH_} = 0 or V_DD1
V_REF T_A = +25°C
REF Output Temperature
Coefficient
TC V_REF
Load Regulation (Note 7)
Capacitive Bypass at REF
Capacitive Bypass at REFADJ
REFADJ Output Voltage
REFADJ Input Range
0 to 0.75mA output load
For small adjustments, from 1.22V
REFADJ Buffer Disable
Threshold
To power down the internal reference
Buffer Voltage Gain
EBXufTfeErRVNoAltaLgReEGFaEinRENCE (reference buffer disabled, reference applied to REF)
REF Input Voltage Range
(Note 8)
REF Input Current
DIGITAL INPUTS (DIN, SCLK, CS, SHDN)
Input High Voltage
V_INH
Input Low Voltage
V_INL
Input Hysteresis
V_HYST
Input Leakage
I_IN
Input Capacitance
C_IN
V_REF = 2.500V, f_SCLK = f_MAX
V_REF = 2.500V, f_SCLK = 0
In full power-down mode, f_SCLK = 0
V_IN = 0 or V_DD2
MIN TYP MAX UNITS
3.3
µs
625
ns
10
ns
<50
ps
0.5
4.8 MHz
40
60
%
V_REF
V
±V_REF/2
±0.001 ±1
µA
18
pF
2.480 2.500 2.520
V
15
mA
±15
ppm/°C
0.1 2.0
4.7
10
0.01
10
1.22
±100
mV/mA
µF
µF
V
mV
1.4
V_DD1 - 1
V
+2.05
V/V
2.05
V/V
1.0
V_DD1 +
50mV
V
200 350
320
µA
5
2.0
V
0.8
V
0.2
V
±1
µA
15
pF
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