Electrical characteristics—max1082 (continued) – Rainbow Electronics MAX1083 User Manual
Page 3
mA
MAX1082/MAX1083
300ksps/400ksps, Single-Supply, 4-Channel,
Serial 10-Bit ADCs with Internal Reference
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3
ELECTRICAL CHARACTERISTICS—MAX1082 (continued)
(V
DD1
= V
DD2
= +4.5V to +5.5V, COM = GND, f
OSC
= 6.4MHz, 50% duty cycle, 16 clocks/conversion cycle (400ksps), 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.)
CONDITIONS
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
To power down the internal reference
For small adjustments, from 1.22V
0 to 1mA output load
On/off leakage current, V
COM
V
CH_
= 0 or V
DD1
T
A
= +25°C
Bipolar, V
COM
or V
CH_
= V
REF
/2, referenced
to COM or CH_
Unipolar, V
COM
= 0
V/V
+2.05
Buffer Voltage Gain
V
1.4
V
DD1
- 1.0
REFADJ Buffer Disable
Threshold
mV
±100
REFADJ Input Range
V
1.22
REFADJ Output Voltage
µF
0.01
10
Capacitive Bypass at REFADJ
µF
4.7
10
Capacitive Bypass at REF
mV/mA
0.05
2.0
Load Regulation (Note 7)
ppm/°C
±15
TC V
REF
REF Output Temperature
Coefficient
mA
15
REF Short-Circuit Current
V
2.480
2.500
2.520
V
REF
REF Output Voltage
pF
18
Input Capacitance
µA
±0.001
±1
Multiplexer Leakage Current
±V
REF
/2
V
V
REF
V
CH_
Input Voltage Range, Single
Ended and Differential (Note 6)
V
IN
= 0 or V
DD2
In full power-down mode, f
SCLK
= 0
V
REF
= 2.500V, f
SCLK
= 0
V
REF
= 2.500V, f
SCLK
= f
MAX
(Note 8)
pF
C
IN
Input Capacitance
µA
±1
I
IN
Input Leakage
V
0.2
V
HYST
Input Hysteresis
V
0.8
V
INL
Input Low Voltage
V
3.0
V
INH
Input High Voltage
5
320
µA
200
350
REF Input Current
V
1.0
V
DD1
+
50mV
REF Input Voltage Range
I
SINK
= 5mA
V
0.4
V
OL
Output Voltage Low
15
I
SOURCE
= 1mA
V
4
V
OH
Output Voltage High
CS = V
DD2
µA
±10
I
L
Three-State Leakage Current
CS = V
DD2
pF
15
C
OUT
Three-State Output Capacitance
ANALOG INPUTS (CH3–CH0, COM)
EXTERNAL REFERENCE (reference buffer disabled, reference applied to REF)
INTERNAL REFERENCE
DIGITAL INPUTS (DIN, SCLK, CS, SHDN)
DIGITAL OUTPUTS (DOUT, SSTRB)