Instruction Manual

MAX1286–MAX1289
150ksps, 12-Bit, 2-Channel Single-Ended, and
1-Channel True-Differential ADCs in SOT23
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +2.7V to +3.6V, V
REF
= +2.5V for MAX1287/MAX1289, or VDD = +4.75V to +5.25V, V
REF
= +4.096V for MAX1286/MAX1288,
0.1µF capacitor at REF, f
SCLK
= 8MHz (50% duty cycle), AIN- = GND for MAX1288/MAX1289. T
A
= T
MIN
to T
MAX,
unless otherwise
noted. Typical values at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Input Leakage Current
C hannel not sel ected or conver si on stop p ed ±0.01
±1µA
Input Capacitance 34 pF
EXTERNAL REFERENCE INPUT
Input Voltage Range V
REF
1.0
V
DD
+50mV
V
V
REF
= +2.5V at 150ksps 16 30
V
REF
= +4.096V at 150ksps 26 45Input Current I
REF
Acquisition/Between conversions
±0.01
±1
µA
DIGITAL INPUTS/OUTPUTS (SCLK, CNVST, DOUT)
Input Low Voltage V
IL
0.8 V
Input High Voltage V
IH
V
DD
-1
V
Input Leakage Current I
L
±0.01 ±1.0
µA
Input Capacitance C
IN
15 pF
I
SINK
= 2mA 0.4 V
Output Low Voltage V
OL
I
SINK
= 4mA 0.8 V
Output High Voltage V
OH
I
SOURCE
= 1.5mA
V
DD
-0.5
V
Three-State Leakage Current CNVST = GND
±0.05 ±10
µA
Three-State Output Capacitance C
OUT
CNVST = GND 15 pF
POWER REQUIREMENTS
MAX1086/MAX1088
4.75
5.0
5.25
Positive Supply Voltage V
DD
MAX1087/MAX1089 2.7 3.0 3.6
V
f
SAMPLE
=150ksps
245
350
f
SAMPLE
=100ksps
150
f
SAMPLE
=10ksps 15
V
DD
= +3V
f
SAMPLE
=1ksps 2
f
SAMPLE
=150ksps
320
400
f
SAMPLE
=100ksps
215
f
SAMPLE
=10ksps 22
V
DD
= +5V
f
SAMPLE
=1ksps 2.5
Positive Supply Current I
DD
Shutdown 0.2 5
µA
V
DD
= 5V ±5%; full-scale input
±0.3 ±1.0
Positive Supply Rejection PSR
V
DD
= +2.7V to +3.6V; full-scale input
±0.4 ±1.2
mV