Electrical characteristics (continued) – Rainbow Electronics MAX1139 User Manual
Page 3
MAX1136–MAX1139
2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
4-/12-Channel, 2-Wire Serial 10-Bit ADCs
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 2.7V to 3.6V (MAX1137/MAX1139), V
DD
= 4.5V to 5.5V (MAX1136/MAX1138), V
REF
= 2.048V (MAX1137/MAX1139), V
REF
=
4.096V (MAX1136/MAX1138), C
REF
= 0.1µF, f
SCL
= 1.7MHz, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at
T
A
= +25°C. See Tables 1–5 for programming notation.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Internal Clock Frequency
2.8
MHz
External clock, fast mode
60
Aperture Delay (Note 5)
t
AD
External clock, high-speed mode
30
ns
ANALOG INPUT (AIN0–AIN11)
Unipolar
0
V
REF
Input-Voltage Range, Single-
Ended and Differential (Note 6)
Bipolar
0
±V
REF
/2
V
Input Multiplexer Leakage Current
ON/OFF leakage current, VAIN_ = 0 or VDD
±0.01
±1
µA
Input Capacitance
CIN
22
pF
INTERNAL REFERENCE (Note 7)
MAX1137/MAX1139
1.968
2.048
2.128
Reference Voltage
VREF
T
A
= +25°C
MAX1136/MAX1138
3.939
4.096
4.256
V
Reference-Voltage Temperature
Coefficient
TCVREF
25
ppm/°C
REF Short-Circuit Current
2
mA
REF Source Impedance
1.5
k
Ω
EXTERNAL REFERENCE
REF Input-Voltage Range
VREF
(Note 8)
1
VDD
V
REF Input Current
IREF
f
SAMPLE
= 94.4ksps
40
µA
DIGITAL INPUTS/OUTPUTS (SCL, SDA)
Input High Voltage
V
IH
0.7
✕
V
DD
V
Input Low Voltage
V
IL
0.3
✕
V
DD
V
Input Hysteresis
V
HYST
0.1
✕
V
DD
V
Input Current
I
IN
V
IN
0 to V
DD
±10
µA
Input Capacitance
C
IN
15
pF
Output Low Voltage
V
OL
I
SINK
= 3mA
0.4
V
POWER REQUIREMENTS
MAX1137/MAX1139
2.7
3.6
Supply Voltage
V
DD
MAX1136/MAX1138
4.5
5.5
V
Internal reference
900
1150
f
SAMPLE
= 94.4ksps
external clock
External reference
670
900
Internal reference
530
f
SAMPLE
= 40ksps
internal clock
External reference
230
Internal reference
380
f
SAMPLE
= 10ksps
internal clock
External reference
60
Internal reference
330
f
SAMPLE
=1ksps
internal clock
External reference
6
µA
Supply Current
I
DD
Shutdown (internal reference OFF)
0.5
110