MAX146 Maxim, MAX146 Datasheet - Page 3

• Manufacturer Part Number: MAX146
• Description: +2.7Low-Power / 8-Channel / Serial 12-Bit ADCs
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (continued)
(V
clocks/conversion cycle (133ksps); MAX146—4.7µF capacitor at VREF pin; MAX147—external reference, VREF = 2.500 V applied to
VREF pin; T
Input Voltage Range, Single-
Ended and Differential (Note 6)
Multiplexer Leakage Current
Input Capacitance
VREF Output Voltage
VREF Short-Circuit Current
VREF Temperature Coefficient
Load Regulation (Note 7)
Capacitive Bypass at VREF
Capacitive Bypass at REFADJ
REFADJ Adjustment Range
VREF Input Voltage Range
(Note 8)
VREF Input Current
VREF Input Resistance
Shutdown VREF Input Current
REFADJ Buffer Disable Threshold
Capacitive Bypass at VREF
Reference Buffer Gain
REFADJ Input Current
ANALOG/COM INPUTS
INTERNAL REFERENCE (MAX146 only, reference buffer enabled)
EXTERNAL REFERENCE AT VREF (Buffer disabled)
EXTERNAL REFERENCE AT REFADJ
DD
= +2.7V to +3.6V (MAX146); V
PARAMETER
A
= T
MIN
to T
_______________________________________________________________________________________
MAX
; unless otherwise noted.)
DD
SYMBOL
= +2.7V to +5.25V (MAX147); COM = 0V; f
Unipolar, COM = 0V
Bipolar, COM = VREF / 2
On/off leakage current, V
T
MAX146_C
MAX146_E
MAX146_M
0mA to 0.2mA output load
Internal compensation mode
External compensation mode
VREF = 2.500V
Internal compensation mode
External compensation mode
MAX146
MAX147
MAX146
MAX147
A
= +25°C
+2.7V, Low-Power, 8-Channel,
CONDITIONS
CH_
= 0V or V
SCLK
Serial 12-Bit ADCs
DD
= 2.0MHz; external clock (50% duty cycle); 15
2.480
0.047
V
MIN
4.7
1.0
0.5
4.7
DD
18
0
0
-
±0.01
2.500
TYP
0.35
±1.5
0.01
2.06
2.00
±30
±30
±30
100
16
25
±VREF / 2
0 to VREF
V
50mV
2.520
MAX
±50
±60
±80
DD
±50
±10
150
±1
30
10
+
ppm/°C
UNITS
mA
mV
V/V
kΩ
µA
pF
µA
µA
µA
µF
µF
µF
%
V
V
V
V
3