MAX1149 Maxim Integrated Products, MAX1149 Datasheet - Page 4

• Manufacturer Part Number: MAX1149
• Description: (MAX1146 - MAX1149) 14-Bit ADCs
• Manufacturer: Maxim Integrated Products

Multichannel, True-Differential,
Serial, 14-Bit ADCs
ELECTRICAL CHARACTERISTICS (continued)
(V
duty cycle), 18 clocks/conversion (116ksps), V
MAX1148), external 2.500V reference at REF (MAX1147/MAX1149), T
T
4
EXTERNAL REFERENCE AT REF
REF Input Voltage Range
REF Input Current
REF Input Resistance
DIGITAL INPUTS (DIN, SCLK, CS, SHDN)
Input High Voltage
Input Low Voltage
Input Hysteresis
Input Leakage
Input Capacitance
DIGITAL OUTPUT (DOUT, SSTRB)
Output-Voltage Low
Output-Voltage High
Tri-State Leakage Current
Tri-State Output Capacitance
POWER REQUIREMENTS
Positive Supply Voltage
Supply Current (Note 8)
Shutdown Supply Current
(Note 8)
Power-Supply Rejection (Note 9)
A
DD
= +25°C.)
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= 5V (MAX1146/MAX1148), V
PARAMETER
DD
SYMBOL
= 3.3V (MAX1147/MAX1149), SHDN = V
V
C
V
I
V
V
PSR
V
HYST
C
I
V
REF
V
I
OUT
REF
DD
OH
I
IN
OL
DD
IH
IN
L
IL
Shutdown
V
V
I
I
CS = V
CS = V
MAX1147/MAX1149
MAX1146/MAX1148
Normal
operation, full-
scale input
Fast power-down
Full power-down
SHDN = DGND
External reference
SINK
SOURCE
REFADJ
DD
DD
< 3.6V
> 3.6V
= 2mA
DD
DD
= 2mA
= V
DD
CONDITIONS
, C
External
reference
Internal reference at
116ksps
REF
A
= T
= 2.2µF, external +4.096V reference at REF (MAX1146/
MIN
to T
DD
, V
MAX
116ksps
10ksps
1ksps
COM
, unless otherwise noted. Typical values are at
= 0, f
V
SCLK
DD
4.75
MIN
1.5
2.0
3.0
2.7
6
- 0.5
= 2.1MHz, external clock (50%
0.012
±0.2
TYP
0.01
0.12
125
120
0.2
1.1
1.9
0.3
0.3
10
10
8
V
50mV
MAX
5.25
±10
DD
450
0.8
0.4
3.6
1.5
2.4
±1
10
10
+
UNITS
mA
mA
mV
µA
kΩ
µA
pF
µA
pF
µA
V
V
V
V
V
V
V