Datasheet
4-/6-/8-Channel, 16-/14-Bit,
Simultaneous-Sampling ADCs
4
Maxim Integrated
MAX11044/MAX11044B/MAX11045/MAX11045B/
MAX11046/MAX11046B/MAX11054/MAX11055/MAX11056
ELECTRICAL CHARACTERISTICS (continued)
(V
AVDD
= +4.75V to +5.25V, V
DVDD
= +2.70V to +5.25V, V
AGNDS
= V
AGND
= V
DGND
= 0V, V
REFIO
= internal reference, C
RDC
= 4 x
33µF, C
REFIO
= 0.1µF, C
AVDD
= 4 x 0.1µF || 10µF, C
DVDD
= 3 x 0.1µF || 10µF; all digital inputs at DVDD or DGND, unless otherwise
noted, f
SAMPLE
= 250ksps. T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DIGITAL INPUTS (CR0–CR3, RD, WR, CS, CONVST)
Input Voltage High V
IH
V
DVDD
= 2.7V to 5.25V 2 V
Input Voltage Low V
IL
V
DVDD
= 2.7V to 5.25V 0.8 V
Input Capacitance C
IN
10 pF
Input Current I
IN
V
IN
= 0V or V
DVDD
±10 µA
DIGITAL OUTPUTS (DB0–DB15, EOC)
Output Voltage High V
OH
I
SOURCE
= 1.2mA
V
DVDD
-
0.4
V
Output Voltage Low V
OL
I
SINK
= 1mA 0.25 0.4 V
Three-State Leakage Current DB0–DB15, V
RD
≥ V
IH
or V
CS
≥ V
IH
10 µA
Three-State Output Capacitance DB0–DB15, V
RD
≥ V
IH
or V
CS
≥ V
IH
15 pF
Analog Supply Voltage AVDD 4.75 5.25 V
Digital Supply Voltage DVDD 2.70 5.25 V
MAX11046/MAX11046B/MAX11056,
V
AVDD
= 5V
48
MAX11045/MAX11045B/MAX11055,
V
AVDD
= 5V
39
Analog Supply Current I
AVDD
MAX11044/MAX11044B/MAX11054,
V
AVDD
= 5V
30
mA
MAX11046/MAX11046B/MAX11056,
V
DVDD
= 3.3V
7.0
MAX11045/MAX11045B/MAX11055,
V
DVDD
= 3.3V
6.5
Digital Supply Current (Note 9) I
DVDD
MAX11044/MAX11044B/MAX11054,
V
DVDD
= 3.3V
5.5
mA
I
DVDD
10
Shutdown Current
I
AVDD
10
µA
MAX11044/MAX11044B/
MAX11045/MAX11045B/
MAX11046/MAX11046B
±1
Power-Supply Rejection PSR
V
AVDD
=
4.9V to
5.1V
(Note 5)
MAX11054/MAX11055/
MAX11056
±0.25
LSB
TIMING CHARACTERISTICS (Note 4)
CONVST Rise to EOC t
CON
Conversion time (Note 6) 3 µs
Acquisition Time t
ACQ
1 1000 µs
CS Rise to CONVST Rise t
Q
Sample quiet time (Note 6) 500 ns
CONVST Rise to EOC Rise t
0
47 140 ns
EOC Fall to CONVST Fall t
1
CONVST mode B0 = 0 only (Note 7) 0 ns
CONVST Low Time t
2
CONVST mode B0 = 1 only 20 ns