Datasheet

4-/6-/8-Channel, 16-/14-Bit,
Simultaneous-Sampling ADCs
5
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
CS Fall to WR Fall t
3
0ns
WR Low Time t
4
20 ns
CS Rise to WR Rise t
5
0ns
Input Data Setup Time t
6
10 ns
Input Data Hold Time t
7
1ns
CS Fall to RD Fall t
8
0ns
RD Low Time t
9
30 ns
RD Rise to CS Rise t
10
0ns
RD High Time t
11
10 ns
RD Fall to Data Valid t
12
35 ns
RD Rise to Data Hold Time t
13
(Note 7) 5 ns
Note 1: See the Definitions section at the end of the data sheet.
Note 2: Tested with alternating channels modulated at full scale and ground.
Note 3: See the
Input Range and Protection section for more details.
Note 4: C
LOAD
= 30pF on DB0–DB15 and EOC. Inputs (CH0–CH7) alternate between full scale and zero scale. f
CONV
= 250ksps.
All data is read out.
Note 5: Defined as the change in positive full scale caused by a ±2% variation in the nominal supply voltage.
Note 6: It is recommended that RD, WR, and CS are kept high for the quiet time (t
Q
) and conversion time (t
CON
).
Note 7: Guaranteed by design.
INTEGRAL NONLINEARITY vs. CODE
(A-GRADE)
MAX11044 toc01
OUTPUT CODE (DECIMAL)
INL (LSB)
57344 49152 32768 40960 16384 24576 8192
-1.6
-0.8
-1.2
0
-0.4
0.4
0.8
1.2
1.6
2.0
-2.0
0 65536
V
AVDD
= 5.25V
V
DVDD
= 3.3V
f
SAMPLE
= 250ksps
T
A
= +25°C
V
RDC
= 4.096V
64 HITS PER CODE
INTEGRAL NONLINEARITY vs. CODE
(B-GRADE)
MAX11044 toc01a
OUTPUT CODE (DECIMAL)
INL (LSB)
57344 49152 32768 40960 16384 24576 8192
-2.5
-1.5
-2.0
-1.0
0
-0.5
0.5
1.0
1.5
2.0
2.5
3.0
-3.0
0 65536
V
AVDD
= 5.25V
V
DVDD
= 3.3V
f
SAMPLE
= 250ksps
T
A
= +25°C
V
RDC
= 4.096V
64 HITS PER CODE
DIFFERENTIAL NONLINEARITY
vs. CODE (A-GRADE)
MAX11044 toc02
OUTPUT CODE (DECIMAL)
DNL (LSB)
57344 49152 32768 40960 16384 24576 8192
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0 65536
V
AVDD
= 5.25V
V
DVDD
= 3.3V
f
SAMPLE
= 250ksps
T
A
= +25°C
V
RDC
= 4.096V
64 HITS PER CODE
Typical Operating Characteristics
(V
AVDD
= 5V, V
DVDD
= 3.3V, T
A
= +25°C, f
SAMPLE
= 250ksps, internal reference, unless otherwise noted.)