Datasheet

MAX11047–MAX11049/MAX11057–MAX11059
4-/6-/8-Channel, 16-/14-Bit,
Simultaneous-Sampling ADCs
_______________________________________________________________________________________ 5
Typical Operating Characteristics
(V
AVDD
= 5V, V
DVDD
= 3.3V, T
A
= +25°C, f
SAMPLE
= 250ksps, internal reference, unless otherwise noted.)
INTEGRAL NONLINEARITY (INL)
vs. CODE FOR MAX1104_
MAX11047 toc01
OUTPUT CODE (DECIMAL)
INL (LSBs)
57344
4915232768
40960
16384
245768192
-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
= 5.0V
V
DVDD
= 3.3V
f
SAMPLE
= 250ksps
T
A
= +25°C
V
RDC
= 4.096V
DIFFERENTIAL NONLINEARITY (DNL)
vs. CODE FOR MAX1104_
MAX11047 toc02
OUTPUT CODE (DECIMAL)
DNL (LSBs)
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
V
AVDD
= 5.0V
V
DVDD
= 3.3V
f
SAMPLE
= 250ksps
T
A
= +25°C
V
RDC
= 4.096V
57344
4915232768
40960
16384
245768192
0 65536
ELECTRICAL CHARACTERISTICS (continued)
V
AVDD
= 4.75V to 5.25V, V
DVDD
= +2.7V 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.
T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
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.
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.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
CONVST Rise to EOC Rise t
0
65 140 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
CS Fall to WR Fall t
3
0 ns
WR Low Time t
4
20 ns
CS Rise to WR Rise t
5
0 ns
Input Data Setup Time t
6
10 ns
Input Data Hold Time t
7
0 ns
CS Fall to RD Fall t
8
0 ns
RD Low Time t
9
30 ns
RD Rise to CS Rise t
10
0 ns
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