Datasheet

MAX1191
Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
12 ______________________________________________________________________________________
INPUT BANDWIDTH
vs. ANALOG INPUT FREQUENCY
MAX1191 toc31
ANALOG INPUT FREQUENCY (MHz)
GAIN (dB)
10010
-8
-6
-4
-2
0
2
4
6
-10
1 1000
SMALL-SIGNAL
BANDWIDTH
-20dB FS
FULL-POWER
BANDWIDTH
-0.5dB FS
V
DD
(V)
3.5
3.43.33.23.0 3.12.9
2.8
2.7 3.6
REFERENCE VOLTAGE
vs. ANALOG SUPPLY VOLTAGE
MAX1191 toc32
V
REFP
- V
REFN
(V)
0.5105
0.5110
0.5115
0.5120
0.5125
0.5130
0.5100
V
DD
= V
REFIN
TEMPERATURE (°C)
603510-15-40 85
REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1191 toc33
V
REFP
- V
REFN
(V)
0.5105
0.5110
0.5115
0.5120
0.5125
0.5130
0.5100
V
DD
= V
REFIN
INTEGRAL NONLINEARITY
MAX1191 toc27
DIGITAL OUTPUT CODE
INL (LSB)
224192128 16064 9632
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
-0.5
0256
DIFFERENTIAL NONLINEARITY
MAX1191 toc28
DIGITAL OUTPUT CODE
DNL (LSB)
224192128 16064 9632
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
-0.5
0 256
OFFSET ERROR
vs. TEMPERATURE
MAX1191 toc29
TEMPERATURE (°C)
OFFSET ERROR (% FS)
603510-15
0.30
0.25
0.20
0.15
0.10
0.05
0
-0.05
-0.10
-40 85
V
REFIN
= 1.024V
CHANNEL B
CHANNEL A
-0.05
0
0.05
0.10
0.20
0.15
0.25
0.30
-0.10
GAIN ERROR
vs. TEMPERATURE
MAX1191 toc30
TEMPERATURE (°C)
GAIN ERROR (% FS)
603510-15-40 85
V
REFIN
= 1.024V
CHANNEL B
CHANNEL A
Typical Operating Characteristics (continued)
(V
DD
= 3.0V, OV
DD
= 1.8V, V
REFIN
= V
DD
(internal reference), C
L
≈ 10pF at digital outputs, differential input at -0.5dB FS, f
CLK
=
7.500567MHz at 50% duty cycle, T
A
= +25°C, unless otherwise noted.)