Datasheet
6 ______________________________________________________________________________________
MAX11205
16-Bit, Single-Channel, Ultra-Low Power,
Delta-Sigma ADC with 2-Wire Serial Interface
Typical Operating Characteristics (continued)
(V
AVDD
= 3.6V, V
DVDD
= 1.8V, V
REFP
- V
REFN
= V
AVDD
; internal clock; T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values
are at T
A
=
+25NC.)
INTERNAL OSCILLATOR FREQUENCY
vs. AVDD VOLTAGE
MAX11205 toc10
AVDD VOLTAGE (V)
FREQUENCY (MHz)
3.453.303.153.002.85
2.2
2.3
2.4
2.5
2.6
2.1
2.70 3.60
V
DVDD
= 1.8V
MAX11205A
MAX11205B
OFFSET ERROR vs. V
REF
(MAX11205A/MAX11205B)
MAX11205 toc11
V
REF
VOLTAGE (V)
OFFSET ERROR (ppmFSR)
3.53.02.52.01.5
-0.5
0
0.5
1.0
1.5
2.0
-1.0
1.0 4.0
V
REF
= V
REFP
- V
REFN
T
A
= +85°C
T
A
= -45°C
T
A
= +25°C
OFFSET ERROR vs. TEMPERATURE
(MAX11205A/MAX11205B)
MAX11205 toc12
TEMPERATURE (°C)
OFFSET ERROR (ppmFSR)
75553515-5-25
0.5
1.0
1.5
2.0
2.5
0
-45 95
CALIBRATED AT +25°C
INTEGRAL NONLINEARITY vs. INPUT
VOLTAGE (MAX11205A/MAX11205B)
MAX11205 toc13
INPUT VOLTAGE (V)
INL (ppmFSR)
2.01.50.5 1.0-1.5 -1.0 -0.5 0-2.0
-8
-6
-4
-2
0
2
4
6
8
10
-10
-2.5 2.5
V
AVDD
= 3.0V
V
DVDD
= 1.8V
V
REF
= 2.5V
V
IN(CM)
= 1.5V
T
A
= +25°C
T
A
= -45°C
T
A
= +85°C
MAX11205 toc14
TEMPERATURE (°C)
NORMALIZED FULL-SCALE ERROR (ppmFSR)
FULL-SCALE ERROR vs. TEMPERATURE
(MAX11205A/MAX11205B)
755515 35-5-25
-8
-6
-4
-2
0
2
4
6
8
10
-10
-45
V
REF
= 2.5V
+FS ERROR
-FS ERROR
PSRR vs. FREQUENCY
(MAX11205A)
MAX11205 toc15
FREQUENCY (Hz)
PSRR (dB)
10k1k10010
-120
-100
-80
-60
-40
-20
0
-140
1 100k
V
DVDD
V
AVDD
PSRR vs. FREQUENCY
(MAX11205B)
MAX11205 toc16
FREQUENCY (Hz)
PSRR (dB)
10k1k10010
-120
-100
-80
-60
-40
-20
0
-140
1 100k
V
DVDD
V
AVDD
CMRR vs. FREQUENCY
(MAX11205A/MAX11205B)
MAX11205 toc17
FREQUENCY (Hz)
CMRR (dB)
10k1k10010
-120
-100
-80
-60
-40
-20
0
-140
1 100k
MAX11205A
MAX11205B
NORMAL-MODE FREQUENCY RESPONSE
(MAX11205A)
MAX11205 toc18
FREQUENCY (Hz)
GAIN (dB)
10010
-120
-100
-80
-60
-40
-20
0
-140
1 1k