Datasheet

MAX1169
58.6ksps, 16-Bit, 2-Wire Serial ADC
in a 14-Pin TSSOP
_______________________________________________________________________________________ 9
INTERNAL +4.096V REFERENCE VOLTAGE
vs. ANALOG SUPPLY VOLTAGE
MAX1169 toc12
V
AVDD
(V)
V
REF
(V)
5.155.054.954.85
4.080
4.085
4.090
4.095
4.100
4.075
4.75 5.25
V
DVDD
= 3V
T
A
= +85
°
C
T
A
= +70
°
C
T
A
= +25
°
C
T
A
= 0
°
C
T
A
= -40
°
C
INTERNAL REFERENCE VOLTAGE
vs. REF LOAD
MAX1169 toc13
I
REF
(mA)
V
REF
(V)
54321
3.95
4.00
4.05
4.10
4.20
3.90
06
f
SCL
= 0
INTERNAL REFERENCE MODE
LOAD APPLIED TO REF
4.15
5
10
15
20
25
30
35
0
EXTERNAL REFERENCE CURRENT
vs. EXTERNAL REFERENCE VOLTAGE
MAX1169 toc14
V
REF
(V)
I
REF
(μA)
5432106
AIN = AGNDS
58.6ksps
f
SCL
= 1.7MHz
19ksps
f
SCL
= 400kHz
EXTERNAL REFERENCE CURRENT AND
REFERENCE VOLTAGE vs. V
REFADJ
MAX1169 toc15
V
REFADJ
(V)
I
REFADJ
(μA)
V
REF
(V)
4.204.154.104.054.00
-20
-10
0
10
20
30
-30
4.00
4.05
4.10
4.15
4.20
4.25
3.95
3.95 4.25
AIN = AGNDS
I
REFADJ
V
REF
Typical Operating Characteristics (continued)
(V
DVDD
= +3.0V, V
AVDD
= +5.0V, f
SCL
= 1.7MHz (33% duty cycle), f
SAMPLE
= 58.6ksps, V
REF
= +4.096V, external reference applied
to REF, REFADJ = AVDD, C
REF
= 10μF, T
A
= +25°C, unless otherwise noted.)