Datasheet

MAX1169
58.6ksps, 16-Bit, 2-Wire Serial ADC
in a 14-Pin TSSOP
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
AV
DD
= +4.75V to +5.25V, V
DV
DD
= +2.7V to +5.5V, 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
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Current ±10 μA
Input Capacitance 15 pf
POWER REQUIREMENTS (AVDD, AGND, DVDD, DGND)
Analog Supply Voltage AVDD 4.75 5.25 V
Digital Supply Voltage DVDD 2.7 5.5 V
f
SAMPLE
= 58.6ksps 1.8 2.5
f
SAMPLE
= 10ksps 0.7
mA
f
SAMPLE
= 1ksps 40
Internal reference
(powered down
between conversions,
R/W = 0)
Shutdown 0.4 5
μA
f
SAMPLE
= 58.6ksps 1.8 2.5
f
SAMPLE
= 10ksps 1.4
mA
f
SAMPLE
= 1ksps 1.1
Internal reference
(always on, R/W = 1)
Shutdown 0.4 5
μA
f
SAMPLE
= 58.6ksps 0.90 1.8
f
SAMPLE
= 10ksps 0.36
mA
f
SAMPLE
= 1ksps 40
Analog Supply Current I
AVDD
External reference
(REFADJ = AVDD)
Shutdown 0.4 5
μA
f
SAMPLE
= 58.6ksps 260 400
f
SAMPLE
= 10ksps 65
f
SAMPLE
= 1ksps 6
Digital Supply Current I
DVDD
Shutdown 0.2 5
μA
Power-Supply Rejection Ratio
PSRR V
AVDD
= 5V ±5%, full-scale input (Note 8) 5 16 LSB/V
TIMING CHARACTERISTICS FOR 2-WIRE FAST MODE (Figure 1a and Figure 2)
Serial Clock Frequency f
SCL
400 kHz
Bus Free Time Between a STOP
and a START Condition
t
BUF
1.3 μs
Hold Time for Start Condition t
HD, STA
0.6 μs
Low Period of the SCL Clock t
LOW
1.3 μs
High Period of the SCL Clock t
HIGH
0.6 μs
Setup Time for a Repeated
START Condition (Sr)
t
SU, STA
0.6 μs
Data Hold Time t
HD, DAT
(Note 9) 0 900 ns
Data Setup Time t
SU, DAT
100 ns
Rise Time of Both SDA and SCL
Signals, Receiving
t
R
(Note 10) 20 + 0.1C
B
300 ns
Fall Time of SDA Transmitting t
F
(Note 10) 20 + 0.1C
B
300 ns
Setup Time for STOP Condition t
SU, STO
0.6 μs
Capacitive Load for Each Bus
C
B
400 pF
Pulse Width of Spike Suppressed t
SP
50 ns