Pin description – Rainbow Electronics MAX1139 User Manual
Page 8
MAX1136–MAX1139
2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
4-/12-Channel, 2-Wire Serial 10-Bit ADCs
8
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Pin Description
PIN
MAX1136
MAX1137
MAX1138
MAX1139
NAME
DESCRIPTION
1, 2, 3
1, 2, 3
AIN0–AIN2
—
4–8
AIN3–AIN7
—
16, 15, 14
AIN8–AIN10
Analog Inputs
4
—
AIN3/REF
Analog Input 3/Reference Input or Output. Selected in the Setup Register.
(See Tables 1 and 6.)
—
13
AIN11/REF
Analog Input 11/Reference Input or Output. Selected in the Setup Register.
(See Tables 1 and 6.)
5
9
SCL
Clock Input
6
10
SDA
Data Input/Output
7
11
GND
Ground
8
12
V
DD
Positive Supply. Bypass to GND with a 0.1µF capacitor.
t
HD.STA
t
SU.DAT
t
HIGH
t
R
t
F
t
HD.DAT
t
HD.STA
S
Sr
A
SCL
SDA
t
SU.STA
t
LOW
t
BUF
t
SU.STO
P
S
t
HD.STA
t
SU.DAT
t
HIGH
t
FCL
t
HD.DAT
t
HD.STA
S
Sr
A
SCL
SDA
t
SU.STA
t
LOW
t
BUF
t
SU.STO
S
t
RCL
t
RCL1
HS-MODE
F/S-MODE
A. F/S-MODE 2-WIRE SERIAL INTERFACE TIMING
B. HS-MODE 2-WIRE SERIAL INTERFACE TIMING
t
FDA
t
RDA
t
t
R
t
F
P
Figure 1. 2-Wire Serial Interface Timing