Datasheet
ADT7411
Rev. B | Page 8 of 36
PIN CONFIGURATION AND FUNCTIONAL DESCRIPTIONS
1
2
3
4
5
6
7
8
NC = NO CONNECT
16
15
14
13
12
11
10
9
AIN5
NC
CS
D+/AIN1
V
DD
GND
AIN6
AIN8
AIN4
SCL/SCLK
INT/INT
D–/AIN2 AIN3
DOUT/ADD
SDA/DIN
AIN7
TOP VIEW
(Not to Scale)
ADT7411
02882-005
Figure 6. Pin Configuration
Table 4. Pin Function Descriptions
Pin
No.
Mnemonic Description
1 AIN6 Analog Input. Single-ended analog input channel. Input range is 0 V to 2.25 V or 0 V to V
DD
.
2 AIN5 Analog Input. Single-ended analog input channel. Input range is 0 V to 2.25 V or 0 V to V
DD
.
3 NC No Connection.
4
CS
SPI—Active Low Control Input. This is the frame synchronization signal for the input data. When CS goes low, it
enables the input register and data is transferred in on the rising edges and out on the falling edges of the subsequent
serial clocks. It is recommended that this pin be tied high to V
DD
when operating the serial interface in I
2
C mode.
5 GND Ground Reference Point for All Circuitry on the Part. Analog and digital ground.
6 V
DD
Positive Supply Voltage, 2.7 V to 5.5 V. The supply should be decoupled to ground.
7 D+/AIN1
Positive Connection to External Temperature Sensor/A
nalog Input. Single-ended analog input channel.
Input range is 0 V to 2.25 V or 0 V to 5 V.
8 D−/AIN2
Negative Connection to External Temperature Sensor/Anal
og Input. Single-ended analog input channel.
Input range is 0 V to 2.25 V or 0 V to 5 V.
9 AIN3 Analog Input. Single-ended analog input channel. Input range is 0 V to 2.25 V or 0 V to V
DD
.
10
INT/INT
Overlimit Interrupt. The output polarity of this pin can be set to give an active low or active high interrupt when
temperature, V
DD
, or AIN limits are exceeded. Default is active low. Open-drain output needs a pull-up resistor.
11 DOUT/ADD
DOUT—SPI Serial Data Output. Log
ic output. Data is clocked out of any register at this pin. Data is clocked out on the
falling edge of SCLK. Open-drain output needs a pull-up resistor.
ADD—I
2
C Serial Bus Address Selection Pin. Logic input. A low on this pin gives the Address 1001 000, while leaving it
floating gives the Address 1001 010 and setting it high gives the Address 1001 011. The I
2
C address set up by the
ADD pin is not latched by the device until after this address has been sent twice. On the eighth SCL cycle of the
second valid communication, the serial bus address is latched in. Any subsequent changes on this pin have no
effect on the I
2
C serial bus address.
12 SDA/DIN
SDA—I
2
C Serial Data Input. I
2
C serial data to be loaded into the part’s registers is provided on this input. An open-
drain configuration needs a pull-up resistor.
DIN—SPI Serial Data Input. Serial data to be loaded into the part’s registers is provided on this input. Data is
clocked into a register on the rising edge of SCLK. An open-drain configuration needs a pull-up resistor.
13 SCL/SCLK
Serial Clock Input. This is the clock input f
or the serial port. The serial clock is used to clock data out of any register
of the ADT7411 and to clock data into any register that can be written to. An open-drain configuration needs a pull-
up resistor.
14 AIN4 Analog Input. Single-ended analog input channel. Input range is 0 V to 2.25 V or 0 V to V
DD
.
15 AIN8 Analog Input. Single-ended analog input channel. Input range is 0 V to 2.25 V or 0 V to V
DD
.
16 AIN7 Analog Input. Single-ended analog input channel. Input range is 0 V to 2.25 V or 0 V to V
DD
.