SPI
®
/I
2
C
®
Compatible, 10-Bit Digital
Temperature Sensor and 8-Channel ADC

ADT7411
*


Rev. A
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FEATURES
10-bit temperature-to-digital converter
10-bit 8-channel ADC
DC input bandwidth
Input range: 0 V to 2.25 V, and 0 V to VDD
Temperature range: –40°C to +120°C
Temperature sensor accuracy of ±0.5°C
Supply range: 2.7 V to 5.5 V
Power-down current 1 µA
Internal 2.25 VREF option
Double-buffered input logic
I
2
C, SPI, QSPI™, MICROWIRE™, and DSP compatible
4-wire serial interface
SMBus packet error checking (PEC) compatible
16-lead QSOP package
APPLICATIONS
Portable battery-powered instruments
Personal computers
Smart battery chargers
Telecommunications systems electronic test equipment
Domestic appliances
Process control
PIN CONFIGURATION
02882-A
-
005
ADT7411
TOP VIEW
(Not to Scale)
AIN6 1 AIN716
AIN5 2 AIN815
NC 3 AIN414
CS 4 SCL/SCLK13
GND 5 SDA/DIN12
V
DD
6 DOUT/ADD11
D+/AIN1 7 INT/INT10
D–/AIN2 8 AIN39
NC = NO CONNECT

Figure 1.



GENERAL DESCRIPTION
The ADT7411 combines a 10-bit temperature-to-digital con-
verter and a 10-bit 8-channel ADC in a 16-lead QSOP package.
This includes a band gap temperature sensor and a 10-bit ADC
to monitor and digitize the temperature reading to a resolution
of 0.25°C. The ADT7411 operates from a single 2.7 V to 5.5 V
supply. The input voltage on the ADC channels has a range of
0 V to 2.25 V and the input bandwidth is dc. The reference for
the ADC channels is derived internally. The ADT7411 provides
two serial interface options: a 4-wire serial interface compatible
with SPI, QSPI, MICROWIRE, and DSP interface standards,
and a 2-wire SMBus/I
2
C interface. It features a standby mode
that is controlled via the serial interface.
The ADT7411’s wide supply voltage range, low supply current,
and SPI/I
2
C compatible interface make it ideal for a variety of
applications, including personal computers, office equipment,
and domestic appliances.






*Protected by the following U.S. Patent Numbers: 6,169,442; 5,867,012; 5,764174. Other patents pending.