SPI®-/I2C®-Compatible, 10-Bit Digital
Temperature Sensor and 8-Channel ADC
ADT7411
PIN CONFIGURATION
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 : <10 μA
Internal 2.25 VREF option
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
AIN6
AIN5
NC
AIN7
AIN8
ADT7411
AIN4
TOP VIEW
CS
SCL/SCLK
SDA/DIN
DOUT/ADD
INT/INT
AIN3
(Not to Scale)
GND
V
DD
D+/AIN1
D–/AIN2
NC = NO CONNECT
Double-buffered input logic
I2C, SPI, QSPI™, MICROWIRE™, and DSP compatible
Figure 1.
4-wire serial interface
SMBus packet error checking (PEC) compatible
16-lead QSOP
APPLICATIONS
Portable battery-powered instruments
PCs
Smart battery chargers
Telecommunications systems electronic test equipment
Domestic appliances
Process controls
GENERAL DESCRIPTION
The ADT74111 combines a 10-bit temperature-to-digital
converter and a 10-bit 8-channel ADC in a 16-lead QSOP. 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/I2C 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-/I2C-compatible interface make it ideal for a variety of
applications, including PCs, office equipment, and domestic
appliances.
1 Protected by U.S. Patent Numbers: 6,169,442; 5,867,012; 5,764174.
Rev. B
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