SPI/I2C Compatible, Temperature Sensor,
4-Channel ADC and Quad Voltage Output DAC
ADT7516/ADT7517/ADT7519
FEATURES
APPLICATIONS
ADT7516—four 12-bit DACs
ADT7517—four 10-bit DACs
ADT7519—four 8-bit DACs
Buffered voltage output
Portable battery-powered instruments
Personal computers
Smart battery chargers
Telecommunications systems
Guaranteed monotonic by design over all codes
10-bit temperature-to-digital converter
10-bit 4-channel ADC
Electronic text equipment
Domestic appliances
Process control
DC input bandwidth
Input range: 0 V to 2.28 V
PIN CONFIGURATION
Temperature range: –40°C to +120°C
Temperature sensor accuracy of typ: 0.5°C
Supply range: 2.7 V to 5.5 V
DAC output range: 0 V to 2 VREF
Power-down current: 1 µA
Internal 2.28 VREF option
Double-buffered input logic
Buffered reference input
V
V
-B
-A
1
2
3
4
5
6
7
8
16
15
V
V
-C
-D
OUT
OUT
OUT
OUT
ADT7516/
ADT7517/
ADT7519
V
-IN
CS
14 AIN4
REF
13 SCL/SCLK
12 SDA/DIN
11 DOUT/ADD
10 INT/INT
TOP VIEW
(Not to Scale)
GND
V
DD
D+/AIN1
D–/AIN2
9
LDAC/AIN3
Power-on reset to 0 V DAC output
Simultaneous update of outputs (LDAC function)
On-chip rail-to-rail output buffer amplifier
SPI®, I2C®, QSPI™, MICROWIRE™, and DSP compatible
4-wire serial interface
Figure 1.
SMBus packet error checking (PEC) compatible
16-lead QSOP package
GENERAL DESCRIPTION
The ADT7516/ADT7517/ADT75191 combine a 10-bit temp-
erature-to-digital converter, a 10-bit 4-channel ADC, and a
quad 12-/10-/8-bit DAC, respectively, in a 16-lead QSOP
package. The parts also include a band gap temperature sensor
and a 10-bit ADC to monitor and digitize the temperature
reading to a resolution of 0.25°C.
SMBus/I2C interface. They feature a standby mode that is
controlled through the serial interface.
The reference for the four DACs is derived either internally or
from a reference pin. The outputs of all DACs may be updated
simultaneously using the software LDAC function or the
LDAC
external
pin. The ADT7516/ADT7517/ADT7519
The ADT7516/ADT7517/ ADT7519 operate from a single 2.7 V
to 5.5 V supply. The input voltage range on the ADC channels is
0 V to 2.28 V, and the input bandwidth is dc. The reference for
the ADC channels is derived internally. The output voltage of
the DAC ranges from 0 V to VDD, with an output voltage settling
time of 7 ms typical.
incorporate a power-on reset circuit, which ensures that the
DAC output powers up to 0 V and remains there until a valid
write takes place.
The ADT7516/ADT7517/ADT7519’s wide supply voltage range,
low supply current, and SPI/I2C compatible interface make
them ideal for a variety of applications, including personal
computers, office equipment, and domestic appliances.
The ADT7516/ADT7517/ADT7519 provide two serial interface
options: a 4-wire serial interface that is compatible with SPI,
QSPI, MICROWIRE, and DSP interface standards, and a 2-wire
1 Protected by the following U.S. Patent Numbers: 6,169,442; 5,867,012;
5,764174. Other patents pending.
Rev. A
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