ADT7516_15 Datasheet, PDF (1/44 Pages) Analog Devices – SPI-/IC-Compatible, Temperature Sensor, 4-Channel ADC and Quad Voltage Output

SPI-/I²C-Compatible, Temperature Sensor,
4-Channel ADC and Quad Voltage Output
ADT7516/ADT7517/ADT7519
FEATURES
ADT7516: four 12-bit DACs
ADT7517: four 10-bit DACs
ADT7519: four 8-bit DACs
Buffered voltage output
Guaranteed monotonic by design over all codes
10-bit temperature-to-digital converter
10-bit 4-channel ADC
DC input bandwidth
Input range: 0 V to 2.28 V
Temperature range: −40°C to +120°C
Temperature sensor accuracy: ±0.5°C typ
Supply range: 2.7 V to 5.5 V
DAC output range: 0 V to 2 VREF
Power-down current: <10 μA
Internal 2.28 VREF option
Double-buffered input logic
Buffered reference input
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
SMBus packet error checking (PEC) compatible
16-lead QSOP package
APPLICATIONS
Portable battery-powered instruments
Personal computers
Smart battery chargers
Telecommunications systems
Electronic text equipment
Domestic appliances
Process control
PIN CONFIGURATION
V_OUT-B 1
16 V_OUT-C
V_OUT-A 2 _ADT7516/ 15 V_OUT-D
V_REF-IN 3 ADT7517/ 14 AIN4
CS 4 ^ADT7519 13 SCL/SCLK
GND 5 ^{TOP VIEW} 12 SDA/DIN
(Not to Scale)
V_DD 6
11 DOUT/ADD
D+/AIN1 7
10 INT/INT
D–/AIN2 8
9 LDAC/AIN3
Figure 1.
GENERAL DESCRIPTION
The ADT7516/ADT7517/ADT7519¹ combine a 10-bit tempera-
ture-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.
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 μs typical.
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
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 can be updated
simultaneously using the software LDAC function or the
external LDAC pin. The ADT7516/ADT7517/ADT7519
incorporate a power-on reset circuit, ensuring that the DAC
output powers up to 0 V and remains there until a valid write
takes place.
The wide supply voltage range, low supply current, and SPI-/
I²C-compatible interface of the ADT7516/ADT7517/ADT7519
make them ideal for a variety of applications, including
personal computers, office equipment, and domestic appliances.
1 _{Protected by U.S. Patent Numbers: 6,169,442; 5,867,012; and 5,764,174.}
Rev. B
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