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ADT7516 Datasheet(PDF) 1 Page - Analog Devices

Part No. ADT7516
Description  SPI/I2C Compatible, Temperature Sensor, Four Channel ADC and Quad Voltage Output DAC
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADT7516 Datasheet(HTML) 1 Page - Analog Devices

 
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SPI/I2C Compatible, Temperature Sensor,
4-Channel ADC and Quad Voltage Output DAC
ADT7516/ADT7517/ADT7519
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703
© 2004 Analog Devices, Inc. All rights reserved.
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 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
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
ADT7516/
ADT7517/
ADT7519
TOP VIEW
(Not to Scale)
VOUT-B 1
VOUT-C
16
VOUT-A 2
VOUT-D
15
VREF-IN 3
AIN4
14
CS
4
SCL/SCLK
13
GND
5
SDA/DIN
12
VDD 6
DOUT/ADD
11
D+/AIN1
7
INT/INT
10
D–/AIN2
8
LDAC/AIN3
9
Figure 1.
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.
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.
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 may be updated
simultaneously using the software LDAC function or the
external LDAC pin. The ADT7516/ADT7517/ADT7519
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.
1 Protected by the following U.S. Patent Numbers: 6,169,442; 5,867,012;
5,764174. Other patents pending.


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