MCP4822 Microchip Technology, MCP4822 Datasheet
MCP4822
Manufacturer Part Number
MCP4822
Description
8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter
Manufacturer
Microchip Technology
Datasheet
1.MCP4822.pdf
(46 pages)
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Features
• MCP4802: Dual 8-Bit Voltage Output DAC
• MCP4812: Dual 10-Bit Voltage Output DAC
• MCP4822: Dual 12-Bit Voltage Output DAC
• Rail-to-Rail Output
• SPI Interface with 20 MHz Clock Support
• Simultaneous Latching of the Dual DACs
• Fast Settling Time of 4.5 µs
• Selectable Unity or 2x Gain Output
• 2.048V Internal Voltage Reference
• 50 ppm/°C V
• 2.7V to 5.5V Single-Supply Operation
• Extended Temperature Range: -40°C to +125°C
Applications
• Set Point or Offset Trimming
• Sensor Calibration
• Precision Selectable Voltage Reference
• Portable Instrumentation (Battery-Powered)
• Calibration of Optical Communication Devices
Related Products
2010 Microchip Technology Inc.
MCP4801
MCP4811
MCP4821
MCP4802
MCP4812
MCP4822
MCP4901
MCP4911
MCP4921
MCP4902
MCP4912
MCP4922
with LDAC pin
Note 1: The products listed here have similar
P/N
8/10/12-Bit Dual Voltage Output Digital-to-Analog Converter
AC/DC performances.
Resolution
REF
DAC
10
12
10
12
10
12
10
12
8
8
8
8
Temperature Coefficient
(1)
with Internal V
Channels
No. of
1
1
1
2
2
2
1
1
1
2
2
2
MCP4802/4812/4822
Reference
(2.048V)
External
Voltage
Internal
(V
REF
)
REF
and SPI Interface
Description
The MCP4802/4812/4822 devices are dual 8-bit, 10-bit
and 12-bit buffered voltage output Digital-to-Analog
Converters (DACs), respectively. The devices operate
from a single 2.7V to 5.5V supply with SPI compatible
Serial Peripheral Interface.
The devices have a high precision internal voltage
reference (V
full-scale range of the device to be 2.048V or 4.096V by
setting the Gain Selection Option bit (gain of 1 of 2).
Each DAC channel can be operated in Active or
Shutdown mode individually by setting the Configuration
register bits. In Shutdown mode, most of the internal
circuits in the shutdown channel are turned off for power
savings and the output amplifier is configured to present
a known high resistance output load (500 k typical.
The
allowing synchronous updates of two DAC outputs
using the LDAC pin. These devices also incorporate a
Power-on Reset (POR) circuit to ensure reliable power-
up.
The devices utilize a resistive string architecture, with
its inherent advantages of low DNL error, low ratio
metric temperature coefficient and fast settling time.
These devices are specified over the extended
temperature range (+125°C).
The devices provide high accuracy and low noise
performance for consumer and industrial applications
where calibration or compensation of signals (such as
temperature, pressure and humidity) are required.
The MCP4802/4812/4822 devices are available in the
PDIP, SOIC and MSOP packages.
Package Types
devices
REF
MCP4802: 8-bit dual DAC
MCP4812: 10-bit dual DAC
MCP4822: 12-bit dual DAC
SCK
8-Pin PDIP, SOIC, MSOP
V
SDI
CS
DD
= 2.048V). The user can configure the
include
1
2
3
4
double-buffered
8
7
6
5
V
V
V
LDAC
OUTA
SS
OUTB
www.DataSheet4U.com
DS22249A-page 1
registers,
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