Microchip MCP4921 Bruksanvisning
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MCP4921
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2010 Microchip Technology Inc. DS22248A-page 1
MCP4901/4911/4921
Features
• MCP4901: 8-Bit Voltage Output DAC
• MCP4911: 10-Bit Voltage Output DAC
• MCP4921: 12-Bit Voltage Output DAC
• Rail-to-Rail Output
• SPI Interface with 20 MHz Clock Support
• Simultaneous Latching of the DAC Output
with LDAC Pin
• Fast Settling Time of 4.5 µs
• Selectable Unity or 2x Gain Output
• External Voltage Reference Input
• External Multiplier Mode
• 2.7V to 5.5V Single-Supply Operation
• Extended Temperature Range: -40°C to +125°C
Applications
• Set Point or Offset Trimming
• Precision Selectable Voltage Reference
• Motor Control Feedback Loop
• Digitally-Controlled Multiplier/Divider
• Calibration of Optical Communication Devices
Related Products
Description
The MCP4901/4911/4921 devices are single channel
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
an SPI compatible Serial Peripheral Interface. The user
can configure the full-scale range of the device to be
VREF or 2*VREF by setting the gain selection option bit
(gain of 1 of 2).
The user can shut down the device by setting the Con-
figuration Register bit. In Shutdown mode, most of the
internal circuits are turned off for power savings, and
the output amplifier is configured to present a known
high resistance output load (500 ktypical.
The devices include double-buffered registers,
allowing synchronous updates of the DAC output 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 Differential Non-Linear-
ity (DNL) error 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 MCP4901/4911/4921 devices are available in the
PDIP, SOIC, MSOP and DFN packages.
Package Types
P/N DAC
Resolution
No. of
Channels
Voltage
Reference
(VREF)
MCP4801 8 1
Internal
(2.048V)
MCP4811 10 1
MCP4821 12 1
MCP4802 8 2
MCP4812 10 2
MCP4822 12 2
MCP4901 8 1
External
MCP4911 10 1
MCP4921 12 1
MCP4902 8 2
MCP4912 10 2
MCP4922 12 2
Note: The products listed here have similar AC/DC
performances.
DFN-8 (2x3)*
1
2
3
4
8
7
6
5
CS
SCK
SDI
VDD
VSS
VOUT
LDAC
MCP4901: 8-bit single DAC
MCP4911: 10-bit single DAC
MCP4921: 12-bit single DAC
MCP49x1
8-Pin PDIP, SOIC, MSOP
1
2
3
4
8
7
6
5
CS
SCK
SDI
VDD
VSS
VOUT
LDAC
VREF VREF
EP
9
* Includes Exposed Thermal Pad (EP); see Table 3-1.
8/10/12-Bit Voltage Output Digital-to-Analog Converter
with SPI Interface
Produktspecifikationer
| Varumärke: | Microchip |
| Kategori: | Inte kategoriserad |
| Modell: | MCP4921 |
| Färg på produkten: | Zwart |
| Inbyggd display: | Ja |
| Vikt: | 399 g |
| LED-indikatorer: | Bezig met opladen |
| Batterikapacitet: | 20000 mAh |
| På / Av knapp: | Ja |
| Snabbladdning: | Ja |
| Trådlös laddning: | Nee |
| Laddningskälla: | USB |
| Laddare kompatibilitet: | Digital camera, E-book reader, Headphones/Headset, MP3/MP4, Mobile phone/Smartphone, Portable gaming console, Portable speaker, Smartwatch, Tablet |
| Antal samtidigt anslutna enheter (max): | 3 |
| Ingångsgränssnitt: | Micro-USB + USB Type-C |
| Batteriteknik: | Lithium-Ion (Li-Ion) |
| Type beeldscherm: | LED |
| Snabbladdningsteknik: | Quick Charge 3.0 |
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