MCP4921 12-Bit DAC with SPI Interface
Single-channel 12-bit Digital-to-Analog Converter (DAC) with an internal output amplifier and high-speed SPI serial interface (up to 20 MHz). Features user-selectable gain (1x or 2x) and selectable external voltage reference input.
Aliase:MCP4921-E/P, MCP4921-I/P, 12-Bit SPI DAC, Digital to Analog Converter
DIP-8 Top View
8 Pins
Pinout Table8
| Pin | Signal / Name | Type | Alternative Functions |
|---|---|---|---|
| 1 | VDD | Power | Positive Power Supply (+2.7V to +5.5V) |
| 2 | ~CS | Digital | SPI Chip Select Input (Active Low) |
| 3 | SCK | Digital | SPI Serial Clock Input (Up to 20 MHz) |
| 4 | SDI | Digital | SPI Serial Data Input (MOSI) |
| 5 | ~LDAC | Digital | DAC Latch Load Input (Active Low, updates DAC output register) |
| 6 | VREF | Analog | External Voltage Reference Input (0.04V to VDD - 0.04V) |
| 7 | VSS | Ground | Ground Reference (0V) |
| 8 | VOUT | Analog | Buffered Analog Output Voltage |