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MCP4812T-E/SN

Dual 10-bit DAC, SPI, 2.048V int ref, AEC-Q100, SOIC-8

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Pieza del fabricante：

MCP4812T-E/SN

Paquete：

SOIC-8 (4.9 x 3.9 x 1.75 mm, 1.27mm pitch)

Marca：
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Descripción

Productos

The MCP4812T-E/SN from Microchip is a dual-channel 10-bit voltage output DAC with internal 2.048V reference and SPI interface in an 8-pin SOIC package. Operating from 2.7V to 5.5V, it features 4.5 µs settling time, selectable 1x or 2x gain output, INL of ±0.5 LSB (typ), and DNL of ±0.1 LSB (typ). AEC-Q100 Grade 1 qualified, it supports simultaneous DAC updates via the LDAC pin and includes a power-on reset circuit.

Especificaciones

Resolution 10 bits
Number of DAC Channels 2
Output Type Voltage (buffered, rail-to-rail)
Internal Voltage Reference 2.048V
Output Gain 1x or 2x (selectable)
Settling Time 4.5 µs (typ)
INL (typ) ±0.5 LSB
DNL (typ) ±0.1 LSB
Gain Error ±2% FSR
Interface SPI (3-wire, Microwire compatible)
Tensión de alimentación 2.7V to 5.5V
Supply Current (typ) 415 µA
Temperatura de funcionamiento -40°C to +125°C
Paquete SOIC-8 (4,9 x 3,9 mm)

Características

  • Dual 10-bit DAC with independent output channels
  • Internal 2.048V voltage reference
  • Selectable unity or 2x gain output
  • 4.5 µs settling time (typical)
  • Rail-to-rail output swing
  • SPI interface with 20 MHz clock support
  • Simultaneous DAC update via LDAC pin
  • Power-on Reset (POR) for reliable startup
  • AEC-Q100 Grade 1 qualified for automotive
  • Double-buffered input registers

Aplicaciones

  • Set point and offset trimming in control systems
  • Sensor calibration and compensation
  • Portable instrumentation and battery-powered devices
  • Optical communication device calibration
  • Automotive analog output generation

The MCP4812T-E/SN from Microchip is a dual-channel 10-bit voltage output DAC with an internal 2.048V reference in an 8-pin SOIC package. Operating from 2.7V to 5.5V, it features 4.5 µs settling time, selectable 1x/2x gain output, rail-to-rail output swing, and SPI interface up to 20 MHz. AEC-Q100 Grade 1 qualified with double-buffered registers and LDAC pin for simultaneous updates, it is designed for set point control, sensor calibration, and portable instrumentation applications.

The MCP4812T-E/SN uses a resistor-string DAC architecture where the digital input code selects a tap point along a precision resistor divider chain connected to the internal 2.048V reference. This architecture inherently provides low DNL error (±0.1 LSB typ) and monotonicity without missing codes. The output buffer amplifier provides rail-to-rail output swing and can be configured for 1x gain (0 to VREF output) or 2x gain (0 to 2×VREF output) via the gain selection bit in the SPI command word. Double-buffered input registers allow both DAC channels to be loaded independently via SPI, then updated simultaneously using the LDAC (latch DAC) pin for synchronized output changes. The SPI interface supports clock rates up to 20 MHz for fast updates. The Power-on Reset (POR) circuit ensures both DAC outputs start at zero-scale during power-up, preventing glitch outputs. The 415 µA typical supply current enables battery-powered operation.

Pin Nombre Tipo Función
1 VDD Potencia Supply voltage (2.7V to 5.5V)
2 CS# Entrada Chip Select (active low)
3 SCK Entrada Serial Clock input
4 SDI Entrada Serial Data Input
5 LDAC# Entrada Latch DAC input (active low, simultaneous update)
6 VOUTB Salida DAC Channel B analog output
7 VSS Potencia Suelo
8 VOUTA Salida DAC Channel A analog output
  • Set point and offset trimming in closed-loop control systems
  • Sensor calibration and compensation circuits
  • Portable and battery-powered instrumentation
  • Optical communication device bias calibration
  • Automotive analog reference and control voltage generation
Fabricante Número de pieza Paquete Notas
Microchip MCP4802T-E/SN SOIC-8 8-bit version, same family
Microchip MCP4822T-E/SN SOIC-8 12-bit version, higher resolution
Microchip MCP4812T-E/MS MSOP-8 Same spec, smaller MSOP package
Texas Instruments DAC60508ZRTER VQFN-16 8-channel 12-bit DAC
Dispositivos analógicos AD5662BRJZ-1 SOT-23-8 16-bit, single channel nanoDAC
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