LSB DNL Integrated Circuit Chip MCP4922-E-SL 12 Bit DAC SPI⑩
Interface
Block Diagram
Features
• 12-Bit Resolution
• ±0.2 LSB DNL (typ)
• ±2 LSB INL (typ)
• Single or Dual Channel
• Rail-to-Rail Output
• SPI™ Interface with 20 MHz Clock Support
• Simultaneous Latching of the Dual DACs w/LDAC
• Fast Settling Time of 4.5 µs
• Selectable Unity or 2x Gain Output
• 450 kHz Multiplier Mode
• External VREF Input
• 2.7V to 5.5V Single-Supply Operation
• Extended Temperature Range: -40°C to +125°C
Applications
• Set Point or Offset Trimming
• Sensor Calibration • Digitally-Controlled Multiplier/Divider
• Portable Instrumentation (Battery-Powered)
• Motor Feedback Loop Control
Description
The Microchip Technology Inc. MCP492X are 2.7 – 5.5V, low-power,
low DNL, 12-Bit Digital-to-Analog Converters (DACs) with optional
2x buffered output and SPI interface.
The MCP492X are DACs that provide high accuracy and low noise
performance for industrial applications where calibration or
compensation of signals (such as temperature, pressure and
humidity) are required.
The MCP492X are available in the extended temperature range and
PDIP, SOIC, MSOP and TSSOP packages. The MCP492X 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. The MCP492X include doublebuffered inputs,
allowing simultaneous updates using the LDAC pin. These devices
also incorporate a Power-On Reset (POR) circuit to ensure reliable
power-up.
1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings †
VDD.................................................................................
6.5V
All inputs and outputs w.r.t ............. AVSS –0.3V to VDD+0.3V
Current at Input Pins ...............................±2 mA
Current at Supply Pins
...............................................±50 mA
Current at Output Pins
...............................................±25 mA
Storage temperature .....................................-65°C to
+150°C
Ambient temp. with power applied ................-55°C to +125°C
ESD protection on all pins ........... ≥ 4 kV (HBM), ≥ 400V (MM)
Maximum Junction Temperature (TJ)..........................+150°C
† Notice: Stresses above those listed under “Maximum Ratings” may cause
permanent damage to the device. This is a stress rating only and
functional operation of the device at those or any other conditions
above those indicated in the operational listings of this
specification is not implied. Exposure to maximum rating conditions
for extended periods may affect device reliability.
FIGURE 2-11: MCP4921 IDD vs. Ambient FIGURE 2-14: MCP4922 IDD vs.
Ambient Temperature and VDD. Temperature and VDD.
FIGURE 2-12: MCP4921 IDD Histogram (VDD = 2.7V). FIGURE 2-15:
MCP4922 IDD Histogram (VDD = 2.7V).
FIGURE 2-13: MCP4921 IDD Histogram (VDD = 5.0V). FIGURE 2-16: MCP4922 IDD Histogram (VDD = 5.0V
