MCP3553

Features:

• 22-bit ADC in Small 8-pin MSOP Package with Automatic Internal Offset and Gain Calibration
• Low-Output Noise of 2.5 V_RMS with Effective Resolution of 21.9 bits (MCP3551)
• 3 V Typical Offset Error
• 2 ppm Typical Full-Scale Error
• 6 ppm Maximum INL Error
• Total Unadjusted Error Less Than 10 ppm
• No Digital Filter Settling Time, Single-Command Conversions through 3-wire SPI™ Interface
• Ultra-Low Conversion Current (MCP3551):
- 100A typical (V_DD = 2.7V)
- 120A typical (V_DD = 5.0V)
• Differential Input with VSS to V_DD Common Mode Range
• 2.7V to 5.5V Single-Supply Operation
• Extended Temperature Range:
- -40to +125




Application

• Weigh Scales
• Direct Temperature Measurement
• 6-digit DVMs
• Instrumentation
• Data Acquisition
• Strain Gauge Measurement




Pinout






Specifications

VDD...................................................................................7.0V
All inputs and outputs w.r.t V_SS ............. 0.3V to V_DD + 0.3V
Difference Input Voltage ....................................... |V_DD - V_SS|
Output Short Circuit Current .................................Continuous
Current at Input Pins ...................................................±2 mA
Current at Output and Supply Pins ............................±10 mA
Storage Temperature......................................-65 to +150
Ambient temp. with power applied .................-55 to +125
ESD protection on all pins (HBM, MM) ............ 6 kV, 400V
Maximum Junction Temperature (T_J) . ..........................+150

† 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 operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

Parameter Name	Value
Typical Supply Current (A)	140
Typical INL (ppm)	2
Max Sample Rate (samples/sec)	60
Input Type	1 Differential
Interface	SPI
Resolution (bits)	22
Supply Voltage Range (V)	2.7 to 5.5

Parameter NameValueTypical Supply Current (A)140Typical INL (ppm)2Max Sample Rate (samples/sec)60Input Type1 Differential InterfaceSPIResolution (bits)22Supply Voltage Range (V)2.7 to 5.5




Description

The Microchip Technology Inc. MCP3553 devices are 2.7V to 5.5V low-power, 22-bit Delta-Sigma Analog-to-Digital Converters (ADCs). The devices offer output noise as low as 2.5 V_RMS, with a total unadjusted error of 10 ppm. The family exhibits 6 ppm Integral Non-Linearity (INL) error, 3 V offset error and less than 2 ppm full-scale error. The MCP3553 devices provide high accuracy and low noise performance for applications where sensor measurements (such as pressure, temperature and humidity) are performed. With the internal oscillator and high oversampling rate, minimal external components MCP3553 are required for high-accuracy applications.

This MCP3553 line has fully differential analog inputs, making it compatible with a wide variety of sensor, industrial control or process control applications.

The MCP3553 devices operate from -40 to +125 and are available in the space-saving 8-pin MSOP and SOIC packages.