Microchip Technology Audio Digital-to-Analog Converter Instrukcja Użytkownika Pobierz pdf (Strona 5)

High-Performance, Stand-Alone ADCs for a Variety of Embedded Systems Applications

4 ADC Converter Function Pack Design Guide

ADC Converter Function Pack Design Guide 5

High-Performance, Stand-Alone ADCs for a Variety of Embedded Systems Applications

SAR CONVERTERS – LOW-POWER 100 KSPS AND 250 KSPS, 10 AND 12-BIT ADCs

The MCP3001 and MCP3201 are 10- and 12-bit SAR ADCs

that offer standby currents of less than 1 µA, and active

currents of 300 µA at 100 ksps. Both devices offer on-board

sample and hold circuitry.

Each device has one pseudo-differential input with exceptional

linearity specifications of ±1 LSB DNL and ±1 LSB INL over

temperature.

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MCP3001 and MCP3201 Applications:

n Sensor Interface

n Process Control

n Data Acquisition

n Battery-Operated Systems

MCP3001 and MCP3201 Key Features:

n 10-bit resolution (MCP3001)

n 12-bit resolution (MCP3201)

n ±1 LSB DNL, ±1 LSB INL max. (MCP3001)

n ±1 LSB DNL, ±1 LSB INL max. (MCP3201)

n On-chip sample and hold

n SPI™ serial interface (modes 0,0 and 1,1)

n Single-supply specified operation: 2.7V to 5.5V

10-bit, 75 ksps max sampling rate at V

= 2.7V (MCP3001)

10-bit, 200 ksps max sampling rate at V

= 5V (MCP3001)

12-bit, 50 ksps max sampling rate at V

= 2.7V (MCP3201)

n 12-bit, 100 ksps max sampling rate V

= 5V (MCP3201)

n Low-power CMOS technology:

- 500 nA standby current

- 300 µA active current at 5V, 100 ksps

n Temperature range:

- Industrial: -40°C to +85°C

Communication with the device is accomplished by using a

simple serial interface compatible with the SPI™ protocol. Both

devices operate over a broad voltage range of 2.7V to 5.5V.

ADC Product Specifications

Device

Resolution

(bits)

Maximum

Sampling

Rate

(samples/sec)

# of

Input

Channels Input Type Interface

Input

Voltage

Range

(V)

Active

Current

Max.

(µA)

Max.

INL

Temp.

Range

(C°) Packages

MCP3001 10 200 1 Pseudo-Diff. SPI™ 2.7 to 5.5 400 +1 LSB -40 to +85

8 PDIP, MSOP, SOIC, TSSOP

MCP3201 12 100 1 Single-ended SPI 2.7 to 5.5 400 ±1 LSB -40 to +85 8 PDIP, SOIC, TSSOP

1 2 3 4 5 6 7 8 9 10 ... 15 16

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