MCP3421A0T-E/CH

MCP3421 18-Bit Analog-to-Digital Converter with I2C Interface and On-Board Reference Features Description • 18-bit ΔΣ ADC in a SOT-23-6 package • Differential Input Operation • Self Calibration of Internal Offset and Gain Per Each Conversion • On-Board Voltage Reference: - Accuracy: 2.048V ± 0.05% - Drift: 15 ppm/°C • On-Board Programmable Gain Amplifier (PGA): - Gains of 1,2, 4 or 8 • On-Boa...
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Технические характеристики

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Корпус SOT236
Разрядность АЦП
Кол-во измерительных каналов
Частота захвата сигнала
Тип аналого-цифрового преобразователя
Цифровой интерфейс
Конфигурация аналогового входа
Эффективная разрядность АЦП
Диапазон питающих напряжений аналоговой части ±
Диапазон питающих напряжений цифровой части
Диапазон рабочих температур
Примечание
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Аналоги 3

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Тип Наименование Корпус Упаковка i Разрядность Каналов Скорость Архитектура Интерфейс Вход SNR Эфф.Разрядность Pпотр ИОН Uint.REF Uаналог Uцифр T раб Примечание Карточка
товара
F~ ADS1110A0IDBVR (TI) SOT236 в ленте 3000 шт АЦП - [SOT-23-6]; Разрядность: 16 бит; Каналов: 1; Скорость: 128 Гц; Архитектура: Delta... 16-Bit Delta-Sigma ADC with internal reference, PGA and oscillator. I2C Serial Interface
F~ ADS1000A0IDBVR (TI) SOT236 3000 шт LOW POWER, 12-BIT ANALOG-TO-DIGITAL CONVERTER Питание в качестве опорного напряжения ADC, Proprietary Method, 12-Bit, 1 Func, 1 Channel, Serial Access, PDSO6
F~ ADS1100A0IDBVR (TI) SOT236 3000 шт ADS1100: SELF-CALIBRATING, 16-BIT ANALOG-TO-DIGITAL CONVERTER Питание в качестве опорного напряжения ADC, Delta-Sigma, 16-Bit, 1 Func, 1 Channel, Serial Access, PDSO6

Файлы 2

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MCP3421 18-Bit Analog-to-Digital Converter with I2C Interface and On-Board Reference Features Description • 18-bit ΔΣ ADC in a SOT-23-6 package • Differential Input Operation • Self Calibration of Internal Offset and Gain Per Each Conversion • On-Board Voltage Reference: - Accuracy: 2.048V ± 0.05% - Drift: 15 ppm/°C • On-Board Programmable Gain Amplifier (PGA): - Gains of 1,2, 4 or 8 • On-Board Oscillator • INL: 10 ppm of FSR (FSR = 4.096V/PGA) • Programmable Data Rate Options: - 3.75 SPS (18 bits) - 15 SPS (16 bits) - 60 SPS (14 bits) - 240 SPS (12 bits) • One-Shot or Continuous Conversion Options • Low Current Consumption: - 145 µA typical (VDD= 3V, Continuous Conversion) - 39 µA typical (VDD= 3V, One-Shot Conversion with 1 SPS) • Supports I2C Serial Interface: - Standard, Fast and High Speed Modes • Single Supply Operation: 2.7V to 5.5V • Extended Temperature Range: -40°C to +125°C The MCP3421 is a single channel low-noise, high accuracy ΔΣ A/D converter with differential inputs and up to 18 bits of resolution in a small SOT-23-6 package. The on-board precision 2.048V reference voltage enables an input range of ±2.048V differentially (Δ voltage = 4.096V). The device uses a two-wire I2C compatible serial interface and operates from a single 2.7V to 5.5V power supply. The MCP3421 device performs conversion at rates of 3.75, 15, 60, or 240 samples per second (SPS) depending on the user controllable configuration bit settings using the two-wire I2C serial interface. This device has an on-board programmable gain amplifier (PGA). The user can select the PGA gain of x1, x2, x4, or x8 before the analog-to-digital conversion takes place. This allows the MCP3421 device to convert a smaller input signal with high resolution. The device has two conversion modes: (a) Continuous mode and (b) One-Shot mode. In One-Shot mode, the device enters a low current standby mode automatically after one conversion. This reduces current consumption greatly during idle periods. The MCP3421 device can be used for various high accuracy analog-to-digital data conversion applications where design simplicity, low power, and small footprint are major considerations. Block Diagram VSS VDD Typical Applications • Portable Instrumentation • Weigh Scales and Fuel Gauges • Temperature Sensing with RTD, Thermistor, and Thermocouple • Bridge Sensing for Pressure, Strain, and Force. Voltage Reference (2.048V) Gain = 1, 2, 4, or 8 VIN+ PGA Package Types MCP3421 SOT-23-6 ΔΣ ADC Converter Clock Oscillator VIN- VIN+ 1 6 VIN- VSS 2 5 VDD SCL 3 4 SDA © 2009 Microchip Technology Inc. VREF I2C Interface SCL SDA DS22003E-page 1 PDF
Документация на MCP3421A0T-E/CH 

18-Bit ADC with I2C Interface and Onboard Reference I2C Interface and On-Board Reference

Дата модификации: 07.08.2009

Размер: 722.5 Кб

42 стр.

MCP3421 18-Bit Analog-to-Digital Converter with I2C Interface and On-Board Reference Features Description • 18-bit ΔΣ ADC in a SOT-23-6 package • Differential input operation • Self calibration of Internal Offset and Gain per each conversion • On-board Voltage Reference: - Accuracy: 2.048V ± 0.05% - Drift: 5 ppm/°C • On-board Programmable Gain Amplifier (PGA): - Gains of 1,2,4 or 8 • On-board Oscillator • INL: 10 ppm of FSR (FSR = 4.096V/PGA) • Programmable Data Rate Options: - 3.75 SPS (18 bits) - 15 SPS (16 bits) - 60 SPS (14 bits) - 240 SPS (12 bits) • One-Shot or Continuous Conversion Options • Low current consumption: - 145 µA typical (VDD= 3V, Continuous Conversion) - 39 µA typical (VDD= 3V, One-Shot Conversion with 1 SPS) • Supports I2C Serial Interface: - Standard, Fast and High Speed Modes • Single Supply Operation: 2.7V to 5.5V • Extended Temperature Range: -40°C to 125°C The MCP3421 is a single channel low-noise, high accuracy ΔΣ A/D converter with differential inputs and up to 18 bits of resolution in a small SOT-23-6 package. The on-board precision 2.048V reference voltage enables an input range of ±2.048V differentially (Δ voltage = 4.096V). The device uses a two-wire I2C compatible serial interface and operates from a single 2.7V to 5.5V power supply. The MCP3421 device performs conversion at rates of 3.75, 15, 60, or 240 samples per second (SPS) depending on the user controllable configuration bit settings using the two-wire I2C serial interface. This device has an on-board programmable gain amplifier (PGA). The user can select the PGA gain of x1, x2, x4, or x8 before the analog-to-digital conversion takes place. This allows the MCP3421 device to convert a smaller input signal with high resolution. The device has two conversion modes: (a) Continuous mode and (b) One-Shot mode. In One-Shot mode, the device enters a low current standby mode automatically after one conversion. This reduces current consumption greatly during idle periods. The MCP3421 device can be used for various high accuracy analog-to-digital data conversion applications where design simplicity, low power, and small footprint are major considerations. Block Diagram VSS Typical Applications • Portable Instrumentation • Weigh Scales and Fuel Gauges • Temperature Sensing with RTD, Thermistor, and Thermocouple • Bridge Sensing for Pressure, Strain, and Force. VDD Voltage Reference (2.048V) Gain = 1, 2, 4, or 8 VREF VIN+ Package Types PGA ΔΣ ADC Converter Clock Oscillator Top View SOT-23-6 VIN- VIN+ 1 6 VSS 2 5 SCL 3 4 VINVDD SDA I2C Interface SCL © 2006 Microchip Technology Inc. SDA DS22003B-page 1 PDF
Документация на серию MCP3421 

18-Bit ADC with I2C Interface and Onboard Reference DS I2C Interface and On-Board Reference

Дата модификации: 06.12.2006

Размер: 1.04 Мб

30 стр.

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