AD7291BCPZ Part Information

Details for AD7291BCPZ by Analog Devices

Semiconductors - ICs>Data & Signal Conversion>Analog-to-Digital Converters - ADC

Part Description

The AD7291 is a 12-bit, low power, 8-channel, successive approximation analog-to-digital converter (ADC) with an internal temperature sensor. The device operates from a single 3.3 V power supply and features an I2C-compatible interface. The device contains a 9- channel multiplexer and a track-and-hold amplifier than can handle frequencies up to 30 MHz. The device has an on-chip 2.5 V reference that can be disabled to allow the use of an external reference. The AD7291 provides a 2-wire serial interface compatible with I2C interfaces. The I2C interface supports standard and fast I2C interface modes. The AD7291 normally remains in a partial power-down state while not converting and powers up for conversions. The conversion process can be controlled by a command mode where conversions occur across I2C write operations or an autocycle mode selected through software control. The AD7291 includes a high accuracy band gap temperature sensor, which is monitored and digitized by the 12-bit ADC to give a resolution of 0.25°C. The AD7291 offers a programmable sequencer, which enables the selection of a preprogrammable sequence of channels for conversion. On-chip limit registers can be programmed with high and low limits for the conversion results; an out-of-range indicator output (ALERT) becomes active when the programmed high or low limits are violated by the conversion result. This output can be used as an interrupt.

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Part Features

  • 12-bit SAR ADC 8 single-ended analog input channels Analog input range: 0 V to 2.5 V 12-bit temperature-to-digital converter Temperature sensor accuracy of u00b11u00b0C typical Channel sequencer operation Specified for VDD of 2.8 V to 3.6 V Logic voltage VDRIVE = 1.65 V to 3.6 V Internal 2.5 V reference I2C-compatible serial interface supports standard and fast speed modes Out of range indicator/alert function Autocycle mode Power-down current: 12 u03bcA maximum Temperature range: u221240u00b0C to +125u00b0C 20-lead LFCSP package

Part Specifications

Resolution (Bits) 12bit
Sampling Rate 22.22kSPS
Input Channel Type Single Ended
Data Interface 2 Wire I2C Serial
Supply Voltage Type Single
Supply Voltage Min 1.65V
Supply Voltage Max 3.6V
ADC / DAC Case Style LFCSP
No. of Pins 20Pins
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range Octal 12-Bit SAR ADCs
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 3 - 168 hours
SVHC No SVHC (07-Jul-2017)
Base Number 7291
No. of Channels 8Channels
Operating Temperature Range -40°C to +125°C
Supply Voltage Range 1.65V to 3.6V
Supply Voltage Range - Analogue 2.8V to 3.6V
RoHS Compliant

Alternative Part Descriptions

  • Single ADC SAR 12-bit Serial LFCSP20EP | RS Components
  • Analogue to Digital Converter, 12 bit, 22.22 kSPS, Single, 1.65 V, 3.6 V, LFCSP RoHS Compliant: Yes | Newark Electronics
  • A/D Converter IC [Analog Devices] AD7291BCPZ A/D Converter IC | Distrelec
  • CONVERTER - ADC | Richardson RFPD

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The AD7291BCPZ is listed under Semiconductors - ICs > Data & Signal Conversion > Analog-to-Digital Converters - ADC.

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You can view similar parts to AD7291BCPZ when available in the Analog-to-Digital Converters - ADC range under the specifications section at the bottom of the details page.

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Is the AD7291BCPZ RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Farnell.

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Authorised distributors including RS Components, Newark Electronics, Distrelec and Richardson RFPD have stock available or on a lead time for AD7291BCPZ.

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