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AD7291BCPZ
8-Channel Single ADC SAR 22.22ksps 12-bit Serial 20-Pin LFCSP EP Tray
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Manufacturer:
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Mfr.Part #:
AD7291BCPZ
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Datasheet:
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Number of Bits:
12
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Sampling Rate (Per Second):
22.22k
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Number of Inputs:
8
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Input Type:
Single Ended
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EDA/CAD Models:
Availability: 7830 PCS
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AD7291BCPZ General Description
The AD7291BCPZ is a 12-bit, low-power, multichannel, successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices, Inc. This ADC is designed for precision data conversion in various electronic systems.
The part operates from a single 3.3 V power supply and features an I2C-compatible interface. The part 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.
Product Highlights
- Ideally suited to monitoring system variables in a variety of systems including telecommunications, process control, and industrial control.
- I2C-compatible serial interface. Standard and fast modes.
- Automatic partial power-down while not converting to maximize power efficiency.
- Channel sequencer operation.
- Integrated temperature sensor with 0.25°C resolution.
- Out of range indicator that can be software disabled or enabled.
AD7291BCPZ Pin Configuration
Key Features
- Temperature sensor accuracy of ±1°C typical
- Channel sequencer operation
- I²C-compatible serial interface supports standard and fast speed modes
- Out of range indicator/alert function
- Power-down current - 12µA maximum
Application
- Industrial Measurement and Control: In industrial control systems and instrumentation for precise measurement of analog signals.
- Data Acquisition Systems: In data acquisition systems, test and measurement equipment, and data loggers for converting real-world data into digital form.
- Automotive Electronics: For automotive control and monitoring applications, such as engine control units (ECUs) and sensor interfacing.
- Medical Devices: In medical instruments and devices that require high-precision data conversion, such as patient monitors and diagnostic equipment.
- Communication Equipment: In telecom infrastructure, network equipment, and communication devices for analog signal processing.
- Consumer Electronics: Utilized in high-end audio equipment, portable media players, and other consumer gadgets for high-quality audio signal conversion.
- Energy Management: In energy management systems and smart meters for monitoring and controlling energy consumption.
- Avionics: In avionics and aerospace applications, including navigation and control systems.
- Scientific Research: Employed in scientific experiments and research equipment for accurate data collection.
AD7291BCPZ Functional Block Diagram
Specifications
Category | Integrated Circuits (ICs)Data AcquisitionAnalog to Digital Converters (ADC) | Series | - |
Number of Bits | 12 | Sampling Rate (Per Second) | 22.22k |
Number of Inputs | 8 | Input Type | Single Ended |
Data Interface | I²C | Configuration | MUX-S/H-ADC |
Ratio - S/H:ADC | 1:1 | Number of A/D Converters | 1 |
Architecture | SAR | Reference Type | External, Internal |
Voltage - Supply, Analog | 2.8V ~ 3.6V | Voltage - Supply, Digital | 2.8V ~ 3.6V |
Features | Selectable Address, Temperature Sensor | Operating Temperature | -40°C ~ 125°C |
Mounting Type | Surface Mount | Base Product Number | AD7291 |
AD7291BCPZ Equivalent Parts
You may consider these replacement and alternative parts:
Part Number
In-Stock
Package
Description
Part Number: AD7298-1BCPZ
In-Stock: 4834
Package: LFCSP20
Description: 8-Channel Single ADC SAR 1Msps 10-bit Serial 20-Pin LFCSP EP Tray
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Availability: 7830 PCS
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