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HomeCommunitySubjectAD7891AP-1REEL IC DAS: Feature, Circuit,Specification

AD7891AP-1REEL IC DAS: Feature, Circuit,Specification

IC DAS 12BIT 500K 44PLCC The AD7891AP-1REEL is an 8-channel, 12-bit data acquisition system with a choice of either parallel or serial interface structure.

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May 28, 2021

Deborah

IC DAS 12BIT 500K 44PLCC

The AD7891AP-1REEL is an 8-channel, 12-bit data acquisition system with a choice of either parallel or serial interface structure. The part contains an input multiplexer, an on-chip track/hold amplifier, a high-speed 12-bit ADC, a 2.5V reference, and a high-speed interface.

AD7891AP-1REEL

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AD7891AP-1REEL Feature

Fast 12-Bit ADC with 1.6s Conversion Time

8 Single-Ended Analog Input Channels

Overvoltage Protection on Each Channel

Selection of Input Ranges: 10V for 2.5V for AD7891-2

Parallel and Serial Interface

On-Chip Track/Hold Amplifier

On-Chip Reference Single-Supply, Low Power Operation (100 mW Max)

 

AD7891AP-1REEL Advantage

The AD7891 provides the option of either a parallel or serial interface structure determined by the MODE pin. The part has standard control inputs and fast data access times for both the serial and parallel interfaces, ensuring easy interfacing to modern microprocessors, microcontrollers, and digital signal processors.

In addition to the traditional dc accuracy specifications, such as linearity, full-scale and offset errors, the part is also specified for dynamic performance parameters, including harmonic distortion and signal-to-noise ratio.

Power dissipation in normal mode is 82 mW typical; in the standby mode, this is reduced to 75 mW typ. The part is available in a 44-terminal MQFP and a 44-lead PLCC.

Specifications

Analog Devices Inc. AD7891AP-1REEL technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. AD7891AP-1REEL.

AD7891AP-1REEL Tech Specifications

Analog Devices Inc. AD7891AP-1REEL technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. AD7891AP-1REEL.

Product Attribute Attribute Value
Mounting TypeSurface Mount
Package / Case44-LCC (J-Lead)
Number of Pins44Pins
Supplier Device Package44-PLCC (16.59x16.59)
Number of Elements1 Element
Operating Temperature-40°C~85°C
PackagingTape & Reel (TR)
Part StatusObsolete
Moisture Sensitivity Level (MSL)3 (168 Hours)
TypeData Acquisition System (DAS)
Max Operating Temperature105°C
Min Operating Temperature-40°C
Max Power Dissipation100mW
Voltage - Supply5V
Product Attribute Attribute Value
Base Part NumberAD7891
Output TypeTTL
Operating Supply Voltage5V
PolarityBipolar
Number of Channels8Channels
InterfaceParallel, Serial
Max Supply Voltage5.25V
Min Supply Voltage4.75V
Power Dissipation100mW
Number of Bits12Bits
Min Input Voltage2.375V
Max Input Voltage2.625V
Supply TypeSingle
Data InterfaceSerial, Parallel
Product Attribute Attribute Value
Sampling Rate500 ksps
Sampling Rate (Per Second)500k
Power Consumption82mW
Integral Nonlinearity (INL)1 LSB
Number of A/D Converters1A/D Converter
Number of Converters1Converter
Voltage Supply SourceSingle Supply
Signal to Noise Ratio (SNR)70 dB
Differential Nonlinearity1 LSB
Resolution (Bits)12 b
Number of Analog Inputs8Analog Inputs
Radiation HardeningNo
RoHS StatusNon-RoHS Compliant
Lead FreeContains Lead
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AD7891AP-1REEL Functional Block Diagram

AD7891AP-1REEL Circuit

AD7891AP-1REEL Manufacturer

Analog Devices (NASDAQ: ADI) is a world leader in the design, manufacture, and marketing of a broad portfolio of high performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs) used in virtually all types of electronic equipment. Since our inception in 1965, we have focused on solving the engineering challenges associated with signal processing in electronic equipment. Used by over 100,000 customers worldwide, our signal processing products play a fundamental role in converting, conditioning, and processing real-world phenomena such as temperature, pressure, sound, light, speed, and motion into electrical signals to be used in a wide array of electronic devices.

Datasheet PDF

Download datasheets and manufacturer documentation for Analog Devices Inc. AD7891AP-1REEL.

AD7891AP-1REEL Documents

Download datasheets and manufacturer documentation for AD7891AP-1REEL

Frequently Asked Questions

1.What are the highlights of AD7891?
The AD7891 is a complete monolithic 12-bit data acquisition system that combines an 8-channel multiplexer, 12-bit ADC, 2.5 V reference, and track/hold amplifier on a single chip. The AD7891-2 features a conversion time of 1.6 ms and an acquisition time of 0.4 ms. This allows a sample rate of 500 kSPS when sampling one channel and 62.5 kSPS when channel hopping. These sample rates can be achieved using either a software or hardware convert start. The AD7891-1 has an acquisition time of 0.6 ms when using a hardware convert start and an acquisition time of 0.7 ms when using a software convert start. These acquisition times allow sample rates of 454.5 kSPS and 435 kSPS, respectively, for hardware and software convert start. Each channel on the AD7891 has overvoltage protection. This means an overvoltage on an unselected channel does not affect the conversion on a selected channel. The AD7891-1 can withstand overvoltages of ±17 V.
2.What is the interface information of AD7891?
The AD7891 provides two interface options, a 12-bit parallel interface and a high speed serial interface. The required interface mode is selected via the MODE pin. The two interface modes are discussed in the following sections.
3.How does an integrated circuit work?
Integrated circuits are a combination of diodes, microprocessors, and transistors in a minimized form on a wafer made of silicon. ... Transistors – These components are used to store voltages or circuit stabilizer. They can be utilized to amplify the given signal and used as switches working in digital circuits.
4.What are the uses of integrated circuit?
An integrated circuit, or IC, is small chip that can function as an amplifier, oscillator, timer, microprocessor, or even computer memory. An IC is a small wafer, usually made of silicon, that can hold anywhere from hundreds to millions of transistors, resistors, and capacitors.
5.What is the symbol of integrated circuit?
Usually, an integrated circuit is represented by a rectangle, with pins extending out of the sides. Each pin should be labeled with both a number, and a function.
FAQ
1.What are the highlights of AD7891?
The AD7891 is a complete monolithic 12-bit data acquisition system that combines an 8-channel multiplexer, 12-bit ADC, 2.5 V reference, and track/hold amplifier on a single chip. The AD7891-2 features a conversion time of 1.6 ms and an acquisition time of 0.4 ms. This allows a sample rate of 500 kSPS when sampling one channel and 62.5 kSPS when channel hopping. These sample rates can be achieved using either a software or hardware convert start. The AD7891-1 has an acquisition time of 0.6 ms when using a hardware convert start and an acquisition time of 0.7 ms when using a software convert start. These acquisition times allow sample rates of 454.5 kSPS and 435 kSPS, respectively, for hardware and software convert start. Each channel on the AD7891 has overvoltage protection. This means an overvoltage on an unselected channel does not affect the conversion on a selected channel. The AD7891-1 can withstand overvoltages of ±17 V.
2.What is the interface information of AD7891?
The AD7891 provides two interface options, a 12-bit parallel interface and a high speed serial interface. The required interface mode is selected via the MODE pin. The two interface modes are discussed in the following sections.
3.How does an integrated circuit work?
Integrated circuits are a combination of diodes, microprocessors, and transistors in a minimized form on a wafer made of silicon. ... Transistors – These components are used to store voltages or circuit stabilizer. They can be utilized to amplify the given signal and used as switches working in digital circuits.
4.What are the uses of integrated circuit?
An integrated circuit, or IC, is small chip that can function as an amplifier, oscillator, timer, microprocessor, or even computer memory. An IC is a small wafer, usually made of silicon, that can hold anywhere from hundreds to millions of transistors, resistors, and capacitors.
5.What is the symbol of integrated circuit?
Usually, an integrated circuit is represented by a rectangle, with pins extending out of the sides. Each pin should be labeled with both a number, and a function.

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