ADS7844NB/1K
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Texas Instruments ADS7844NB/1K

Manufacturer No:
ADS7844NB/1K
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC ADC 12BIT SAR 20SSOP
Delivery:
Payment:
iso14001
iso45001
iso9001
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Product Introduction

Overview

The ADS7844NB/1K, produced by Texas Instruments, is an 8-channel, 12-bit sampling analog-to-digital converter (ADC) with a synchronous serial interface. This device is designed for low power consumption and high-speed operations, making it ideal for various applications including battery-operated systems, data acquisition, test and measurement, and industrial process control. The ADS7844 operates on a single supply voltage ranging from 2.7V to 5V and features a shutdown mode that reduces power dissipation to under 1µW. The device is available in 20-lead QSOP and SSOP packages and is guaranteed to operate over a temperature range of –40°C to +85°C.

Key Specifications

Parameter Value Units
Resolution 12-bit
Number of Channels 8 (single-ended) or 4 (differential)
Conversion Rate Up to 200kHz
Supply Voltage 2.7V to 5V V
Power Dissipation (typical at 200kHz) 3mW mW
Integral Linearity Error (INL) ±1 LSB LSB
Differential Linearity Error (DNL) ±1 LSB LSB
SINAD 72dB dB
Operating Temperature Range –40°C to +85°C °C
Package Type 20-lead QSOP and SSOP

Key Features

  • Single supply operation: 2.7V to 5V
  • 8-channel single-ended or 4-channel differential input
  • Up to 200kHz conversion rate
  • ±1 LSB maximum integral and differential linearity error
  • No missing codes
  • 72dB SINAD (Signal-to-Noise and Distortion Ratio)
  • Synchronous serial interface
  • Shutdown mode reducing power dissipation to under 1µW
  • Available in 20-lead QSOP and SSOP packages
  • Alternate source for MAX147

Applications

  • Data acquisition
  • Test and measurement
  • Industrial process control
  • Personal digital assistants
  • Battery-powered systems
  • Portable multichannel data loggers and measurement equipment

Q & A

  1. What is the resolution of the ADS7844NB/1K?

    The ADS7844NB/1K has a 12-bit resolution.

  2. How many channels does the ADS7844NB/1K support?

    The device supports 8 single-ended channels or 4 differential channels.

  3. What is the maximum conversion rate of the ADS7844NB/1K?

    The maximum conversion rate is up to 200kHz.

  4. What is the supply voltage range for the ADS7844NB/1K?

    The supply voltage range is from 2.7V to 5V.

  5. What is the typical power dissipation of the ADS7844NB/1K at 200kHz?

    The typical power dissipation is 3mW at 200kHz.

  6. What is the operating temperature range of the ADS7844NB/1K?

    The operating temperature range is –40°C to +85°C.

  7. What types of packages are available for the ADS7844NB/1K?

    The device is available in 20-lead QSOP and SSOP packages.

  8. Does the ADS7844NB/1K have a shutdown mode?

    Yes, the device has a shutdown mode that reduces power dissipation to under 1µW.

  9. What is the SINAD (Signal-to-Noise and Distortion Ratio) of the ADS7844NB/1K?

    The SINAD is 72dB.

  10. What are some common applications of the ADS7844NB/1K?

    Common applications include data acquisition, test and measurement, industrial process control, personal digital assistants, and battery-powered systems.

Product Attributes

Number of Bits:12
Sampling Rate (Per Second):200k
Number of Inputs:4, 8
Input Type:Differential, Single Ended
Data Interface:SPI
Configuration:MUX-S/H-ADC
Ratio - S/H:ADC:1:1
Number of A/D Converters:1
Architecture:SAR
Reference Type:External
Voltage - Supply, Analog:2.7V ~ 3.6V, 5V
Voltage - Supply, Digital:2.7V ~ 3.6V, 5V
Features:- 
Operating Temperature:-40°C ~ 85°C
Package / Case:20-SSOP (0.209", 5.30mm Width)
Supplier Device Package:20-SSOP
Mounting Type:Surface Mount
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Similar Products

Part Number ADS7844NB/1K ADS7844N/1K
Manufacturer Texas Instruments Texas Instruments
Product Status Active Active
Number of Bits 12 12
Sampling Rate (Per Second) 200k 200k
Number of Inputs 4, 8 4, 8
Input Type Differential, Single Ended Differential, Single Ended
Data Interface SPI SPI
Configuration MUX-S/H-ADC MUX-S/H-ADC
Ratio - S/H:ADC 1:1 1:1
Number of A/D Converters 1 1
Architecture SAR SAR
Reference Type External External
Voltage - Supply, Analog 2.7V ~ 3.6V, 5V 2.7V ~ 3.6V, 5V
Voltage - Supply, Digital 2.7V ~ 3.6V, 5V 2.7V ~ 3.6V, 5V
Features - -
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C
Package / Case 20-SSOP (0.209", 5.30mm Width) 20-SSOP (0.209", 5.30mm Width)
Supplier Device Package 20-SSOP 20-SSOP
Mounting Type Surface Mount Surface Mount

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