AD7730BRU-REEL7
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Analog Devices Inc. AD7730BRU-REEL7

Manufacturer No:
AD7730BRU-REEL7
Manufacturer:
Analog Devices Inc.
Package:
Tape & Reel (TR)
Description:
IC AFE 1 CHAN 24BIT 24TSSOP
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The AD7730BRU-REEL7, produced by Analog Devices Inc., is a complete analog front end designed for weigh-scale and pressure measurement applications. This device is capable of accepting low-level signals directly from a transducer and outputs a serial digital word. It features a proprietary programmable gain front end based around an analog modulator, followed by a low pass programmable digital filter. This configuration allows for the adjustment of filter cutoff, output rate, and settling time.

Key Specifications

Parameter Value Conditions/Comments
Input Ranges (Unipolar) 0 mV to +10 mV, +20 mV, +40 mV, +80 mV
Input Ranges (Bipolar) ±10 mV, ±20 mV, ±40 mV, ±80 mV
Peak-to-Peak Resolution 1 in 230,000 counts
Supply Voltage (AVDD) +2.7 V to +5.25 V
Supply Voltage (DVDD) +2.7 V to +5.25 V
AVDD Current (Normal Mode) 10.3 mA max (except 0 mV to ±10 mV), 22.3 mA max (0 mV to ±10 mV)
DVDD Current (Normal Mode) 1.3 mA max (DVDD = 2.7 V to 3.3 V), 2.7 mA max (DVDD = 4.75 V to 5.25 V)
Power Dissipation (Normal Mode) 65 mW max (except 0 mV to ±10 mV), 125 mW max (0 mV to ±10 mV) AVDD = DVDD = +5 V
Offset Drift < 5 nV/°C
Gain Drift < 2 ppm/°C

Key Features

  • Proprietary programmable gain front end based around an analog modulator.
  • Low pass programmable digital filter for adjusting filter cutoff, output rate, and settling time.
  • Two buffered differential programmable gain analog inputs.
  • Differential reference input.
  • On-chip 6-bit DAC for removing TARE voltages.
  • Clock signals for synchronizing ac excitation of the bridge.
  • Self-calibration and system calibration options.
  • Serial interface configurable for three-wire operation, compatible with microcontrollers and digital signal processors.

Applications

  • Weigh-scale applications.
  • Pressure measurement applications.
  • Load cell applications.
  • General industrial measurement systems requiring high precision and low noise.

Q & A

  1. What is the primary function of the AD7730BRU-REEL7?

    The AD7730BRU-REEL7 is a complete analog front end designed for weigh-scale and pressure measurement applications, accepting low-level signals directly from a transducer and outputting a serial digital word.

  2. What are the input ranges supported by the AD7730BRU-REEL7?

    The device supports both unipolar (0 mV to +10 mV, +20 mV, +40 mV, +80 mV) and bipolar (±10 mV, ±20 mV, ±40 mV, ±80 mV) input ranges.

  3. What is the peak-to-peak resolution of the AD7730BRU-REEL7?

    The peak-to-peak resolution achievable directly from the part is 1 in 230,000 counts.

  4. What is the supply voltage range for the AD7730BRU-REEL7?

    The supply voltage range is +2.7 V to +5.25 V for both AVDD and DVDD.

  5. What are the power consumption characteristics of the AD7730BRU-REEL7?

    The device consumes up to 10.3 mA (AVDD) and 1.3 mA (DVDD) in normal mode, with power dissipation of up to 65 mW.

  6. Does the AD7730BRU-REEL7 support self-calibration?

    Yes, the device features self-calibration and system calibration options.

  7. What is the significance of the on-chip 6-bit DAC in the AD7730BRU-REEL7?

    The on-chip 6-bit DAC allows for the removal of TARE voltages.

  8. How does the AD7730BRU-REEL7 interface with other devices?

    The serial interface is configurable for three-wire operation and is compatible with microcontrollers and digital signal processors.

  9. What are the typical applications of the AD7730BRU-REEL7?

    The device is typically used in weigh-scale, pressure measurement, and load cell applications, as well as in general industrial measurement systems requiring high precision and low noise.

  10. What is the drift performance of the AD7730BRU-REEL7?

    The device has an offset drift of less than 5 nV/°C and a gain drift of less than 2 ppm/°C.

Product Attributes

Number of Bits:24
Number of Channels:1
Power (Watts):125 mW
Voltage - Supply, Analog:5V
Voltage - Supply, Digital:2.7V ~ 5.25V
Mounting Type:Surface Mount
Package / Case:24-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:24-TSSOP
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Similar Products

Part Number AD7730BRU-REEL7 AD7730BRUZ-REEL7 AD7730BRZ-REEL7 AD7730LBRU-REEL7 AD7730BR-REEL7 AD7730BRU-REEL
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Product Status Obsolete Active Active Obsolete Obsolete Obsolete
Number of Bits 24 24 24 24 24 24
Number of Channels 1 1 1 1 1 1
Power (Watts) 125 mW 125 mW 125 mW 125 mW 125 mW 125 mW
Voltage - Supply, Analog 5V 5V 5V 5V 5V 5V
Voltage - Supply, Digital 2.7V ~ 5.25V 2.7V ~ 5.25V 2.7V ~ 5.25V 2.7V ~ 5.25V 2.7V ~ 5.25V 2.7V ~ 5.25V
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 24-TSSOP (0.173", 4.40mm Width) 24-TSSOP (0.173", 4.40mm Width) 24-SOIC (0.295", 7.50mm Width) 24-TSSOP (0.173", 4.40mm Width) 24-SOIC (0.295", 7.50mm Width) 24-TSSOP (0.173", 4.40mm Width)
Supplier Device Package 24-TSSOP 24-TSSOP 24-SOIC 24-TSSOP 24-SOIC 24-TSSOP

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