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AD7634BSTZ The AD7634BSTZ is an 18-bit successive approximation register (SAR) analog-to-digital converter capable of sampling rates up to 670 kSPS in warp mode. It features a differential input with programmable voltage ranges and is offered in a 48-lead LQFP package.
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AD7634BSTZ

Available from 1 distributors
Mfr Name: Analog Devices / Maxim Integrated
Analog Devices / Maxim Integrated
The AD7634BSTZ is an 18-bit successive approximation register (SAR) analog-to-digital converter capable of sampling rates up to 670 kSPS in warp mode. It features a differential input with programmable voltage ranges and is offered in a 48-lead LQFP package.
✓ Total Stock: 2 pcs

AD7634BSTZ Available from 1 distributor

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Components Technology Group, Inc. ✓
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2 pcs
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AD7634BSTZ Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Architecture
Configuration
Data Interface
Input Type
Mounting Type
Number of A
Number of Bits
Number of Inputs
Operating Temperature
Ratio
Reference Type
SVHC Present
Sampling Rate (Per Second)
Supplier Device Package
Voltage
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AD7634BSTZ Description

Short technical summary and product information.

The AD7634BSTZ is an 18-bit charge redistribution SAR ADC fabricated on Analog Devices' iCMOS high voltage process. It offers a maximum sampling rate of 670 kSPS in warp mode, 570 kSPS in normal mode, and 450 kSPS in impulse mode.

 

The ADC features a differential input with programmable voltage ranges selectable via pins or SPI: 5 V (10 V p-p), +10 V (20 V p-p), ±5 V (20 V p-p), and ±10 V (40 V p-p). Typical INL is ±1.5 LSB, with a maximum of ±2.5 LSB. Dynamic performance includes 101 dB SNR at 2 kHz, -112 dB THD, and 102.5 dB dynamic range.

 

Power dissipation scales with operating mode: 180 mW at 670 kSPS (warp), 28 mW at 100 kSPS (impulse), and 10 mW at 1 kSPS (impulse). The device includes an internal 5 V reference with 3 ppm/°C drift. Data interface options include parallel (18-/16-/8-bit) and serial 5 V/3.3 V SPI/QSPI/MICROWIRE/DSP-compatible interfaces.

 

The AD7634BSTZ is supplied in a 48-lead LQFP (7x7 mm) package, surface mount, and operates over -40°C to 85°C. It is suitable for applications such as CT scanners, high dynamic data acquisition, spectrum analysis, and instrumentation.

AD7634BSTZ Quick Information

Product Type: Analog to Digital Converter (ADC)
Series: PulSAR
Canonical Name: AD7634BSTZ - 18-Bit, 670 kSPS, Differential Input SAR ADC with Programmable Input Ranges
Subcategory: Successive Approximation Register (SAR) ADC

AD7634BSTZ Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

AD7634BSTZ Features

  • 18-bit SAR architecture with no missing codes.
  • Sampling rate up to 670 kSPS in warp mode.
  • Programmable differential input voltage ranges.
  • Low power dissipation: 10 mW at 1 kSPS.
  • 48-lead LQFP surface mount package.

AD7634BSTZ Applications

  • CT scanners and medical imaging systems.
  • High dynamic data acquisition systems.
  • Spectrum analysis and instrumentation.
  • Process control and automation.
  • Replacement for sigma-delta converters.

AD7634BSTZ FAQs

7 frequently asked questions generated from this part’s specifications.
What is the resolution of the AD7634BSTZ?

18 bits.

What is the maximum sampling rate?

670 kSPS in warp mode, 570 kSPS in normal mode, and 450 kSPS in impulse mode.

What is the input type and voltage range?

Differential input with programmable ranges: 5 V (10 V p-p), +10 V (20 V p-p), ±5 V (20 V p-p), ±10 V (40 V p-p).

What is the operating temperature range?

-40°C to 85°C.

What package is the AD7634BSTZ available in?

48-lead LQFP (7x7 mm).

Is the AD7634BSTZ RoHS compliant?

RoHS3 Compliant (unverified, low confidence).

What is the supply voltage requirement?

5 V nominal, with AVDD and DVDD compatible with 5 V or 3.3 V.

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