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AD7643BSTZ
AD7643BSTZ
| Part Number | AD7643BSTZ |
|---|---|
| Manufacturer | Analog Devices Inc. (ADI) |
| Category | Integrated Circuits (ICs) > Data Acquisition – Analog to Digital Converters (ADC) |
| Description | 18‑Bit 1.25 MSPS Differential PulSAR Analog‑to‑Digital Converter (ADC), 48‑LQFP Package. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The AD7643BSTZ is an 18‑bit, 1.25 MSPS PulSAR® SAR ADC from Analog Devices. This single‑supply 2.5 V differential‑input ADC integrates internal clock, error correction and a 2.048 V on‑chip reference. It features zero pipeline latency, supports parallel and serial SPI interfaces, and comes in 48‑LQFP package for precision data acquisition, medical, test‑and‑measurement and communication systems.
Core Advantages
18‑Bit Resolution & 1.25 MSPS Speed
18‑bit true resolution at 1.25 MSPS, zero pipeline latency for real‑time dynamic signal acquisition.
Superior AC Performance
High SNR and low THD, ideal for low‑noise precision measurement applications.
Dual Parallel & Serial Interfaces
Parallel port plus SPI/QSPI serial interface, compatible with MCU, DSP and FPGA.
On‑Chip Reference & Low‑Power Operation
Built‑in 2.048 V reference, configurable power‑down modes for power‑sensitive designs.
Key Specifications
| Brand | Analog Devices |
|---|---|
| RoHS Status | RoHS Compliant / Lead‑Free |
| EDA / CAD | PCB Footprint & 3D Model Available upon Request |
| Warranty | 1‑Year Standard Quality Warranty |
| Package / Case | 48‑LQFP (7×7 mm) |
| Mounting Type | Surface Mount (SMD / SMT) |
| Surface Marking / Silkscreen | AD7643BSTZ / ADI Logo |
| Number of Bits | 18 Bits |
| Sampling Rate | 1.25 MSPS (Mega Samples Per Second) |
| Architecture | SAR (Successive Approximation Register) |
| Input Type | Differential |
| Number of Channels | 1 Channel (Differential Input) |
| Internal Reference | 2.048 V On‑Chip Reference |
| Data Interface | Parallel, Serial (SPI / DSP Compatible) |
| Analog Supply Voltage | 2.375 V to 2.625 V (2.5 V Nominal) |
| Digital I/O Voltage | 2.375 V to 5.25 V |
| Operating Temperature Range | ‑40°C to +85°C |
Typical Applications
- Medical Imaging Systems (MRI, Ultrasound, ECG, Digital X‑Ray)
- High‑Precision Test and Measurement Instruments
- Automated Test Equipment (ATE) and Data Acquisition Systems (DAQ)
- Digital Signal Processing (DSP) and Communications Systems
- Spectrum Analysis, Radar, and Sonar Processing Electronics
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1‑2 business days |
| Delivery Time | 3‑7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: What resolution and sampling rate does AD7643BSTZ support?
A: 18‑bit resolution with 1.25 MSPS throughput, zero pipeline latency for real‑time signal acquisition.
Q2: What input type does AD7643BSTZ use?
A: Fully differential analog input, providing good common‑mode noise rejection.
Q3: Does AD7643BSTZ include internal voltage reference?
A: Yes, it integrates a 2.048 V on‑chip reference and also supports external reference input.
Q4: What is the difference between AD7643BSTZ and AD7643ASTZ?
A: Identical electrical specs and 48‑LQFP package. BSTZ is industrial grade ‑40℃~+85℃; ASTZ is commercial grade 0℃~+70℃. Not direct cross‑replace without temperature evaluation.
Q5: Difference between AD7643BSTZ and AD7643BSTZRL?
A: Same silicon chip. BSTZ is tray packaging; BSTZRL is tape‑and‑reel for SMT mass assembly.
Q6: Are there alternative ADC parts for AD7643BSTZ?
A: AD7641 is a lower‑speed 18‑bit PulSAR alternative. No pin‑to‑pin compatible replacement; circuit and firmware modification are required.
Q7: What digital interfaces are available?
A: Parallel bus and SPI‑compatible serial interface, works with FPGA, MCU and DSP.
Q8: Any power‑up sequence note for AD7643BSTZ?
A: Analog supply is 2.5 V nominal, digital I/O supports 2.375‑5.25 V. Follow the datasheet power‑on sequence to avoid chip malfunction or damage.
Q9: How to get datasheet and bulk quotation?
A: Submit the inquiry form for datasheet, application notes, stock check and volume pricing.
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