My Inquiry
My Account
Analog Devices Inc. AD7622BSTZ
- Part No.:
- AD7622BSTZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
AD7622BSTZ.pdf
- Description:
- IC ADC 16BIT SAR 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,379
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD7622BSTZ from Analog Devices is a 16-bit, 2 MSPS, fully differential, charge redistribution SAR analog-to-digital converter with ±1.5 LSB INL max, 92.5 dB typical dynamic range, and single 2.5 V supply operation - designed for high-speed, high-accuracy data acquisition in medical instruments and spectrum analysis systems.
For engineers reviewing the AD7622BSTZ datasheet, AD7622BSTZ pinout, AD7622BSTZ application, or AD7622BSTZ equivalent, key selection considerations include its warp/normal mode throughput flexibility (2 MSPS / 1.5 MSPS), internal 2.048 V reference with 8 ppm/°C drift, SPI/QSPI/MICROWIRE-compatible serial interface, and 48-lead LFCSP package with validated differential input support up to ±2.5 V.
Technical Context
The AD7622BSTZ implements a true differential, no-pipeline-delay SAR architecture with hardware factory calibration for AC parameters (SNR, THD) and DC linearity. It integrates an internal conversion clock, error correction circuitry, and dual parallel/serial interfaces - enabling deterministic timing control via CNVST-triggered sampling and BUSY-driven data latching.
Its functional block includes a switched-capacitor DAC, REF/REFBUFIN dual-reference path (internal 2.048 V or external 1.8–2.5 V), temperature sensor output (278 mV @ 25°C), and configurable digital interface modes (SER/PAR, BYTESWAP, OB/2C) supporting 16-bit straight binary or twos-complement outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full-scale code coverage for precision measurement applications. |
| Throughput Rate | 2 MSPS in wideband warp/warp mode; 1.5 MSPS in normal mode - enables real-time capture of fast transients without pipeline latency. |
| INL | ±1.5 LSB maximum (±23 ppm of FSR) - ensures end-point linearity critical for calibration-sensitive instrumentation. |
| SINAD | 91 dB minimum @ 20 kHz (VREF = 2.5 V) - supports high-fidelity signal reconstruction in DSP and communications receivers. |
| Dynamic Range | 92.5 dB typical - delivers >15 effective bits for low-noise, wide-dynamic-range acquisition in medical imaging front-ends. |
| Reference | Internal 2.048 V ±8 ppm/°C drift - eliminates external reference component count while maintaining thermal stability over −40°C to +85°C. |
| Power Dissipation | 70 mW typical @ 2 MSPS with internal REF; 2 μW in power-down - enables low-power portable or battery-backed DAQ systems. |
Pinout & Package
AD7622BSTZ is housed in a Pb-free, 48-lead LFCSP (Lead Frame Chip Scale Package) with exposed paddle, optimized for thermal performance and high-density PCB layouts. Pin mapping follows standard Analog Devices PulSAR ADC layout conventions and is pin-compatible with AD7621/AD7623 in same 48-lead footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN− | Differential analog inputs | Accepts fully differential ±VREF input (up to ±2.5 V); requires matched trace routing and common-mode rejection for optimal INL/SINAD. |
| CNVST | Conversion start trigger | Falling-edge sensitive; initiates sample-and-hold hold phase and conversion - enables precise synchronous sampling across multi-channel systems. |
| BUSY | Conversion status indicator | Active-high open-drain output; falling edge signals valid data ready - used as hardware handshake for DMA or FPGA read timing. |
| REF, REFGND | Reference voltage source/sink | REF outputs 2.048 V when PDREF/PDBUF = low; REFGND must be isolated from AGND/DGND to minimize reference noise coupling. |
| SER/PAR, D[0:15], RD, CS | Dual-mode digital interface | Selects parallel (16-bit bus) or serial (SPI/QSPI) operation; RD/CS enable output drivers - supports flexible host processor integration (ARM, FPGA, DSP). |
| TEMP | On-chip temperature sensor | Analog output at 278 mV @ 25°C, 1 mV/°C slope - provides die temperature monitoring without external sensors for thermal derating or calibration compensation. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | SAR architecture delivers immediate conversion result availability - eliminates latency-induced phase errors in closed-loop control or real-time feedback systems. |
| Hardware-calibrated AC performance | Factory-tested SNR, THD, and SFDR ensure guaranteed 91 dB SINAD and −115 dB THD @ 20 kHz - reduces system-level validation effort for ATE and medical certification. |
| Dual reference configuration | Supports internal 2.048 V REF or external 1.8–2.5 V REF with buffer bypass - allows trade-off between BOM simplicity and ultra-low-noise external reference integration. |
| Three conversion speed modes | Wideband warp (2 MSPS), warp (2 MSPS), and normal (1.5 MSPS) - enables dynamic throughput scaling based on signal bandwidth and accuracy requirements. |
| Integrated temperature sensor | Monitors die temperature with ±2°C accuracy over −40°C to +85°C - enables on-the-fly gain/offset correction in high-stability instrumentation. |
Applications
| Medical Imaging Front-End | Spectrum Analyzer Digitizer |
|---|---|
Use Scenario: High-resolution digitization of ultrasound echo signals or MRI gradient waveforms requiring >90 dB SNR and sub-LSB linearity. IC Role / Device Role / Timing Role: Primary ADC capturing differential analog inputs at up to 2 MSPS with deterministic BUSY-driven readout timing. Use Value: 92.5 dB dynamic range and ±1.5 LSB INL ensure accurate representation of weak tissue echoes amid strong near-field reflections. |
Use Scenario: Real-time RF signal capture in benchtop or field-deployable spectrum analyzers operating up to 50 MHz input bandwidth. IC Role / Device Role / Timing Role: Wideband warp mode ADC interfacing directly to RF demodulator outputs with SPI-controlled data streaming. Use Value: −115 dB THD and 117 dB SFDR preserve spectral purity during FFT-based frequency analysis of narrowband signals. |
| Automated Test Equipment (ATE) | Digital Signal Processing Acquisition |
Use Scenario: Multi-channel parametric testing of ICs and passive components using synchronized high-speed sampling across 16-bit channels. IC Role / Device Role / Timing Role: Precision ADC with CNVST-synchronized sampling and parallel/serial interface flexibility for FPGA-based test controller integration. Use Value: Pin compatibility with AD7621/AD7623 simplifies board reuse across different speed/accuracy tiers in modular ATE platforms. |
Use Scenario: High-fidelity audio or vibration signal acquisition feeding into TI C6000 or Xilinx Zynq-based DSP pipelines. IC Role / Device Role / Timing Role: Low-latency SAR ADC providing 16-bit samples with no pipeline delay to avoid FIR filter group delay mismatches. Use Value: 2 μW power-down mode enables rapid channel cycling in multi-sensor arrays without thermal drift penalties. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, high-accuracy SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7621BSTZ | 16-bit, 2.5 MSPS, ±1.5 LSB INL, identical 48-lead LFCSP package and pinout - but lacks internal temperature sensor and has higher 100 μA REF current drain. | Preferred where maximum throughput (2.5 MSPS) outweighs need for on-die thermal monitoring or lowest REF power. | Select AD7621BSTZ only if system requires >2 MSPS and can accommodate external temperature compensation. |
| AD7623BSTZ | 16-bit, 2 MSPS, ±1.5 LSB INL, same package and pinout - features improved 93 dB dynamic range and lower 1.25 LSB DNL, but requires external reference. | Suited for applications demanding highest SFDR (119 dB) and lowest distortion where external low-noise reference is already present. | Choose AD7623BSTZ when reference noise floor dominates system SNR and external REF design is mature. |
Compared with AD7622BSTZ, AD7621BSTZ offers higher speed but omits integrated temperature sensing, while AD7623BSTZ trades internal reference convenience for superior AC performance - making AD7622BSTZ the balanced choice for cost-sensitive, thermally aware, self-contained high-accuracy DAQ designs.
Availability
AD7622BSTZ is available at Aetrix Electronics and suitable for medical instrumentation, automated test equipment, and high-speed digital signal processing applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AD7622BSTZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with R&D and manufacturing operations worldwide.
The AD7622BSTZ belongs to Analog Devices' PulSAR® family of precision SAR ADCs - engineered specifically for high-throughput, low-latency, high-linearity data acquisition in instrumentation, medical, and communications infrastructure.
FAQ
What is the maximum sampling rate supported by the AD7622BSTZ?
The AD7622BSTZ supports up to 2 MSPS in wideband warp and warp modes, and 1.5 MSPS in normal mode. These rates are achievable with full specified accuracy only when minimum conversion intervals are observed per mode - for example, ≥500 ns between conversions in warp mode. The AD7622BSTZ achieves this without pipeline delay due to its SAR architecture, making it suitable for time-critical acquisition tasks where latency matters.
Does the AD7622BSTZ require an external reference voltage?
No, the AD7622BSTZ includes an internal 2.048 V reference with ±8 ppm/°C drift and built-in buffer, eliminating the need for external reference components in most applications. However, it also supports external references from 1.8 V to 2.5 V via the REF pin when higher precision or lower noise is required - configured by setting PDREF and PDBUF high. The AD7622BSTZ maintains full specification compliance in both configurations.
How does the BUSY pin function in the AD7622BSTZ interface?
The BUSY pin on the AD7622BSTZ is an active-high, open-drain digital output that transitions high at CNVST falling edge and remains high until conversion completes and data is latched into the output register. Its falling edge serves as a precise hardware-ready signal for parallel or serial read operations - enabling zero-wait-state data capture in FPGA or microcontroller interfaces. This behavior is consistent across all AD7622BSTZ interface modes.
Can the AD7622BSTZ operate with a 3.3 V digital interface supply?
Yes, the AD7622BSTZ supports OVDD from 2.3 V to 3.6 V, allowing direct connection to 3.3 V logic families without level shifters. Its digital I/O pins (RD, CS, D[0:15], etc.) are specified for VIH up to 5.25 V and VIL down to −0.3 V, ensuring robust interoperability with 3.3 V or 2.5 V host processors. The AD7622BSTZ maintains full timing compliance and drive strength across this OVDD range.
What is the purpose of the TEMP pin on the AD7622BSTZ?
The TEMP pin on the AD7622BSTZ provides an analog voltage output proportional to die temperature: 278 mV at 25°C with a nominal sensitivity of 1 mV/°C. It is internally connected to a calibrated bandgap sensor and requires no external excitation. This output enables real-time thermal monitoring for gain/offset drift compensation or thermal throttling - a feature not present in pin-compatible alternatives like AD7621BSTZ, making the AD7622BSTZ uniquely suited for thermally sensitive calibration workflows.
AD7622BSTZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PulSAR®
- Package/Case:
- 48-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 2M
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI, Parallel, DSP
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.37V ~ 2.63V
- Voltage - Supply, Digital:
- 2.37V ~ 2.63V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7622BSTZ FAQ
1.How can I place an order for AD7622BSTZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7622BSTZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD7622BSTZ reliable?
The price and inventory of AD7622BSTZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7622BSTZ is usually 5 days.
3.What payment methods are accepted for AD7622BSTZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7622BSTZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7622BSTZ?
AD7622BSTZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7622BSTZ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD7622BSTZ?
For technical support, including AD7622BSTZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7622BSTZ requirements.
6.How does Aetrix verify that AD7622BSTZ is sourced from the original manufacturer or authorized distributors?
All AD7622BSTZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD7622BSTZ meets industry standards.
7.What is the process for return or replacement of AD7622BSTZ?
All AD7622BSTZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7622BSTZ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD7622BSTZ part is unused and in its original packaging.
Return procedure for AD7622BSTZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD7622BSTZ Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
