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Analog Devices Inc. AD7952BSTZ
- Part No.:
- AD7952BSTZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
AD7952BSTZ.pdf
- Description:
- IC ADC 14BIT SAR 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,461
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Product details
Overview
AD7952BSTZ from Analog Devices is a 14-bit, 1 MSPS differential successive approximation register (SAR) ADC with programmable input ranges (±5 V, ±10 V, 0–5 V, 0–10 V), iCMOS® process technology, and dual parallel/serial (SPI-compatible) interface. It features no pipeline delay, internal 5 V reference (3 ppm/°C drift), and operates from −40°C to +85°C for high-speed data acquisition in precision instrumentation.
For engineers reviewing the AD7952BSTZ datasheet, AD7952BSTZ pinout, AD7952BSTZ application, or AD7952BSTZ equivalent, key selection considerations include its warp/normal/impulse mode throughput scaling (1 MSPS / 800 kSPS / 670 kSPS), differential input architecture with 75 dB CMRR at 100 kHz, 85 dB SNR at 2 kHz, and 48-lead LQFP/LFCSP package compatibility with industrial signal chain designs.
Technical Context
The AD7952BSTZ implements a charge redistribution SAR architecture with integrated conversion clock, error correction, and configurable analog front-end. Its hardware- or software-controlled input range selection (via BIPOLAR/TEN pins or serial configuration port) supports four differential voltage spans without external gain switching.
Three distinct sampling modes-warp (1 μs cycle), normal (1.25 μs), and impulse (1.49 μs)-enable dynamic power scaling from 235 mW at 1 MSPS down to 10 mW at 1 kSPS. The device uses separate analog (AVDD/AGND), digital (DVDD/DGND), and I/O (OVDD/OGND) supply domains with dedicated high-voltage rails (VCC = +15 V, VEE = −15 V) for full-scale bipolar input handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes - guarantees monotonicity and deterministic code transitions across full temperature range. |
| Throughput Rate | 1 MSPS (warp mode); enables real-time capture of signals up to 45 MHz −3 dB input bandwidth. |
| INL Error | ±1 LSB max (±61 ppm of FSR) - ensures accurate amplitude representation in closed-loop control and calibration systems. |
| SNR | 85 dB @ 2 kHz - supports >13.5 ENOB for high-fidelity spectral analysis and medical waveform digitization. |
| Reference Drift | ±3 ppm/°C (internal 5 V ref) - eliminates need for external ovenized reference in portable test equipment. |
| Power Dissipation | 235 mW @ 1 MSPS; drops to 10 mW @ 1 kSPS - allows thermal management in dense PCB layouts without forced air. |
| Aperture Jitter | 5 ps rms - limits sampling uncertainty to <0.03° phase error at 100 kHz input, critical for coherent sampling. |
Pinout & Package
AD7952BSTZ is available in two RoHS-compliant packages: 48-lead LQFP (7 mm × 7 mm) and 48-lead LFCSP (7 mm × 7 mm, exposed pad). Both share identical pinout and thermal performance per Analog Devices' datasheet Rev. A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CNVST | Conversion Start Trigger | Falling-edge–sensitive input that initiates sample-and-hold hold phase and starts SAR conversion sequence. |
| BUSY | Conversion Status Flag | Active-high open-drain output indicating conversion in progress; falling edge signals data readiness for readback. |
| IN+, IN− | Differential Analog Inputs | High-impedance, fully differential inputs supporting ±10 V span; require matched 180° out-of-phase drive for optimal CMRR. |
| REF | Reference Input/Output | Configurable as 5 V internal reference output (PDREF/PDBUF = low) or external reference input (up to AVDD). |
| SER/PAR | Interface Mode Select | Low = parallel 14-bit bus; high = serial SPI/QSPI/MICROWIRE-compatible interface using shared D[13:0] pins. |
| WARP, IMPULSE, TEN, BIPOLAR | Hardware Configuration Inputs | Set input range (0–5 V, 0–10 V, ±5 V, ±10 V) and sampling mode (warp/normal/impulse) without serial communication. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Input Ranges | Four differential spans (±10 V, ±5 V, 0–10 V, 0–5 V) selectable via hardware pins or serial register - eliminates external level-shifting circuitry. |
| No Pipeline Delay | SAR architecture delivers first valid conversion result immediately after BUSY falls - essential for deterministic latency in real-time control loops. |
| Multi-Supply Domain Isolation | Separate AVDD/AGND (analog), DVDD/DGND (core logic), OVDD/OGND (I/O), and VCC/VEE (high-voltage analog) rails - prevents digital noise coupling into sensitive analog paths. |
| Internal Reference w/ TEMP Output | 5 V reference with ±3 ppm/°C drift and on-chip temperature sensor (311 mV @ 25°C, 1 mV/°C) - enables self-calibration and ambient compensation without external sensors. |
| Power-Down Scalability | 10 μW standby current and dynamic power scaling across three throughput modes - extends battery life in portable ATE and field instruments. |
Applications
| Process Control Systems | Medical Instrumentation |
|---|---|
Use Scenario: High-accuracy monitoring of pressure, flow, and temperature transducers in PLC-based industrial automation. IC Role / Device Role / Timing Role: Primary ADC capturing synchronized multi-channel sensor data at ≥500 kSPS with <±1 LSB INL for PID loop fidelity. Use Value: Hardware-configurable input ranges eliminate rework when interfacing diverse 4–20 mA, ±10 V, or thermocouple signal conditioners. | Use Scenario: Digitizing ECG, EEG, and ultrasound beamformer signals requiring low noise and precise amplitude linearity. IC Role / Device Role / Timing Role: Front-end SAR ADC providing 85 dB SNR and 75 dB CMRR to reject 50/60 Hz mains interference in patient-connected devices. Use Value: No pipeline delay enables immediate post-conversion processing for real-time arrhythmia detection and adaptive filtering. |
| Digital Signal Processing | Automated Test Equipment |
Use Scenario: Capturing wideband IF signals in software-defined radio receivers and spectrum analyzers. IC Role / Device Role / Timing Role: High-speed differential ADC feeding FPGA-based FFT engines with 45 MHz analog input bandwidth. Use Value: Warp mode 1 MSPS throughput sustains >10× oversampling for high-resolution spectral estimation without decimation bottlenecks. | Use Scenario: Precision DC parametric testing of ICs and passive components in production ATE platforms. IC Role / Device Role / Timing Role: Calibration-grade ADC measuring voltage/current with ±1 LSB INL and traceable 5 V internal reference. Use Value: Internal reference drift <3 ppm/°C reduces recalibration frequency and improves test repeatability across environmental chambers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7960BCPZ | 18-bit, 5 MSPS, same 48-lead LFCSP package; requires external reference; higher power (43 mW @ 5 MSPS). | Better resolution for metrology; lacks hardware-configurable input ranges and internal reference. | Choose AD7960BCPZ when 18-bit resolution and >1 MSPS throughput outweigh need for integrated reference and flexible range selection. |
| ADS8860IDRCT | 16-bit, 1 MSPS, single-ended input only; SPI-only interface; lower power (11 mW @ 1 MSPS); no internal reference. | Cost-sensitive, space-constrained designs where differential input and hardware configuration are not required. | Choose ADS8860IDRCT for compact, low-power applications accepting single-ended inputs and external reference dependency. |
Compared with AD7952BSTZ, AD7960BCPZ trades integrated reference and input flexibility for higher resolution and speed, while ADS8860IDRCT sacrifices differential capability and configurability to reduce size and power-making AD7952BSTZ the balanced choice for industrial and medical systems needing robust, self-contained signal acquisition.
Availability
AD7952BSTZ is available at Aetrix Electronics and suitable for process control systems, medical instrumentation, and automated test equipment requiring stable component supply, long-term lifecycle support, and guaranteed authentic sourcing from Analog Devices.
Supply support for AD7952BSTZ 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 design centers worldwide and ISO 9001-certified manufacturing.
The AD7952BSTZ belongs to Analog Devices' PulSAR® family of precision SAR ADCs, engineered specifically for high-speed, low-latency, and low-noise data acquisition in industrial, medical, and test equipment where accuracy, reliability, and configurability are critical.
FAQ
What input voltage ranges does the AD7952BSTZ support, and how are they selected?
The AD7952BSTZ supports four differential input ranges: 0 V to 5 V, 0 V to 10 V, ±5 V, and ±10 V. Selection is achieved either through hardware pins (BIPOLAR and TEN) or via the serial configuration port. In hardware mode, BIPOLAR and TEN logic levels directly determine the range per Table 1 in the datasheet; in software mode, the same ranges are programmed into the configuration register. This dual-mode flexibility allows seamless integration into both fixed-function and reconfigurable systems without redesigning the analog front-end.
Does the AD7952BSTZ require an external reference, or does it include an internal one?
The AD7952BSTZ includes a 5 V internal reference with ±3 ppm/°C temperature drift and 10 ms turn-on settling time (with 22 μF capacitor). When PDREF and PDBUF are driven low, the internal reference and buffer are enabled, and the REF pin outputs 5 V. Alternatively, with PDREF and PDBUF high, the device accepts an external reference between 4.75 V and AVDD + 0.1 V. This dual-reference capability makes AD7952BSTZ suitable for applications demanding either simplicity (internal ref) or ultimate accuracy (external ultra-low-drift ref).
What are the differences between warp, normal, and impulse modes in the AD7952BSTZ?
Warp mode achieves 1 MSPS throughput with 1 μs conversion cycle and is optimized for maximum speed. Normal mode delivers 800 kSPS with 1.25 μs cycle and supports asynchronous operation for flexible timing alignment. Impulse mode scales power with throughput at 670 kSPS (1.49 μs cycle), reducing dissipation to ~150 mW - ideal for battery-powered or thermally constrained applications. All modes retain full 14-bit performance and use the same CNVST-triggered sampling mechanism.
Can the AD7952BSTZ interface with both parallel and serial host processors?
Yes, the AD7952BSTZ supports both parallel and serial interfaces via the SER/PAR pin. When SER/PAR = low, it operates in parallel mode with 14-bit data output on D[13:0], controlled by RD, CS, and BUSY. When SER/PAR = high, it switches to serial mode compatible with SPI, QSPI, MICROWIRE, and DSP interfaces - using SDOUT, SDCLK, SYNC, and SCIN/SCCLK pins. The same physical pins (D[13:0]) serve dual roles, minimizing board footprint while maximizing system integration flexibility.
What package options are available for the AD7952BSTZ, and are they pin-compatible?
The AD7952BSTZ is offered in two mechanically and electrically identical 48-lead packages: LQFP (BSTZ suffix) and LFCSP (BCPZ suffix). Both share identical pinout, thermal characteristics, and electrical specifications per Analog Devices' datasheet Rev. A. The LFCSP variant includes an exposed pad connected to VEE for improved thermal performance, while the LQFP uses standard leadframe construction. Designers may select based on thermal requirements and assembly capabilities without modifying layout or firmware.
AD7952BSTZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iCMOS®, PulSAR®
- Package/Case:
- 48-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 1M
- 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:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7952BSTZ FAQ
1.How can I place an order for AD7952BSTZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7952BSTZ 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 AD7952BSTZ reliable?
The price and inventory of AD7952BSTZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7952BSTZ is usually 5 days.
3.What payment methods are accepted for AD7952BSTZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7952BSTZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7952BSTZ?
AD7952BSTZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7952BSTZ 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 AD7952BSTZ?
For technical support, including AD7952BSTZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7952BSTZ requirements.
6.How does Aetrix verify that AD7952BSTZ is sourced from the original manufacturer or authorized distributors?
All AD7952BSTZ 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 AD7952BSTZ meets industry standards.
7.What is the process for return or replacement of AD7952BSTZ?
All AD7952BSTZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7952BSTZ, 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 AD7952BSTZ part is unused and in its original packaging.
Return procedure for AD7952BSTZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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