My Inquiry
My Account
Analog Devices Inc. AD976AARSZRL
- Part No.:
- AD976AARSZRL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
AD976AARSZRL.pdf
- Description:
- IC ADC 16BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,333
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD976AARSZRL from Analog Devices is a 16-bit, 200 kSPS BiCMOS successive-approximation analog-to-digital converter (ADC) with ±10 V input range, internal 2.5 V reference, on-chip clock, and high-speed parallel interface. It operates from a single 5 V supply, dissipates ≤100 mW, and delivers 83 dB signal-to-(noise + distortion) at 45 kHz input - suited for precision data acquisition in industrial instrumentation and automated test equipment.
For engineers reviewing the AD976AARSZRL datasheet, AD976AARSZRL pinout, AD976AARSZRL application, or AD976AARSZRL equivalent, this page provides verified technical context, real-world timing behavior, package-specific layout guidance, and validated alternative options for ±10 V, 200 kSPS ADC replacement scenarios.
Technical Context
The AD976AARSZRL uses a switched-capacitor SAR architecture with laser-trimmed scaling resistors and factory-stored calibration coefficients stored in thin-film ROM to correct capacitor mismatch and offset errors. Its analog front-end includes ±25 V overvoltage protection and dual analog grounds (AGND1 for REF/VIN reference, AGND2 for CAP).
Conversion is controlled via R/C and CS signals with two timing modes: R/C-triggered (CS tied low) or CS-triggered (R/C held high), supporting bus-read synchronization using BUSY's rising edge. The BYTE pin enables full 16-bit or byte-swapped 8+8-bit parallel output formatting on D0–D15 pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 305 µV LSB step size across ±10 V full-scale range |
| Throughput Rate | 200 kSPS - completes conversion in 4.0–4.0 µs (typ/max), enabling real-time sampling of up to 45 kHz sinusoidal inputs |
| Analog Input Range | ±10 V - compatible with standard industrial sensor outputs without external level-shifting |
| S/(N+D) | 83 dB at 45 kHz - corresponds to ~14-bit effective resolution (ENOB), sufficient for high-fidelity waveform capture |
| Reference | Internal 2.5 V ±20 mV - eliminates need for external reference IC; supports external 2.3–2.7 V reference override |
| Power Dissipation | 100 mW max - enables operation in thermally constrained embedded systems with single 5 V rail |
| Package | 28-lead SSOP (RS-28) - 5.6 mm × 10.2 mm footprint, compatible with automated SMT assembly |
Pinout & Package
AD976AARSZRL is housed in a 28-lead Shrink Small Outline Package (SSOP, RS-28), pin-compatible with other AD976/AD976A variants in SOIC and DIP packages. The SSOP variant offers reduced board area and improved thermal resistance vs. PDIP, while maintaining identical pin functions and electrical behavior.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Analog input | ±10 V bipolar input node; requires 200 Ω series resistor per datasheet Figure 6 for optimal linearity |
| REF | Reference I/O | Provides internal 2.5 V reference; accepts external 2.3–2.7 V reference; must be decoupled to AGND1 with 2.2 µF tantalum |
| CAP | Reference buffer output | Stabilizes internal reference; requires 2.2 µF tantalum capacitor to AGND2 |
| D0–D15 | Parallel data outputs | Binary two's complement format; high-impedance when CS = HIGH or R/C = LOW; BYTE controls MSB/LSB byte ordering |
| R/C | Read/Convert control | Falling edge initiates conversion (with CS LOW); rising edge enables data output; minimum pulse width 50 ns |
| CS | Chip select | OR'd with R/C; falling edge triggers conversion or data enable depending on R/C state; enables multi-device bus sharing |
| BUSY | Status output | Active-low open-drain signal; goes low at conversion start, rises at data latch completion - used as read-strobe timing reference |
| AGND1 / AGND2 | Analog ground returns | AGND1 references VIN/REF; AGND2 references CAP; must be separated and joined at single point to avoid ground loops |
| VDIG / VANA | Digital/analog supplies | Both require 4.75–5.25 V; VANA powers analog core, VDIG powers digital interface; separate bypassing recommended |
Key Features
| Feature | Design Value |
|---|---|
| Factory-calibrated SAR architecture | Eliminates need for user calibration; achieves ±3 LSB integral nonlinearity (INL) and guaranteed no missing codes across temperature |
| Integrated 2.5 V reference + on-chip clock | Reduces BOM count by two components; reference drift ≤7 ppm/°C ensures stable full-scale accuracy over –40°C to +85°C |
| ±25 V analog input overvoltage protection | Prevents latch-up or damage during transient events in industrial environments without external clamping diodes |
| Byte-selectable parallel interface | Supports both full 16-bit reads and 8-bit microcontroller bus access via BYTE pin, simplifying firmware integration |
| Transient response <1 µs | Recovers to 16-bit accuracy within 1 µs after full-scale step - critical for closed-loop control and burst-mode sampling |
Applications
| Industrial Data Acquisition | Automated Test Equipment (ATE) |
|---|---|
Use Scenario: High-accuracy voltage monitoring of motor drive feedback signals in PLC-based control cabinets. IC Role / Device Role / Timing Role: Primary ADC capturing ±10 V analog sensor outputs at 200 kSPS for real-time position/speed calculation. Use Value: 83 dB S/(N+D) and <1 µs transient response ensure minimal quantization error and fast settling in dynamic load conditions. |
Use Scenario: Digitizing calibrated reference waveforms during functional testing of mixed-signal PCBs. IC Role / Device Role / Timing Role: Precision digitizer synchronized to system clock via BUSY rising edge for deterministic sample alignment. Use Value: Internal 2.5 V reference stability (±20 mV) and ±3 LSB INL enable traceable measurement uncertainty below 0.1% FS. |
| Medical Instrumentation | Scientific Signal Analysis |
Use Scenario: Capturing low-noise biopotential signals (e.g., ECG, EEG) amplified to ±10 V range prior to DSP processing. IC Role / Device Role / Timing Role: Front-end ADC interfacing directly to 16-bit microcontroller parallel bus via BYTE-controlled 8-bit reads. Use Value: 22 pF input capacitance and 13 kΩ impedance minimize loading on high-Z amplifier stages, preserving signal integrity. |
Use Scenario: Sampling spectral content of RF downconverted IF signals in spectrum analyzers or communications receivers. IC Role / Device Role / Timing Role: Medium-speed digitizer capturing 45 kHz bandwidth signals with 83 dB SFDR for harmonic analysis. Use Value: Spurious-free dynamic range of 90 dB ensures clean fundamental detection without masking adjacent low-level tones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit, medium-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD974ARZ | 14-bit, 1 MSPS, 3.3 V supply, SPI interface only - no parallel bus or internal reference | Higher speed but lower resolution; requires external reference and level-shifting for ±10 V inputs | Select when throughput >200 kSPS is required and resolution ≥14 bits suffices; not drop-in for AD976AARSZRL's parallel interface or ±10 V direct input |
| ADS8860IDRCT | 16-bit, 1 MSPS, SAR, 2.5–5 V supply, SPI interface, no internal reference, 100 kSPS min sampling rate | Higher speed, lower power (2.5 mW), but lacks ±10 V input support and requires external reference and driver op-amp | Choose for battery-powered portable instruments where SPI compatibility and ultra-low power outweigh need for ±10 V direct interface |
Compared with AD976AARSZRL, AD974ARZ trades resolution and ±10 V capability for speed and serial interface simplicity, while ADS8860IDRCT offers higher throughput and lower power but demands full external signal conditioning - neither matches AD976AARSZRL's integrated ±10 V, parallel, self-contained ADC functionality.
Availability
AD976AARSZRL is available at Aetrix Electronics and suitable for industrial data acquisition, automated test equipment, and medical instrumentation requiring stable component supply, long-term lifecycle support, and RoHS-compliant SSOP packaging.
Supply support for AD976AARSZRL 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 Wilmington, MA.
The AD976/AD976A product line was designed for precision, medium-speed data acquisition systems requiring factory-calibrated 16-bit accuracy, ±10 V input compatibility, and minimal external component count in industrial and test environments.
FAQ
What is the maximum sampling frequency supported by the AD976AARSZRL?
The AD976AARSZRL supports a maximum throughput rate of 200 kSPS, corresponding to a minimum conversion time of 4.0 µs (typical) and 4.0 µs (maximum). This is achieved using the internal clock and proper R/C or CS timing per Figures 2 and 3 in the datasheet. External clocking is not supported - timing is fully self-contained.
Does the AD976AARSZRL require external calibration for production use?
No, the AD976AARSZRL does not require external calibration for production use. It undergoes full factory calibration for offset, gain, and integral linearity errors, with correction coefficients stored in on-chip thin-film resistors. The typical INL is ±3 LSB and DNL is ±2 LSB across –40°C to +85°C, meeting specification without user adjustment.
Can the AD976AARSZRL operate with an external reference voltage?
Yes, the AD976AARSZRL can operate with an external reference voltage applied to the REF pin. The specified range is 2.3 V to 2.7 V for guaranteed linearity performance. When using an external reference, the internal 2.5 V reference is disabled, and the full-scale input becomes ±4 × VREF, e.g., ±10 V for 2.5 V reference or ±9.2 V for 2.3 V reference.
What is the purpose of the CAP pin on the AD976AARSZRL?
The CAP pin on the AD976AARSZRL is the output of the internal reference buffer and must be decoupled to AGND2 with a 2.2 µF tantalum capacitor. This capacitor stabilizes the reference voltage during conversion cycles and prevents noise coupling into the analog core. Omitting it degrades reference accuracy and increases full-scale error drift beyond the specified ±7 ppm/°C.
How does the BYTE pin affect data output formatting on the AD976AARSZRL?
The BYTE pin on the AD976AARSZRL controls parallel data bus organization: when BYTE = LOW, D15 (MSB) appears on Pin 6 and D0 (LSB) on Pin 22; when BYTE = HIGH, D15–D8 appear on Pins 15–22 and D7–D0 on Pins 6–13. This allows flexible interfacing with 8-bit microcontrollers or FPGAs that lack native 16-bit bus width, without external multiplexing logic.
AD976AARSZRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- 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:
- 28-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD976AARSZRL FAQ
1.How can I place an order for AD976AARSZRL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD976AARSZRL 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 AD976AARSZRL reliable?
The price and inventory of AD976AARSZRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD976AARSZRL is usually 5 days.
3.What payment methods are accepted for AD976AARSZRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD976AARSZRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD976AARSZRL?
AD976AARSZRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD976AARSZRL 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 AD976AARSZRL?
For technical support, including AD976AARSZRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD976AARSZRL requirements.
6.How does Aetrix verify that AD976AARSZRL is sourced from the original manufacturer or authorized distributors?
All AD976AARSZRL 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 AD976AARSZRL meets industry standards.
7.What is the process for return or replacement of AD976AARSZRL?
All AD976AARSZRL units undergo pre-shipment inspection (PSI). If there is an issue with AD976AARSZRL, 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 AD976AARSZRL part is unused and in its original packaging.
Return procedure for AD976AARSZRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD976AARSZRL 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…
