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Analog Devices Inc. AD7676ACPRL
- Part No.:
- AD7676ACPRL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD7676ACPRL.pdf
- Description:
- IC ADC 16BIT DIFF INP 48LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,329
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Product details
Overview
AD7676ACPRL from Analog Devices is a 16-bit, 500 kSPS, fully differential successive-approximation register (SAR) ADC operating from a single 5 V supply. It delivers 1 LSB INL max, 94 dB SNR at 45 kHz, –110 dB THD, and supports true differential ±2.5 V input range with no pipeline delay. It is used in high-precision medical CT scanners and spectrum analyzers requiring low jitter and dc/ac accuracy.
For engineers reviewing the AD7676ACPRL datasheet, AD7676ACPRL pinout, AD7676ACPRL application, or AD7676ACPRL equivalent, this page provides verified technical context, real-world interface timing constraints, confirmed LFCSP-48 package mapping, and validated alternatives for precision data acquisition systems.
Technical Context
The AD7676ACPRL implements a charge redistribution SAR architecture with on-chip track-and-hold, internal conversion clock, and factory-calibrated error correction circuitry. Its differential input stage achieves 79 dB CMRR at 10 kHz and supports both straight binary and twos complement output coding via OB/2C control.
It operates in three interface modes: parallel (8-/16-bit), serial master read after convert, and serial slave - all compatible with 3 V or 5 V logic. The BUSY signal provides precise data-ready indication with 10 ns end-of-conversion delay, and CNVST falling-edge triggering enables sub-5 ps aperture jitter performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full-scale fidelity for precision measurement. |
| Throughput Rate | 500 kSPS (2 µs conversion cycle) - enables real-time capture of fast transients in instrumentation and medical imaging. |
| INL | ±1 LSB max (0.0015% FS) - ensures linearity-critical applications like CT scanner calibration remain within 12-bit+ effective accuracy. |
| S/(N+D) | 94 dB typical at 45 kHz - supports >15.3 ENOB for high-fidelity spectral analysis up to Nyquist frequency. |
| Power Dissipation | 67 mW at 500 kSPS; 7 µW in power-down - enables battery-powered portable diagnostics without thermal derating. |
| Analog Input Range | True differential ±2.5 V - rejects common-mode noise in noisy industrial sensor front-ends while preserving dynamic range. |
| Reference Support | External 2.3–2.5 V reference (170 µA max draw) - allows use of ultra-low-noise ADR421 or similar for <1 µV RMS noise floor. |
Pinout & Package
AD7676ACPRL is housed in a 48-lead LFCSP (Lead Frame Chip Scale Package) with 0.5 mm pitch, exposed paddle for thermal dissipation, and operation specified from –40°C to +85°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN– | Differential analog inputs | Accept true differential ±2.5 V signals; reject common-mode noise up to 79 dB at 10 kHz. |
| REF, REFGND | External reference interface | Supports 2.3–2.5 V external reference; draws ≤170 µA at full throughput for stable scaling. |
| CNVST | Conversion start trigger | Falling-edge sensitive; initiates sample-and-hold hold phase with 2 ns aperture delay and 5 ps rms jitter. |
| BUSY | Conversion status indicator | Active-high during conversion; falling edge marks valid data latch - usable as hardware data-ready strobe. |
| SER/PAR | Interface mode select | LOW = parallel (D[15:0]); HIGH = serial (SDOUT/SCLK/SYNC) - enables flexible host integration. |
| OB/2C | Output coding control | HIGH = straight binary; LOW = twos complement - simplifies DSP alignment and signed math in firmware. |
| PD | Power-down enable | Logic HIGH disables conversion and reduces current to ≤7 µW - critical for duty-cycled battery systems. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Immediate data availability after BUSY falls - eliminates latency-induced phase errors in closed-loop control. |
| Single 5 V supply operation | AVDD = DVDD = 5 V ±5%; OVDD = 2.7–5.25 V - eliminates dual-rail design complexity and reduces BOM count. |
| Pin-to-pin compatibility with AD7675 | Same LFCSP-48 footprint and signal mapping - enables drop-in upgrade path for higher-speed designs. |
| Flexible serial interface | Supports SPI/QSPI/MICROWIRE/DSP protocols with programmable SCLK division and SYNC polarity inversion. |
| Factory-calibrated ac/dc performance | Guaranteed 92 dB SNR, 110 dB SFDR, and ±1 LSB INL - removes need for system-level linearity correction. |
Applications
| CT Scanners | Spectrum Analysis |
|---|---|
Use Scenario: Digitizing X-ray detector outputs in multi-slice computed tomography systems with strict SNR and linearity requirements. IC Role / Device Role / Timing Role: Primary high-speed, high-linearity ADC capturing differential detector signals at 500 kSPS with sub-ns timing precision. Use Value: 94 dB SNR and ±1 LSB INL ensure accurate Hounsfield unit calculation and artifact-free image reconstruction. |
Use Scenario: Capturing RF baseband I/Q signals in real-time spectrum analyzers for EMI compliance testing. IC Role / Device Role / Timing Role: High-fidelity sampling front-end with true differential input rejecting board-level common-mode noise. Use Value: 110 dB SFDR and –110 dB THD preserve weak signal integrity amid strong interferers up to Nyquist. |
| Medical Instruments | Process Control |
Use Scenario: High-accuracy vital sign monitoring in portable ultrasound and EEG devices requiring low power and dc stability. IC Role / Device Role / Timing Role: Low-power 16-bit ADC interfacing with analog sensor front-ends and 3 V microcontrollers via serial mode. Use Value: 7 µW power-down current and 15 µW @ 100 SPS extend battery life while maintaining 16-bit resolution. |
Use Scenario: Precision analog input module in PLCs measuring strain gauges, RTDs, and pressure transducers in harsh industrial environments. IC Role / Device Role / Timing Role: Isolated, differential ADC with robust CMRR and wide temperature range (–40°C to +85°C). Use Value: 79 dB CMRR at 10 kHz and ±1 LSB INL ensure stable readings despite motor drive noise and ground shifts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7675ACPRL | Same LFCSP-48 package and pinout; 250 kSPS max throughput; 92 dB SNR typical; 1 LSB INL. | Limited to lower-speed applications where 500 kSPS is not required; suitable for cost-sensitive medical sensors. | Select AD7675ACPRL when throughput budget allows relaxation to 250 kSPS and system SNR margin is ≥2 dB lower. |
| ADS8860IRGET | 16-bit, 1 MSPS SAR ADC; 93 dB SNR; 1.25 LSB INL; SPI-only interface; 20-pin VQFN; 3 V supply only. | Requires level-shifting for 5 V systems; lacks parallel interface and true differential input - uses pseudo-differential topology. | Choose ADS8860IRGET only for compact, 3 V–only designs where space is constrained and differential rejection is less critical. |
Compared with AD7675ACPRL and ADS8860IRGET, the AD7676ACPRL uniquely combines 500 kSPS throughput, true differential input, 5 V single-supply operation, and parallel/serial flexibility - making it optimal for upgrade paths in existing AD7675-based systems and new high-SNR instrumentation.
Availability
AD7676ACPRL is available at Aetrix Electronics and suitable for CT scanners, spectrum analyzers, medical instruments, and process control systems requiring stable component supply across long production lifecycles.
Supply support for AD7676ACPRL 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial, and medical markets since 1965.
The AD7676ACPRL belongs to Analog Devices' PulSAR® family of precision SAR ADCs, designed specifically for applications demanding both high speed and high dc/ac accuracy without pipeline latency.
FAQ
What is the maximum sampling rate supported by the AD7676ACPRL?
The AD7676ACPRL supports a maximum throughput rate of 500 kSPS, corresponding to a minimum conversion cycle time of 2 µs. This is guaranteed over the full –40°C to +85°C temperature range with AVDD = DVDD = 5 V and OVDD between 2.7 V and 5.25 V. At this rate, the AD7676ACPRL maintains its specified 1 LSB INL and 94 dB SNR performance.
Does the AD7676ACPRL require an external reference voltage?
Yes, the AD7676ACPRL requires an external reference voltage applied to the REF pin, with a nominal value of 2.5 V and a valid range of 2.3 V to 2.5 V. The device draws up to 170 µA from the reference source at 500 kSPS. Recommended references include the ADR421 (2.5 V, low noise) or ADR431, both of which meet the AD7676ACPRL's accuracy and drive requirements.
Can the AD7676ACPRL operate with a 3 V digital interface while using a 5 V analog supply?
Yes, the AD7676ACPRL supports mixed-voltage operation: AVDD and DVDD are supplied at 5 V for analog and core digital logic, while OVDD can be set to 3 V to interface directly with 3 V microcontrollers or FPGAs. The digital I/Os (RD, CS, D[15:0], etc.) are fully compliant with 3 V logic levels when OVDD = 3 V, eliminating the need for level shifters.
What package type does the AD7676ACPRL use, and is it RoHS-compliant?
The AD7676ACPRL uses a 48-lead LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad, designated CP-48 in Analog Devices' ordering guide. It is RoHS-compliant and halogen-free, qualified per JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3), and rated for operation from –40°C to +85°C ambient temperature.
How does the AD7676ACPRL handle power-down mode, and what is its quiescent current?
The AD7676ACPRL enters power-down mode when the PD pin is driven HIGH. In this state, conversion is inhibited and total supply current drops to ≤7 µW (microwatts), measured across AVDD, DVDD, and OVDD. Recovery time from power-down to first valid conversion is less than 1 µs, enabling rapid duty-cycled operation in battery-powered AD7676ACPRL systems.
AD7676ACPRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PulSAR®
- Package/Case:
- 48-VFQFN Exposed Pad, CSP
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 500k
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- -
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-LFCSP-VQ (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7676ACPRL FAQ
1.How can I place an order for AD7676ACPRL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7676ACPRL 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 AD7676ACPRL reliable?
The price and inventory of AD7676ACPRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7676ACPRL is usually 5 days.
3.What payment methods are accepted for AD7676ACPRL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7676ACPRL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7676ACPRL?
AD7676ACPRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7676ACPRL 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 AD7676ACPRL?
For technical support, including AD7676ACPRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7676ACPRL requirements.
6.How does Aetrix verify that AD7676ACPRL is sourced from the original manufacturer or authorized distributors?
All AD7676ACPRL 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 AD7676ACPRL meets industry standards.
7.What is the process for return or replacement of AD7676ACPRL?
All AD7676ACPRL units undergo pre-shipment inspection (PSI). If there is an issue with AD7676ACPRL, 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 AD7676ACPRL part is unused and in its original packaging.
Return procedure for AD7676ACPRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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