AD7623ACPZRL - 16-Bit, 1.33 MSPS PulSAR ADC | Analog Devices
MPN: AD7623ACPZRL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $32.5 | $32.50 |
| 10 | $29.25 | $292.50 |
| 100 | $26 | $2,600.00 |
| 500 | $23.4 | $11,700.00 |
| 1,000 | $20.8 | $20,800.00 |
AD7623ACPZRL Overview
A SAR ADC is a successive-approximation-register analog-to-digital converter; it belongs to the broader class of Nyquist-rate data converters that sample an analog signal at a defined clock rate and resolve each sample to a binary code through a binary-search charge-redistribution DAC. The PulSAR architecture is a specific ADI family of SAR converters known for low-noise, low-power, high-precision operation, sitting within the hierarchy ADC -> data converter -> mixed-signal IC -> semiconductor. SAR ADCs are preferred over delta-sigma for multi-channel multiplexed and event-driven systems because they provide deterministic latency and no pipeline delay.
Key features include a true 16-bit resolution with no missing codes, 1.33 MSPS throughput, low power consumption suitable for battery-powered industrial instruments, internal conversion clock, and a high-speed parallel or serial interface option. The fully differential input stage supports bipolar input ranges when biased around a common-mode voltage, and the wide input bandwidth preserves accuracy on fast transient signals.
Typical applications include industrial process control, medical instrumentation, precision data acquisition systems, spectrum analysis, and portable battery-powered measurement front-ends. The wide input bandwidth and deterministic latency also suit multiplexed multi-channel systems where channels must be sampled in known phase relationships.
When designing with the AD7623ACPZRL, select a low-noise, fast-settling driver amplifier such as the AD8021, as recommended in the AD7623 datasheet. Pay attention to PCB layout for the exposed pad - it must be soldered to a continuous ground plane to meet thermal and electrical performance, and decoupling should use ceramic capacitors placed as close as possible to the supply pins.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a faster path from component selection to validated PCB implementation.
Drop-in alternatives for AD7623ACPZRL — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with AD7623ACPZRL (same form factor and footprint) — differing in Architecture, Package, Sample Rate, Input Type, Operating Temperature Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD7623ACPZ
✅ Drop-In📋 Reference alternative (not in catalog)
AD7623ASTZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
AD7623ACPZRL Maximum Ratings & Electrical Characteristics
| Resolution | 16 bit |
| Sample Rate | 1.33 MSPS |
| Number of Inputs | 1 |
| Converter Type | SAR (successive approximation, PulSAR family) |
| Architecture | Charge redistribution, fully differential analog input |
| Supply Voltage | 2.5 V (single supply) |
| Input Type | Fully differential |
| Number of Pins / Terminals | 48 |
| Package | 48-LFCSP-VQ (7x7 mm) with exposed pad |
| Package Code (JEDEC) | QCCN (Leadless Chip Carrier, No Lead) |
| Package Shape | Square |
| Operating Temperature Range | -40C to +85C |
| Temperature Grade | Industrial |
| Mounting Type | Surface Mount |
| Terminal Form | No Lead |
| Datasheet Pages | 29 pages |
| RoHS Status | Compliant |
AD7623ACPZRL square Pin Configuration Guide
Pin configuration for AD7623ACPZRL (square package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for AD7623ACPZRL.
Refer to the datasheet for full pin configuration.
Typical Applications
AD7623ACPZRL is suitable for 6 applications: Industrial Process Control, Medical Instrumentation, Precision Data Acquisition Systems, Spectrum and Vibration Analysis, Portable Battery-Powered Measurement, Automated Test Equipment (ATE).
Industrial Process Control
The AD7623ACPZRL delivers 16-bit resolution at 1.33 MSPS, making it well-matched to multiplexed industrial process-control front-ends that digitize thermocouple, RTD, and 4-20 mA loop signals. Its fully differential input rejects common-mode noise from long cable runs typical of factory floors, and the 1.33 MSPS throughput lets a single ADC service several channels sequentially without aliasing. The single 2.5 V supply simplifies system power design, and the exposed-pad LFCSP-VQ package provides low thermal resistance for dense PLC and DCS analog modules. Pair it with the AD8021 driver and an ADR45xx reference for a complete industrial acquisition channel.
Recommended
Medical Instrumentation
Medical instruments such as patient monitors, infusion pumps, and electrochemistry analyzers demand 16-bit resolution with deterministic latency - exactly what the AD7623ACPZRL's SAR architecture provides. Unlike delta-sigma converters, the PulSAR family returns each conversion in a fixed number of clock cycles with no pipeline delay, so control loops and event-triggered measurements see a known response time. The fully differential input supports direct interface to biopotential front-ends and electrochemical sensors biased at the internal common-mode voltage. Combined with the AD8628 zero-drift amplifier and the ADR45xx reference, the AD7623ACPZRL forms the core of a portable or bedside diagnostic channel.
Recommended
Precision Data Acquisition Systems
PCI- and PXI-style data acquisition cards benefit from the AD7623ACPZRL's 1.33 MSPS sampling rate, which is high enough to digitize audio-bandwidth, vibration, and ultrasonic signals with 16-bit precision. The wide input bandwidth preserves transient fidelity, and the deterministic SAR latency makes it straightforward to correlate ADC samples with timestamps for synchronized multi-board systems. The exposed-pad LFCSP-VQ package is footprint-compatible with other PulSAR family members, allowing board designers to migrate between AD7623, AD7633, and AD7634 by simply swapping the part. Reference designs in the AD7623 datasheet demonstrate the full signal chain from sensor to digital output.
Recommended
Spectrum and Vibration Analysis
Spectrum and vibration analyzers need both wide analog input bandwidth and a flat noise floor to resolve small spectral features; the AD7623ACPZRL's wide input bandwidth and 16-bit dynamic range satisfy these requirements at audio and ultrasonic frequencies. The 1.33 MSPS Nyquist bandwidth covers signals up to ~660 kHz, suitable for many accelerometer and microphone-array applications. SAR architecture gives repeatable per-sample timing that simplifies FFT windowing and overlap processing. Reference the AD7623 datasheet's typical application circuit when laying out the analog front-end.
Recommended
Portable Battery-Powered Measurement
Portable field instruments - handheld oscilloscope probes, environmental loggers, and industrial multimeters - benefit from the AD7623ACPZRL's single 2.5 V supply and modest power consumption at 1.33 MSPS. The small 7x7 mm LFCSP-VQ package saves board area in handheld enclosures, and the exposed pad provides a thermal path when the device operates continuously near full speed. Because SAR ADCs do not require the continuous oversampling of delta-sigma parts, the AD7623ACPZRL can be duty-cycled between bursts of high-rate sampling and idle periods to extend battery life. Pair with the ADP7104 LDO for clean power.
Recommended
Automated Test Equipment (ATE)
ATE pin-electronics and parametric-measurement cards demand both speed and precision: 16-bit resolution at 1.33 MSPS makes the AD7623ACPZRL suitable for digitizing instrument-grade test waveforms and DUT response signals. Its deterministic SAR latency supports synchronized stimulus-response timing critical for production-test throughput. The exposed-pad LFCSP-VQ package handles continuous high-rate sampling without thermal throttling, and the LFCSP footprint allows easy migration to higher-resolution PulSAR family members when test specifications evolve. Use the AD7623 datasheet's reference PCB layout as a starting point.
Recommended
Recommended Products Summary
Engineering reference data for AD7623ACPZRL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7623ACPZ | AD7623ASTZ |
|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices |
| Package | 48-LFCSP-VQ (7x7 mm) | 48-LFCSP-VQ (7x7 mm) - same | 48-LQFP - same pin count, different package |
| Resolution | 16 bit | 16 bit | 16 bit |
| Sample Rate | 1.33 MSPS | 1.33 MSPS | 1.33 MSPS |
| Architecture | SAR (PulSAR), fully differential | SAR (PulSAR), fully differential | SAR (PulSAR), fully differential |
| Supply Voltage | 2.5 V single | 2.5 V single | 2.5 V single |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C |
| Packing Format | 13-inch Reel (-RL suffix) | Tray | Tray |
| RoHS | Compliant | Compliant | Compliant |
Key Differentiators
- Single 2.5 V supply simplifies power architecture versus 5 V / dual-supply SAR competitors (vs AD7676ACPRL (500 kSPS, 16-bit))
- 1.33 MSPS throughput is ~2.6x faster than the AD7676 500 kSPS SAR ADC (vs AD7676ACPRL)
- PulSAR family footprint-compatibility with AD7633 / AD7634 for easy resolution upgrade (vs AD7634BCPZRL (18-bit, 1.33 MSPS))
Design Notes
Solder the exposed pad of the AD7623ACPZRL directly to a continuous, low-impedance ground plane; do not leave it floating. The exposed pad is internally bonded to the analog ground and acts as both the primary thermal path and the reference for the on-chip common-mode buffer. Use multiple vias under the pad to stitch the top-layer ground to inner ground planes for low-inductance grounding, and avoid running digital signals beneath the analog front-end section of the package.
Place a 10 uF tantalum or ceramic bypass capacitor directly at the 2.5 V supply pin, supplemented by a 0.1 uF ceramic capacitor as close as possible to the pin. The AD7623 datasheet specifies the supply current scales with sample rate, so duty-cycle the device in low-power applications and ensure the regulator (e.g., ADP7104 LDO) has sufficient headroom and PSRR at the AD7623ACPZRL's 1.33 MSPS transient load steps. Star-ground the analog and digital supplies to a single point near the device.
Driving the AD7623ACPZRL requires a low-noise, fast-settling amplifier such as the AD8021 - the datasheet notes that 0.1% or 0.01% amplifier datasheet settling does NOT guarantee 16-bit settling at this ADC's acquisition time; verify the amplifier's 16-bit settling experimentally before committing to a driver choice. Use the AD8138 differential driver if the source signal is single-ended. Keep the analog input traces as short as possible and match their lengths for differential symmetry.
Common pitfalls: (1) Forgetting to solder the exposed pad - this causes the device to malfunction or self-heat; (2) Using an amplifier datasheet's 0.1% settling number instead of verifying 16-bit settling - this leads to missing codes at full speed; (3) Routing digital interface lines across the analog input area - this couples switching noise into the input; (4) Insufficient decoupling - leads to code-dependent errors; (5) Reference decoupling omitted - place a 10 uF + 0.1 uF combination at the REF pin per the datasheet's typical application circuit.
Compliance Information
RoHS-compliant per Analog Devices product page. Industrial temperature grade (-40C to +85C). Not AEC-Q100 qualified - this part targets industrial instrumentation, not automotive.