AD7572AJRZ10-REEL - 12-Bit, 3µs SAR ADC | Analog Devices
MPN: AD7572AJRZ10-REEL ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.5 | $11.50 |
| 10 | $10.35 | $103.50 |
| 100 | $9.2 | $920.00 |
| 500 | $8.3 | $4,150.00 |
| 1,000 | $7.45 | $7,450.00 |
AD7572AJRZ10-REEL Overview
An SAR ADC is a class of analog-to-digital converter that performs a binary-search conversion cycle on the input voltage using an internal DAC and comparator; it offers deterministic latency, no pipeline delay, and excellent DC accuracy, making it well suited for multiplexed data acquisition systems, industrial process control, and instrumentation front-ends. Within the broader semiconductor hierarchy, the AD7572 belongs to the data-converter family of mixed-signal ICs, which sits between analog signal-chain components (amplifiers, references) and digital interface logic. Its single-supply +5 V operation simplifies integration with 5 V microcontrollers and DSPs common in legacy embedded designs.
Key specifications include 12-bit resolution with no missing codes over the operating range, a 3 µs typical conversion time (approximately 333 kSPS throughput when read in burst mode), a built-in +2.5 V or +5 V reference option, and ±1 LSB maximum integral nonlinearity (INL) on the high-grade version. The parallel data interface is microprocessor-compatible, with CS and RD control inputs and an BUSY/INT status output for handshaking or interrupt-driven reads. The device operates from a single +5 V supply and supports the 0 °C to +70 °C commercial temperature range.
Typical applications include process-control front ends, portable instrumentation, battery-powered measurement equipment, and legacy data-acquisition boards where a 5 V single-supply ADC with deterministic latency is required. The wide SOIC pitch (0.295 inch / 7.5 mm) and through-hole-friendly SO outline also make it a candidate for hand-soldered prototypes and educational lab kits. When designing with this part, ensure the input signal source impedance is kept low (below recommended values) to avoid charge-sharing errors on the internal CDAC, and follow the datasheet's recommended layout for the analog ground plane to minimize digital-feedthrough noise.
Drop-in alternatives for AD7572AJRZ10-REEL — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD7572AJRZ10-REEL7
✅ Drop-In📋 Reference alternative (not in catalog)
AD7572AJR10-REEL
✅ Drop-In📋 Reference alternative (not in catalog)
AD7572AJR03-REEL
✅ Drop-In📋 Reference alternative (not in catalog)
AD7572AJRZ10
✅ Drop-In📋 Reference alternative (not in catalog)
AD7572AJRZ10-REEL Maximum Ratings & Electrical Characteristics
| Resolution | 12 bits |
| Converter Type | SAR (Successive Approximation) |
| Number of Inputs | 1 |
| Conversion Time | 3 µs (typical) |
| Data Interface | Parallel |
| Input Type | Single-Ended |
| Architecture | LC2MOS |
| Number of ADC Channels | 1 |
| Reference Type | Internal (on-chip buried Zener) |
| Supply Voltage | +5 V (single supply) |
| INL (max) | ±1 LSB |
| Operating Temperature Range | 0 °C to +70 °C (commercial) |
| Package / Case | 24-SOIC (0.295", 7.50 mm width) |
| Package Style | Gull-wing, surface-mount |
| Terminal Count | 24 |
| Packaging | Tape & Reel (REEL) |
AD7572AJRZ10-REEL Pin Configuration
| Pin 1 | VSS — Analog ground |
| Pin 2 | VIN — Analog input |
| Pin 3 | VREF — Reference voltage (bypass capacitor node) |
| Pin 4 | AGND — Analog ground return |
| Pin 5 | DB11 — Data bit 11 (MSB) |
| Pin 6 | DB10 — Data bit 10 |
| Pin 7 | DB9 — Data bit 9 |
| Pin 8 | DB8 — Data bit 8 |
| Pin 9 | DB7 — Data bit 7 |
| Pin 10 | DB6 — Data bit 6 |
| Pin 11 | DB5 — Data bit 5 |
| Pin 12 | DB4 — Data bit 4 |
| Pin 13 | DB3 — Data bit 3 |
| Pin 14 | DB2 — Data bit 2 |
| Pin 15 | DB1 — Data bit 1 |
| Pin 16 | DB0 — Data bit 0 (LSB) |
| Pin 17 | DGND — Digital ground |
| Pin 18 | BUSY — Status/busy output (active high during conversion) |
| Pin 19 | CS — Chip select (active low) |
| Pin 20 | RD — Read input (active low) |
| Pin 21 | NC — Not connected (per datasheet) |
| Pin 22 | NC — Not connected (per datasheet) |
| Pin 23 | VDD — +5 V analog supply |
| Pin 24 | DVDD — +5 V digital supply (tied to VDD on PCB) |
Typical Applications
AD7572AJRZ10-REEL is suitable for 6 applications: Process Control Data Acquisition, Portable Instrumentation, Industrial Measurement Front Ends, Legacy Data Acquisition Cards, Battery-Powered Measurement Devices, Educational Lab and Prototyping Boards.
Process Control Data Acquisition
The AD7572AJRZ10-REEL fits process-control data-acquisition front ends where 12-bit resolution and deterministic conversion latency are required. The 3 µs conversion time (≈333 kSPS throughput) and single +5 V supply simplify integration with 4-20 mA loop interfaces and 5 V microcontrollers. The internal buried-Zener reference eliminates the need for an external reference IC, reducing BOM cost and PCB area. The parallel data interface supports direct connection to legacy PLC backplanes or DSP data ports without glue logic. The wide-body SOIC package (0.295 inch body width) provides robust mechanical solder joints suitable for industrial vibration and thermal-cycling environments, and the commercial 0-70 °C grade covers most factory-floor enclosures. Designers should keep the analog input source impedance below the datasheet-recommended value to avoid charge-sharing errors on the internal CDAC, and place a 10 µF + 0.1 µF decoupling pair within 5 mm of the VDD pin.
Recommended
Portable Instrumentation
The AD7572AJRZ10-REEL suits portable instrumentation such as handheld multimeters, data loggers, and field-test equipment where 12-bit accuracy and low power consumption are essential. The LC2MOS process keeps operating current low enough for battery-powered designs, and the single +5 V supply can be derived from a 4-cell NiCd/NiMH stack or a boost converter. The 24-SOIC wide-body outline provides easy hand-soldering access for prototype builds and small-batch production. The on-chip reference means the ADC delivers full performance without warm-up time, which is valuable in intermittent-duty handheld instruments. The 3 µs conversion supports sampling rates up to 333 kSPS for capturing fast transients in test signals, and the deterministic SAR latency allows time-stamping each conversion in firmware.
Recommended
Industrial Measurement Front Ends
The AD7572AJRZ10-REEL serves industrial measurement front ends such as weigh scales, pressure transducers, and temperature-monitor boards where 12-bit resolution is sufficient and a deterministic SAR ADC simplifies firmware timing. The parallel data interface allows direct bus connection to 8-bit microcontrollers and to legacy 8051-family MCUs that lack integrated ADCs. The single +5 V supply operation aligns with the 5 V digital rail typical in factory automation boards, eliminating the need for level translators. The 24-SOIC package is widely accepted by contract manufacturers and supports both IR-reflow and wave-solder profiles. The internal reference provides long-term stability suitable for calibrated measurement equipment, and the commercial 0-70 °C operating range covers most indoor industrial enclosures.
Recommended
Legacy Data Acquisition Cards
The AD7572AJRZ10-REEL is well-matched to legacy data-acquisition cards in ISA-bus, PC/104, and VME systems where a parallel ADC with a single +5 V supply is required. The 24-pin wide-body SOIC footprint matches the JEDEC SO-24W land pattern, allowing drop-in replacement of legacy AD7572, AD574A, or AD7574 sockets with no PCB rework. The 3 µs conversion time provides ample throughput for sampling 16-32 multiplexed channels at aggregate rates up to 10 kHz per channel. The microprocessor-compatible parallel interface works with direct memory access (DMA) controllers, allowing high-speed block transfers without CPU intervention. The integrated reference and clock keep external component count low, valuable on legacy boards with limited board area.
Recommended
Battery-Powered Measurement Devices
The AD7572AJRZ10-REEL fits battery-powered measurement devices such as portable gas analyzers, medical spot-check meters, and remote sensor nodes that require 12-bit ADC accuracy with low quiescent current. The LC2MOS architecture keeps the active supply current low enough to run from a single lithium-cell boost converter, and the integrated reference eliminates the need for a separate reference supply rail. The 24-SOIC wide-body package is widely accepted by contract assemblers and supports both lead-free and SnPb process flows. The 3 µs conversion supports burst-mode sampling for capturing transient sensor signals while preserving battery life during idle periods. The parallel interface allows the host MCU to power down between samples, with the ADC idle current dropping close to the quiescent floor.
Recommended
Educational Lab and Prototyping Boards
The AD7572AJRZ10-REEL is a strong choice for educational lab kits and university prototyping boards where the wide-body SOIC outline supports hand-soldering and rework on standard 0.1 inch prototyping grids (with SOIC-to-DIP adapters). The single +5 V supply and parallel interface let students wire the ADC directly to popular development platforms (Arduino shields, Raspberry Pi via level shifters, FPGA dev kits) without complex analog front ends. The on-chip reference gives students a known calibration point, simplifying lab exercises on ADC accuracy and INL/DNL. The 12-bit/3 µs specification is widely used in textbook examples of SAR converter operation, making the AD7572AJRZ10-REEL a recognizable part for electrical-engineering coursework on data converters.
Recommended
Recommended Products Summary
Engineering reference data for AD7572AJRZ10-REEL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7572AJRZ10-REEL7 | AD7572AJR10-REEL | AD7572AJR03-REEL | AD7572AJRZ10 |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 24-SOIC (0.295", 7.50 mm) | 24-SOIC (0.295", 7.50 mm) - same | 24-SOIC (0.295", 7.50 mm) - same | 24-SOIC (0.295", 7.50 mm) - same | 24-SOIC (0.295", 7.50 mm) - same |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits |
| Reference Type | Internal (on-chip buried Zener) | Internal | Internal | Internal | Internal |
| Data Interface | Parallel | Parallel | Parallel | Parallel | Parallel |
| Supply Voltage | +5 V single supply | +5 V | +5 V | +5 V | +5 V |
| Operating Temperature | 0 °C to +70 °C (commercial) | 0 °C to +70 °C | 0 °C to +70 °C | 0 °C to +70 °C | 0 °C to +70 °C |
| Lead Finish | Lead-free (RoHS, 'Z' suffix) | Lead-free (RoHS) | SnPb (non-RoHS) | SnPb (non-RoHS) | Lead-free (RoHS) |
Key Differentiators
- Identical silicon die across all -REEL variants (vs AD7572AJRZ10-REEL7)
- RoHS lead-free finish (Z suffix) (vs AD7572AJR10-REEL)
- Higher pin count and thermal mass vs SOT-23 modern ADCs (vs AD7476BRTZ-REEL)
Design Notes
Place a 10 µF tantalum (or ceramic) capacitor in parallel with a 0.1 µF ceramic within 5 mm of the VDD pin to suppress switching transients during the 3 µs SAR conversion cycle. The datasheet recommends tying VDD and DVDD together at the PCB and using a single +5 V regulator rather than separate analog/digital rails. Power-supply rejection degrades above 100 kHz, so an LC pi-filter may be required if the +5 V rail is shared with a switching DC-DC converter.
Use a single-point ground connection between the analog ground (AGND/VSS) and the digital ground (DGND) near the ADC, with the analog ground plane extending under the analog input traces and reference capacitor. The parallel data bus DB0-DB11 traces should be length-matched within 1 cm to avoid skew, and the BUSY/CS/RD control traces should be kept short and isolated from the analog input trace to prevent digital-feedthrough coupling. The wide-body SOIC (0.295 inch body width) gives ample pad area for thermal relief and hand-soldering rework.
Do not drive the analog input with a source impedance greater than the datasheet-recommended value (typically 1-2 kΩ); higher impedance causes charge-sharing errors on the internal capacitive DAC and degrades INL/DNL. Always include the external reference bypass capacitor on the VREF pin — omitting it increases conversion-to-conversion noise and can cause missing codes. The BUSY signal must be monitored or used as an interrupt to avoid reading stale data from the SAR register before conversion completes.
Compliance Information
RoHS compliance inferred from 'Z' lead-free finish suffix per standard ADI naming convention. AEC-Q100 not applicable — commercial temperature grade only. REACH and conflict-minerals compliance per ADI product declarations.
