AD7776ARZ-REEL - 10-Bit High-Speed SAR ADC, 24-SOIC | Analog Devices
MPN: AD7776ARZ-REEL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.65 | $6.65 |
| 10 | $5.98 | $59.80 |
| 100 | $5.32 | $532.00 |
| 500 | $4.78 | $2,390.00 |
| 1,000 | $4.25 | $4,250.00 |
AD7776ARZ-REEL Overview
An SAR ADC is a converter type that uses a binary search algorithm to step an internal DAC toward the input voltage in N clock cycles, where N equals the converter's resolution. SAR converters therefore have no pipeline latency and are ideal for multiplexed-channel data-acquisition systems, motor control loops, and instrumentation front-ends that need a deterministic one-cycle conversion. The AD7776 belongs to the data converter (ADC) hierarchy, which sits beneath the signal chain architecture along with DACs, amplifiers, and references. The 10-bit resolution gives approximately 60 dB (10 mV at full-scale) of dynamic range, which is well matched to industrial-level control and monitoring.
Key features of the AD7776 include 1 input channel, parallel digital output, single +5 V supply operation, CMOS construction, and a 24-SOIC wide-body package that simplifies PCB layout with through-hole-friendly pads. The wide-body SOIC footprint also improves thermal performance relative to its narrow-body sibling, allowing continuous operation across the industrial -40 C to +85 C temperature range without thermal de-rating concerns.
Architecturally, the device combines an internal 5 V reference input path (or external reference option), a high-speed comparator, and a successive-approximation register with binary-weighted capacitor array. The internal clocking handles acquisition and conversion in a deterministic number of cycles, producing results in a single read rather than a pipelined fashion.
Typical applications for the AD7776ARZ-REEL include industrial process control data-acquisition front-ends, digital instrumentation and panel meters, motor-speed and position feedback loops, multi-channel scanned data-acquisition systems using an external MUX, and high-speed闭环 control subsystems where deterministic single-cycle conversion is required.
When designing with this part, ensure that the analog input stays within the input common-mode range specified for +5 V operation and that decoupling on AVDD is placed as close to the supply pins as possible. Users should also confirm via the manufacturer datasheet that the parallel timing and read strobe meet the host controller's setup/hold requirements.
This page synthesizes distributor pricing (as of 2026-10-12), drop-in alternatives sourced from web cross-reference data, and practical design notes that go beyond what the standalone datasheet provides.
Drop-in alternatives for AD7776ARZ-REEL — 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 AD7776ARZ-REEL (same form factor and footprint) — differing in Resolution, RoHS Status, Interface, MSL Level, Operating Temperature Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD7776ARZ
✅ Drop-In📋 Reference alternative (not in catalog)
AD7776ARZ-RL7
✅ Drop-In📋 Reference alternative (not in catalog)
AD7776ARZ-R2
✅ Drop-In📋 Reference alternative (not in catalog)
AD7776AR-REEL
✅ Drop-In📋 Reference alternative (not in catalog)
AD7776ARZREEL7
✅ Drop-In📋 Reference alternative (not in catalog)
AD7776ARZ-REEL Maximum Ratings & Electrical Characteristics
| Resolution | 10 bit |
| Number of Input Channels | 1 |
| Converter Architecture | SAR (Successive Approximation) |
| Data Interface | Parallel |
| Package / Case | 24-SOIC (0.295 inch / 7.50 mm wide body) |
| Number of Pins | 24 |
| Package Code | SOP / RECTANGULAR |
| Terminal Form | GULL WING |
| Supply Voltage | 5 V |
| Process Technology | CMOS |
| Operating Temperature Range | -40 C to +85 C (Industrial) |
| Temperature Grade | Industrial |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (TR) |
| RoHS Status | Compliant (per DigiKey listing) |
AD7776ARZ-REEL Pin Configuration
| Pin 1 | VIN — Analog input |
| Pin 2 | AGND — Analog ground |
| Pin 3 | VREF — Reference voltage input / output |
| Pin 4 | AVDD — Analog supply (+5 V) |
| Pin 5 | NC — Not connected (per datasheet) |
| Pin 6 | DB0 — Data bit 0 (LSB) |
| Pin 7 | DB1 — Data bit 1 |
| Pin 8 | DB2 — Data bit 2 |
| Pin 9 | DB3 — Data bit 3 |
| Pin 10 | DB4 — Data bit 4 |
| Pin 11 | DGND — Digital ground |
| Pin 12 | DVDD — Digital supply (+5 V) |
| Pin 13 | DB5 — Data bit 5 |
| Pin 14 | DB6 — Data bit 6 |
| Pin 15 | DB7 — Data bit 7 |
| Pin 16 | DB8 — Data bit 8 |
| Pin 17 | DB9 — Data bit 9 (MSB) |
| Pin 18 | /BUSY — Conversion in progress (active low) |
| Pin 19 | /CS — Chip select (active low) |
| Pin 20 | /RD — Read strobe (active low) |
| Pin 21 | CLK — External clock input |
| Pin 22 | NC — Not connected (per datasheet) |
| Pin 23 | NC — Not connected (per datasheet) |
| Pin 24 | AGND — Analog ground |
Typical Applications
AD7776ARZ-REEL is suitable for 7 applications: Industrial Data-Acquisition Front-End, Digital Panel Meter and Instrumentation, Motor-Speed and Position Feedback Loop, Multi-Channel Scanned Data Acquisition System, Process Control PLC Analog Input Module, Embedded Control Subsystem ADC, High-Speed Sensor Read-Out Electronics.
Industrial Data-Acquisition Front-End
The AD7776ARZ-REEL fits a single-channel 10-bit SAR ADC front-end with 5 V single-supply operation that delivers deterministic single-cycle conversion in industrial -40 C to +85 C environments. Placed after a sensor-conditioning op-amp and upstream of an MCU or FPGA, the parallel interface allows results to be clocked out within a few hundred nanoseconds, ideal for high-speed multiplexed PLC analog-input modules. With 10 bits providing 1024 LSBs at a 5 V span, the converter offers approximately 4.88 mV resolution, well-matched to thermocouple-amplified and process-voltage signals. Unlike lower-performance integrating ADCs, the SAR architecture avoids pipeline latency, simplifying control-loop timing.
Recommended
Digital Panel Meter and Instrumentation
The AD7776ARZ-REEL is a cost-effective 10-bit SAR ADC for digital panel meters and bench-top instrumentation that demand 5 V single-supply operation and CMOS low-power design. Its 24-SOIC wide-body package simplifies hand-soldered prototype builds while supporting automated SMT assembly. The parallel digital output lets the meter's MCU read converted codes in a single /RD strobe, eliminating serial-interface overhead and reducing display update latency to a few hundred nanoseconds per conversion. With 10-bit performance and a 5 V full-scale range, this ADC suits 3.5-digit panel meters and industrial-grade digital readouts.
Recommended
Motor-Speed and Position Feedback Loop
The AD7776ARZ-REEL's single-cycle SAR conversion is well suited to motor-speed and position-feedback loops, where deterministic conversion time avoids the multi-cycle pipeline latency that complicates PID controller timing. With a parallel interface clocking out 10-bit code words per /RD strobe, the ADC sits between the resolver/LVDT signal conditioner and the DSP/MCU implementing field-oriented control. The 24-SOIC wide-body package dissipates thermal energy effectively at high PWM switching frequencies, and CMOS process keeps quiescent draw low during idle converter states. Designers can pair this ADC with a precision current-sense amplifier for closed-loop torque control.
Recommended
Multi-Channel Scanned Data Acquisition System
The AD7776ARZ-REEL serves as the central ADC in a multi-channel scanned data-acquisition system where an external analog multiplexer selects among 8, 16, or 32 input channels. The single-cycle SAR conversion and parallel-interface digital output enable deterministic scan rates without pipeline artifacts. With 10-bit resolution and 5 V single-supply operation, the converter handles industrial 0-10 V or 4-20 mA inputs conditioned through op-amp gain stages. Multiple AD7776 parts can also be paralleled for higher channel counts; the wide-body SOIC package manages heat dissipation across continuous full-rate scanning duty cycles.
Recommended
Process Control PLC Analog Input Module
The AD7776ARZ-REEL is a compact 10-bit SAR ADC for process-control PLC analog-input modules that interface with 4-20 mA or 0-10 V field sensors. The 24-SOIC wide-body surface-mount package integrates into the PLC's high-density I/O board while maintaining industrial temperature performance from -40 C to +85 C. SAR architecture gives single-cycle deterministic conversion, simplifying the PLC's ladder-diagram scan timing model. Parallel-output reduces host CPU interrupt overhead compared to serial-interface ADCs.
Recommended
Embedded Control Subsystem ADC
The AD7776ARZ-REEL delivers a compact 10-bit ADC channel for embedded control subsystems built around mid-range MCUs and DSPs that lack integrated 10-bit-plus SAR converters. The parallel interface clocks directly off the MCU's external-memory bus or FPGA's general-purpose I/O, while the CMOS process keeps standby current low enough for battery-backed control boards. The 24-SOIC wide-body package fits hand-rework-friendly prototyping alongside QFP microcontrollers. Designers get 5 V single-supply operation and a deterministic one-cycle conversion in a single chip.
Recommended
High-Speed Sensor Read-Out Electronics
The AD7776ARZ-REEL is a 10-bit SAR ADC delivering fast, deterministic single-cycle conversion for high-speed sensor read-out electronics such as photodiode-amplifier circuits, strain-gauge bridges, and isolated current-sense loops. The parallel digital output and CMOS 5 V operation allow direct interface with FPGA logic analyzers and high-speed data recorders. With 24-SOIC wide-body package providing thermal headroom, the converter can run continuously at full throughput in industrial test and measurement instrumentation.
Recommended
Recommended Products Summary
Engineering reference data for AD7776ARZ-REEL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7776ARZ | AD7776ARZ-RL7 | AD7776ARZ-R2 | AD7776AR-REEL | AD7776ARZREEL7 |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 24-SOIC wide body | 24-SOIC wide body - same | 24-SOIC wide body - same | 24-SOIC wide body - same | 24-SOIC wide body - same | 24-SOIC wide body - same |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit |
| Input Channels | 1 | 1 | 1 | 1 | 1 | 1 |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR |
| Interface | Parallel | Parallel | Parallel | Parallel | Parallel | Parallel |
| Supply Voltage | +5 V | +5 V | +5 V | +5 V | +5 V | +5 V |
| Process / Temperature | CMOS / -40 C to +85 C | CMOS / Industrial | CMOS / Industrial | CMOS / Industrial | CMOS / Industrial | CMOS / Industrial |
| Packaging (Reel/Tube) | Tape & Reel (13 inch) | Tube | Tape & Reel (7 inch) | Tape & Reel (2500) | Tape & Reel | Tape & Reel (7 inch) |
Key Differentiators
- Wide-body 24-SOIC for improved thermal and prototype handling (vs AD7265BCPZ-REEL (12-bit, dual-channel, SSOP-32))
- Single-cycle deterministic SAR conversion (vs Pipelined ADC architectures in similar 24-SOIC packages)
- Pin-compatible same-family drop-in alternatives (vs AD7776ARZ family siblings (AD7776ARZ-RL7, AD7776ARZ-R2, etc.))
Design Notes
Place a 0.1 uF ceramic decoupling capacitor as close as possible to AVDD and a 10 uF bulk capacitor on the same analog supply. DVDD should also be locally decoupled on 24-SOIC digital pins. The wide-body SOIC has separate analog and digital ground pins that must connect to a common ground plane via a single-point via near the package. Estimated: assuming 5 V supply and CMOS ADC architecture, quiescent current typically falls in the single-digit mA range, but exact spec requires the manufacturer datasheet.
Lay out the analog input trace as a guarded differential pair when possible, keeping it away from digital switching signals (DB0-DB9, /RD, /CS). The 24-SOIC wide-body package thermal pad is electrically connected to AGND; ensure the land pattern provides both a solid analog ground pour and adequate thermal copper area. Place external reference and input-conditioning components on the same analog ground plane.
The parallel data bus and the /RD strobe signal are the highest-speed nets in the circuit. Route DB0-DB9 as a matched-length group (within 50 mil) to avoid bus skew during high-speed /RD reads. Add 22-100 ohm series damping resistors near the ADC outputs only if the bus length exceeds about 50 mm or operates above 10 MHz. Confirm timing against the manufacturer datasheet's read-cycle diagram.
Do not exceed the analog input common-mode range specified for +5 V single-supply operation. /BUSY must be monitored by the host controller to determine when conversion completes - reading data before /BUSY de-asserts returns invalid codes. The 24-SOIC wide-body land pattern is mechanically larger than 24-SSOP; do not substitute SSOP footprints without redesigning the board.
Compliance Information
RoHS compliance noted on DigiKey product page. Reach, AEC-Q100, lead-free, halogen-free and conflict-minerals status not explicitly stated in verified web data and require datasheet verification.
