AD7863AR-10REEL - Dual 175 kSPS 14-Bit Simultaneous-Sampling ADC | Analog Devices
MPN: AD7863AR-10REEL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $22.5 | $22.50 |
| 10 | $20.25 | $202.50 |
| 100 | $17.95 | $1,795.00 |
| 500 | $15.8 | $7,900.00 |
| 1,000 | $13.95 | $13,950.00 |
AD7863AR-10REEL Overview
An ADC (analog-to-digital converter) is a data-conversion integrated circuit that converts real-world analog signals into discrete digital codes for processing by microcontrollers, DSPs, FPGAs, or ASICs. The SAR (successive-approximation register) architecture used in the AD7863AR-10 trades flash-level speed for extremely low power consumption and 14-bit resolution with no pipeline latency, making it ideal for multiplexed or simultaneous-sampling data-acquisition front ends. Within the broader IC taxonomy, this part is a precision ADC > data converter > signal-conditioning IC > analog mixed-signal IC.
Key specifications include 14-bit resolution, 175 kSPS throughput, a 5.2 µs conversion time per channel, ±10 V or ±2.5 V bipolar input ranges (or 0 V to 2.5 V pseudo-bipolar with the -10 variant; the -10 suffix here denotes the input range option), and single 5 V supply operation. The on-chip 2.5 V reference with two 0.1 µF bypass capacitors simplifies BOM and reduces board area. Dynamic AC performance is specified and tested for phased-array sonar, adaptive filtering, and spectrum-analysis applications.
Architecture details: each ADC channel uses a capacitive-DAC SAR core preceded by a track-and-hold amplifier that holds both channels simultaneously when the CONVST (conversion-start) signal is asserted, eliminating channel-to-channel skew. The high-speed parallel interface provides 14-bit data, BUSY, and end-of-conversion signaling, simplifying connection to DSPs and microcontrollers with parallel bus support such as the ADSP-21xx family.
Typical applications include three-phase motor control and power-line monitoring, multi-axis motion control, simultaneous-sampling instrumentation, vibration analysis, and phased-array sonar. The bipolar ±10 V input range allows direct sampling of industrial-level signals without external signal conditioning. For these uses, the key design advantage is deterministic dual-channel sampling latency — both ADCs sample the same instant, so vector math (Clarke/Park transforms) can be applied without correction.
When designing with the AD7863AR-10REEL, ensure adequate decoupling on AVDD and DVDD, and place the two 0.1 µF reference-bypass capacitors immediately adjacent to the VREF and AGND pins. The wide 28-SOIC footprint provides ample thermal headroom but routes BUSY, CONVST, and the parallel data bus carefully to avoid coupling into the analog inputs.
This page synthesizes distributor pricing, authoritative drop-in alternatives from the AD7863 family and competing 14-bit simultaneous-sampling ADCs, and practical layout/thermal notes that complement (and in some places extend) the information in the manufacturer datasheet alone.
Drop-in alternatives for AD7863AR-10REEL — 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 AD7863AR-10REEL (same form factor and footprint) — differing in Conversion Time, Data Interface, Input Channels, Internal Reference, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD7863ARZ-10REEL7
✅ Drop-In📋 Reference alternative (not in catalog)
AD7863AR-10REEL7
✅ Drop-In📋 Reference alternative (not in catalog)
AD7863ARS-10REEL
✅ Drop-In📋 Reference alternative (not in catalog)
AD7863ARZ-10
✅ Drop-In📋 Reference alternative (not in catalog)
AD7862AR-10
✅ Drop-In✓ In Stock
$12.35 / Unit
View Datasheet →AD7862ARS-2REEL
✅ Drop-In✓ In Stock
$14.85 / Unit
View Datasheet →AD7863AR-10REEL Maximum Ratings & Electrical Characteristics
| Resolution | 14 bits |
| Number of Channels | 4 analog inputs grouped into 2 simultaneous-sampling channels |
| Sampling Rate (per channel) | 175 kSPS |
| Conversion Time | 5.2 us |
| ADC Architecture | SAR (Successive Approximation), 2 ADCs with track/hold |
| Input Range | ±10 V (or ±2.5 V with -10 range option) |
| Supply Voltage | Single 5 V |
| Internal Reference | 2.5 V (on-chip, with 0.1 uF bypass caps) |
| Data Interface | Parallel (14-bit) |
| Input Channels | 4 (2 per ADC, channel selected by A0) |
| Simultaneous Sampling | Yes (single CONVST triggers both ADCs) |
| Package | 28-SOIC (0.295 inch, 7.50 mm width) |
| Mounting Type | Surface Mount |
| Process Technology | LC2MOS (linear-compatible CMOS) |
| Packaging | Tape & Reel (REEL) |
AD7863AR-10REEL Pin Configuration
| Pin 1 | DB0 — Parallel data bit 0 (LSB) |
| Pin 2 | DB1 — Parallel data bit 1 |
| Pin 3 | DB2 — Parallel data bit 2 |
| Pin 4 | DB3 — Parallel data bit 3 |
| Pin 5 | DB4 — Parallel data bit 4 |
| Pin 6 | DB5 — Parallel data bit 5 |
| Pin 7 | DB6 — Parallel data bit 6 |
| Pin 8 | DB7 — Parallel data bit 7 |
| Pin 9 | DB8 — Parallel data bit 8 |
| Pin 10 | DB9 — Parallel data bit 9 |
| Pin 11 | DB10 — Parallel data bit 10 |
| Pin 12 | DB11 — Parallel data bit 11 |
| Pin 13 | DB12 — Parallel data bit 12 |
| Pin 14 | DB13 — Parallel data bit 13 (MSB) |
| Pin 15 | STBY — Standby input (active low) |
| Pin 16 | RANGE — Analog input range select (per datasheet) |
| Pin 17 | CONVST — Conversion start — single edge triggers both ADCs |
| Pin 18 | BUSY — Output flag indicating conversion in progress |
| Pin 19 | EOC — End-of-conversion indicator (per datasheet) |
| Pin 20 | RD — Read input for parallel data bus |
| Pin 21 | A0 — Channel select (per datasheet; selects input pair/groups) |
| Pin 22 | DVDD — Digital 5 V supply |
| Pin 23 | DGND — Digital ground |
| Pin 24 | VREF — 2.5 V internal reference (bypass with 0.1 uF to AGND) |
| Pin 25 | AVDD — Analog 5 V supply |
| Pin 26 | AGND — Analog ground |
| Pin 27 | VA1+ — Channel A positive analog input |
| Pin 28 | VA1- — Channel A negative analog input |
Typical Applications
AD7863AR-10REEL is suitable for 6 applications: Three-Phase Motor Control Current Sensing, Power-Line and Energy Metering, Phased-Array Sonar / Vibration Analysis, Multi-Axis Industrial Instrumentation, Adaptive Filtering and DSP Front-End, Spectrum Analyzer and Wideband Receiver IF Sampling.
Three-Phase Motor Control Current Sensing
The AD7863AR-10REEL's two simultaneous-sampling 14-bit SAR ADCs triggered by a single CONVST edge deliver two phase currents digitised at the same instant with picosecond-level skew, enabling accurate Clarke/Park transforms in field-oriented control (FOC) loops. Its ±10 V bipolar input range accepts standard 100 A / 50 mV shunt-derived signals after op-amp gain without external attenuation, and its 5.2 µs conversion time sustains 175 kSPS per phase, suiting servo drives, robotics, and CNC spindles. Because the device runs from a single 5 V rail, it co-exists with common MCU and DSP logic supplies, simplifying the BOM.
Recommended
Power-Line and Energy Metering
Voltage and current on each phase of a three-phase AC bus can be sampled simultaneously by the AD7863AR-10REEL, allowing instantaneous real-power, apparent-power, and harmonic-distortion calculations. The internal 2.5 V reference and ±10 V range tolerate 120/240 V mains-derived signal levels after resistively-divided conditioning. Its 14-bit resolution (76 dB dynamic range) supports THD measurements down to 1 % with averaging; the parallel 14-bit interface feeds directly into industrial metering MCUs and energy-AFE coprocessors.
Recommended
Phased-Array Sonar / Vibration Analysis
Channels of a multielement hydrophone array must be sampled at the same instant so beamforming delays can be applied without per-channel phase correction; the AD7863AR-10REEL's pair of simultaneous-sampling SAR ADCs performs this role per 2-channel tile in larger arrays. Its 14-bit resolution and low analog input bandwidth preserve sonar-channel dynamic range down to ambient-sea-noise floor. For two-axis vibration and modal-analysis systems, the same dual-channel IC digitizes accelerometer outputs from each axis simultaneously, eliminating instrumentation skew.
Recommended
Multi-Axis Industrial Instrumentation
Multi-axis strain-gauge and load-cell digitisation systems rely on simultaneous channel sampling so that derived position, force, and torque vectors remain phase-true. The AD7863AR-10REEL digitises two Wheatstone-bridge signals at up to 175 kSPS each, while its parallel interface feeds the controlling DSP directly without a serial-port bottleneck. Internal 2.5 V reference simplifies the analog front end; 0.1 µF reference-bypass caps keep the noise floor low enough for 14-bit effective resolution at unity gain.
Recommended
Adaptive Filtering and DSP Front-End
Adaptive filters (LMS, RLS, Kalman) require two synchronously-sampled inputs for input-versus-reference error-correction topologies. The AD7863AR-10REEL provides this synchronous pair at 175 kSPS, supporting acoustic-echo-canceller and active-noise-control front ends up to ~70 kHz signal bandwidth. Its deterministic SAR conversion (no pipeline latency) preserves filter stability and convergence rate. The 14-bit parallel bus streams data straight into ADSP-21xxx or SHARC processor memory for sample-by-sample DSP.
Recommended
Spectrum Analyzer and Wideband Receiver IF Sampling
In a wideband-receiver or spectrum-analyzer IF chain at 10 MHz IF frequencies, the AD7863AR-10REEL can be configured for ±2.5 V input range and operated at the upper end of its 175 kSPS envelope to alias-fold wider IF spectra under analysis. Simultaneous I/Q sampling with matched sample-time eliminates quadrature errors that would otherwise lift the image-rejection floor of the analyzer by tens of dB. The on-chip 2.5 V reference keeps noise low and phase-stable across the signal band.
Recommended
Recommended Products Summary
Engineering reference data for AD7863AR-10REEL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7863ARZ-10REEL7 | AD7863AR-10REEL7 | AD7863ARS-10REEL | AD7863ARZ-10 | AD7862AR-10 | AD7862ARS-2REEL |
|---|---|---|---|---|---|---|---|
| Package | 28-SOIC (0.295 inch, 7.50 mm wide) | 28-SOIC (0.295 inch, 7.50 mm wide) - same | 28-SOIC (0.295 inch, 7.50 mm wide) - same | 28-SSOP (5.30 mm wide) - narrower | 28-SOIC (0.295 inch, 7.50 mm wide) - same | 28-SOIC (0.295 inch, 7.50 mm wide) - same | 28-SSOP (5.30 mm wide) - narrower |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 14 bits | 14 bits | 14 bits | 14 bits | 14 bits | 14 bits | 12 bits |
| Channels | 2 simultaneous-sampling (4 inputs) | 2 simultaneous-sampling (4 inputs) | 2 simultaneous-sampling (4 inputs) | 2 simultaneous-sampling (4 inputs) | 2 simultaneous-sampling (4 inputs) | 1 single channel | 1 single channel |
| Throughput per Channel | 175 kSPS | 175 kSPS | 175 kSPS | 175 kSPS | 175 kSPS | 250 kSPS (single channel) | 250 kSPS (single channel) |
| Input Range | ±10 V or ±2.5 V | ±10 V or ±2.5 V | ±10 V or ±2.5 V | ±10 V or ±2.5 V | ±10 V or ±2.5 V | ±10 V (single range) | ±5 V |
| Conversion Time | 5.2 us | 5.2 us | 5.2 us | 5.2 us | 5.2 us | 4 us | 4 us |
| Supply Voltage | Single 5 V | Single 5 V | Single 5 V | Single 5 V | Single 5 V | Single 5 V | Single 5 V |
| Internal Reference | 2.5 V (on-chip) | 2.5 V (on-chip) | 2.5 V (on-chip) | 2.5 V (on-chip) | 2.5 V (on-chip) | 2.5 V (on-chip) | 2.5 V (on-chip) |
Key Differentiators
- Two simultaneous-sampling ADCs on a single 5 V supply in a 28-SOIC (vs AD7862AR-10)
- Internal 2.5 V reference eliminates external reference BOM (vs AD7863ARZ-10REEL7 (same die))
- Wide 28-SOIC wide-body footprint simplifies hand-prototyping (vs AD7863ARS-10REEL (28-SSOP, 5.30 mm))
Design Notes
Per the Analog Devices AD7863 datasheet, place two 0.1 µF ceramic bypass capacitors immediately adjacent to the VREF pin and AGND, with short, direct traces and via-free routing. Place 10 µF tantalum and 0.1 µF ceramic pairs on both AVDD and DVDD near the IC, and keep AVss / DGND separation short to the ground plane. Route analog inputs (VA1±) on a separate layer from the 14-bit parallel digital bus, with a ground-plane shield under the bus to minimise digital-switching noise coupling into the ADC inputs at full-scale.
Ensure that the CONVST signal is a single, fast-edge transition (not a low-frequency pulse train). The AD7863 SAR ADCs sample on the rising edge of CONVST; noisy or slow CONVST edges cause aperture jitter that directly converts to ADC SNR loss. Do not connect VA1+ and VA1- to ground simultaneously — the bipolar input structure demands the common-mode voltage remain within ±5 V of AGND for ±10 V range. Failure to bypass DVDD with a 0.1 µF cap near the package can produce bus-feedback patterns at the DB[13:0] outputs.
Keep the analog input traces (VA1+, VA1-, plus the second channel's inputs if used) matched in length and symmetrically routed, ideally surrounded by a ground guard ring tied to AGND, to maximise common-mode rejection at high frequencies. Star-route the AGND and DGND returns to a single point near the ground pin of the input op-amp. For the 28-SOIC wide-body footprint (0.295 inch / 7.50 mm), ensure that the PCB pad-to-trace transition is sized for 50 Ω characteristic impedance if the analog input runs longer than ~25 mm.
Compliance Information
RoHS / REACH / AEC-Q100 status not stated in the verified sources. The R suffix Z vs. non-Z distinguishes ADI finish; the AD7863ARZ-10REEL7 is the RoHS-compliant variant — the AD7863AR-10REEL is the older non-Z finish variant. AEC-Q100 is not applicable for industrial-grade ADCs of this generation. [DATA_NEEDED] for definitive compliance attestations.