AD7863ARSZ-10REEL - 14-Bit 175kSPS Dual Simultaneous-Sampling ADC | ADI
MPN: AD7863ARSZ-10REEL ✗ انتهى عمره الإنتاجيAD7863ARSZ-10REEL نظرة عامة
A successive-approximation register (SAR) ADC is a binary-search converter that compares the sampled input against an internal DAC, resolving one bit per clock cycle. SAR ADCs are prized for their deterministic latency, intrinsic anti-alias filtering (no switching ripple), and excellent DC linearity - characteristics that make the AD7863 particularly well suited to digitising sinusoidal signals, transducer outputs, and motor-control feedback. Within the broader taxonomy, the AD7863 sits at: ADC -> SAR ADC -> data converter -> signal-chain IC -> semiconductor.
Key differentiating features include the simultaneous-sampling dual-channel topology, integrated 2.5 V reference (eliminating an external reference in many designs), low 50 mW typical power consumption from a single 5 V supply, and a high-speed parallel bus that simplifies connection to DSPs, FPGAs, and microcontrollers. The -10 speed grade is the 175 kSPS through-rate variant and is specified across the -40C to +85C industrial temperature range.
Typical applications include three-phase motor control and power-line monitoring, instrumentation and data acquisition systems, multi-axis inertial measurement, industrial process control, and medical patient monitoring where synchronised channel capture is required. The internal reference plus parallel bus keeps the BOM small while preserving measurement integrity.
بدائل مباشرة لـ AD7863ARSZ-10REEL — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع AD7863ARSZ-10REEL (نفس عامل الشكل والبصمة) — يختلف في Conversion Time, Input Type, Internal Reference, Number of Channels, Package.
AD7863ARSZ-10REEL7
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
AD7863ARSZ-10
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
AD7863ARSZ-2REEL
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
AD7863ARSZ-3
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
AD7863ARSZ-10REEL الحدود القصوى والخصائص الكهربائية
| الدقة | 14 bit |
| Sample Rate | 175 kSPS per channel |
| Number of Channels | 2 (simultaneous sampling) / 4 inputs (2:1 mux) |
| ADC Architecture | SAR (Successive Approximation) |
| Conversion Time | 5.2 us per channel |
| Input Type | Single-ended, 4 analog inputs via A0 selection |
| جهد التغذية | 5 V single supply |
| Power Consumption | 50 mW typical |
| Internal Reference | 2.5 V (integrated) |
| الواجهة | High-speed parallel |
| Track/Hold Amplifiers | 2 (integrated, matched) |
| درجة حرارة التشغيل | -40C to +85C |
| العلبة | 28-pin SSOP (5.30 mm body) |
| نوع التركيب | Surface Mount |
| Lead Free / RoHS | Yes (LEAD FREE per datasheet) |
| Conversion Start | Single CONVST signal latches both channels |
| BUSY Indicator | Yes |
| Process Technology | LC2MOS (linear-compatible CMOS) |
تكوين أطراف AD7863ARSZ-10REEL
| دبوس 1 | VA1 — Analog input A, channel 1 |
| دبوس 2 | VA2 — Analog input A, channel 2 |
| دبوس 3 | VB1 — Analog input B, channel 1 |
| دبوس 4 | VB2 — Analog input B, channel 2 |
| دبوس 5 | AGND — Analog ground |
| دبوس 6 | REFIN/REFOUT — Internal 2.5 V reference input/output |
| دبوس 7 | A0 — Channel select input (logic low = ch1, high = ch2) |
| دبوس 8 | CONVST — Conversion start (active edge initiates both ADCs) |
| دبوس 9 | BUSY — Conversion in progress indicator (active high) |
| دبوس 10 | CS — Chip select (active low) |
| دبوس 11 | RD — Read enable (active low) |
| دبوس 12 | DB13 — Data bit 13 (MSB) |
| دبوس 13 | DB12 — Data bit 12 |
| دبوس 14 | DB11 — Data bit 11 |
| دبوس 15 | DB10 — Data bit 10 |
| دبوس 16 | DB9 — Data bit 9 |
| دبوس 17 | DB8 — Data bit 8 |
| دبوس 18 | DB7 — Data bit 7 |
| دبوس 19 | DB6 — Data bit 6 |
| دبوس 20 | DB5 — Data bit 5 |
| دبوس 21 | DB4 — Data bit 4 |
| دبوس 22 | DB3 — Data bit 3 |
| دبوس 23 | DB2 — Data bit 2 |
| دبوس 24 | DB1 — Data bit 1 |
| دبوس 25 | DB0 — Data bit 0 (LSB) |
| دبوس 26 | DGND — Digital ground |
| دبوس 27 | VDD — Digital 5 V supply |
| دبوس 28 | VCC — Analog 5 V supply |
التطبيقات النموذجية
AD7863ARSZ-10REEL مناسب لـ 6 التطبيقs: Three-Phase Motor Control & Power-Line Monitoring, Multi-Axis Inertial Measurement & IMU Front-Ends, Industrial Data Acquisition & Process Control, Medical Patient Monitoring (ECG, EEG Front-End), Test & Measurement Instrumentation, Uninterruptible Power Supply (UPS) Monitoring.
Three-Phase Motor Control & Power-Line Monitoring
The AD7863ARSZ-10REEL's dual simultaneous-sampling SAR channels capture two phase currents or voltages at the exact same instant, preserving phase relationship for accurate power calculations. With 14-bit resolution, 175 kSPS per channel, and 5.2 us conversion time, the device comfortably digitises PWM-modulated waveforms above 50 kHz. Its single 5 V supply simplifies board design, while the parallel interface streams samples directly into a DSP or MCU running a Clarke/Park transform.
موصى به
Multi-Axis Inertial Measurement & IMU Front-Ends
Inertial measurement requires simultaneous capture of two or more sensor axes to avoid skew error. The AD7863ARSZ-10REEL samples two accelerometer/gyroscope outputs in lockstep on a single CONVST edge, eliminating inter-axis timing distortion. Its integrated 2.5 V reference removes drift uncertainty, and 14-bit resolution provides sufficient dynamic range for vibration analysis on MEMS accelerometers producing 0-2.5 V outputs.
موصى به
Industrial Data Acquisition & Process Control
Factory automation systems digitise multiple 4-20 mA or 0-10 V transducer signals at hundreds of Hz. The AD7863ARSZ-10REEL handles four analog inputs (two channels of two mux'd inputs) at 175 kSPS - far above typical industrial loop rates - leaving headroom for oversampling and digital filtering. The parallel bus interfaces cleanly to FPGAs/ASICs implementing channel aggregation, and the SSOP-28 footprint suits compact PLC analog input cards.
موصى به
Medical Patient Monitoring (ECG, EEG Front-End)
Medical instrumentation demands simultaneous capture of multiple biopotential channels to preserve waveform phase and timing relationships critical for diagnostic algorithms. The AD7863ARSZ-10REEL's two-channel simultaneous sampling, 14-bit resolution, and 5.2 us conversion time suit ECG/EEG front-ends digitising signals in the 0.05 Hz to 1 kHz band. The low 50 mW power dissipation helps manage thermal load in bedside monitors.
موصى به
Test & Measurement Instrumentation
Bench-top instruments such as oscilloscope front-ends and power analysers need synchronised dual-channel acquisition. The AD7863ARSZ-10REEL delivers two matched 14-bit samples per CONVST cycle, with the integrated 2.5 V reference reducing calibration burden. The parallel bus streams data directly to a display controller FPGA. Operating across -40C to +85C, the part is suitable for laboratory and field-portable test equipment.
موصى به
Uninterruptible Power Supply (UPS) Monitoring
UPS and inverter systems monitor AC mains voltage and current to compute true RMS power and detect faults. The AD7863ARSZ-10REEL samples voltage and current waveforms simultaneously at 175 kSPS, allowing reconstruction of the full 50/60 Hz waveform plus harmonics up to the kHz range. The single 5 V supply matches the digital logic rails common in UPS controllers, simplifying power architecture.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ AD7863ARSZ-10REEL — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | AD7863ARSZ-10REEL7 | AD7863ARSZ-10 | AD7863ARSZ-2REEL | AD7863ARSZ-3 |
|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 14 bit | 14 bit | 14 bit | 14 bit | 14 bit |
| Channels (simultaneous sampling) | 2 | 2 | 2 | 2 | 2 |
| Internal Reference | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V |
| Supply Voltage | 5 V single | 5 V single | 5 V single | 5 V single | 5 V single |
| Reel/Packaging | 13-inch T&R | 7-inch T&R | Tube | 13-inch T&R | Tube |
أبرز الفروقات
- True simultaneous dual-channel sampling on a single CONVST edge (مقابلGeneric dual-channel ADCs that channel-multiplex in series)
- Integrated 2.5 V reference and matched track/hold amplifiers (مقابلDiscrete ADC + external reference designs)
- 14-bit parallel bus with simple MCU/FPGA handshake (مقابلSerial-interface SAR ADCs (e.g., SPI-driven parts))
ملاحظات التصميم
Power the AD7863ARSZ-10REEL from a single 5 V supply; use separate analog (VCC) and digital (VDD) pins that should be tied to filtered, decoupled rails. Place 100 nF ceramic bypass capacitors close to each supply pin and a 10 uF tantalum or ceramic bulk cap near the IC. Estimated: at 5 V and 50 mW typical, total supply current is approximately 10 mA - ensure the 5 V regulator has at least 50 mA headroom for transient load steps on VDD during parallel bus activity.
Route analog inputs and reference pins on the inner PCB layers with a continuous ground pour directly beneath the SSOP-28 footprint. Separate AGND and DGND and join them at a single point near the IC's analog ground pin. Keep parallel digital data bus traces (DB0-DB13) away from analog input traces to avoid digital-to-analog coupling; the high-speed parallel bus edges are the primary noise source.
Do not apply analog input voltages outside the AD7863's input common-mode range before the track/hold settles; damage can occur at overvoltage. Always drive CONVST with a clean digital edge - a slow edge can cause inconsistent sampling times between channels and defeat the simultaneous-sampling benefit. Decouple the REFIN/REFOUT pin with at least 100 nF when using the internal reference to filter noise.
معلومات الامتثال
LEAD FREE per digchips datasheet snippet. RoHS compliance indicated by ADI product status. AEC-Q100 not applicable (industrial-grade ADC).
