AD7863ARSZ-10REEL - 14-Bit 175kSPS Dual Simultaneous-Sampling ADC | ADI
MPN: AD7863ARSZ-10REEL ✗ Cuối đờiAD7863ARSZ-10REEL Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho AD7863ARSZ-10REEL — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với AD7863ARSZ-10REEL (cùng hình factor và footprint) — khác nhau ở Conversion Time, Input Type, Internal Reference, Number of Channels, Package.
AD7863ARSZ-10REEL7
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7863ARSZ-10
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7863ARSZ-2REEL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7863ARSZ-3
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7863ARSZ-10REEL Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 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 |
| Điện áp cung cấp | 5 V single supply |
| Power Consumption | 50 mW typical |
| Internal Reference | 2.5 V (integrated) |
| Giao diện | High-speed parallel |
| Track/Hold Amplifiers | 2 (integrated, matched) |
| Nhiệt độ hoạt động | -40C to +85C |
| Hộp | 28-pin SSOP (5.30 mm body) |
| Kiểu lắp đặt | 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) |
Cấu hình chân AD7863ARSZ-10REEL
| Chân 1 | VA1 — Analog input A, channel 1 |
| Chân 2 | VA2 — Analog input A, channel 2 |
| Chân 3 | VB1 — Analog input B, channel 1 |
| Chân 4 | VB2 — Analog input B, channel 2 |
| Chân 5 | AGND — Analog ground |
| Chân 6 | REFIN/REFOUT — Internal 2.5 V reference input/output |
| Chân 7 | A0 — Channel select input (logic low = ch1, high = ch2) |
| Chân 8 | CONVST — Conversion start (active edge initiates both ADCs) |
| Chân 9 | BUSY — Conversion in progress indicator (active high) |
| Chân 10 | CS — Chip select (active low) |
| Chân 11 | RD — Read enable (active low) |
| Chân 12 | DB13 — Data bit 13 (MSB) |
| Chân 13 | DB12 — Data bit 12 |
| Chân 14 | DB11 — Data bit 11 |
| Chân 15 | DB10 — Data bit 10 |
| Chân 16 | DB9 — Data bit 9 |
| Chân 17 | DB8 — Data bit 8 |
| Chân 18 | DB7 — Data bit 7 |
| Chân 19 | DB6 — Data bit 6 |
| Chân 20 | DB5 — Data bit 5 |
| Chân 21 | DB4 — Data bit 4 |
| Chân 22 | DB3 — Data bit 3 |
| Chân 23 | DB2 — Data bit 2 |
| Chân 24 | DB1 — Data bit 1 |
| Chân 25 | DB0 — Data bit 0 (LSB) |
| Chân 26 | DGND — Digital ground |
| Chân 27 | VDD — Digital 5 V supply |
| Chân 28 | VCC — Analog 5 V supply |
Ứng dụng tiêu biểu
AD7863ARSZ-10REEL phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho AD7863ARSZ-10REEL — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- True simultaneous dual-channel sampling on a single CONVST edge (vsGeneric dual-channel ADCs that channel-multiplex in series)
- Integrated 2.5 V reference and matched track/hold amplifiers (vsDiscrete ADC + external reference designs)
- 14-bit parallel bus with simple MCU/FPGA handshake (vsSerial-interface SAR ADCs (e.g., SPI-driven parts))
Ghi chú thiết kế
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.
Thông tin tuân thủ
LEAD FREE per digchips datasheet snippet. RoHS compliance indicated by ADI product status. AEC-Q100 not applicable (industrial-grade ADC).
