AD7813YRZ-REEL - 10-Bit 400 kSPS SAR ADC, 16-SOIC | Analog Devices
MPN: AD7813YRZ-REEL ✓ Hoạt độngAD7813YRZ-REEL Tóm tắt
A successive-approximation ADC is a precision data-conversion architecture that uses an internal binary-weighted capacitor DAC and a comparator to resolve one bit per clock cycle. Within the broader converter taxonomy, a SAR ADC sits below pipelined and sigma-delta ADCs in raw sample-rate capability but above them in latency determinism: every conversion completes in a fixed number of cycles (here 10), making the AD7813 well suited to multiplexed data-acquisition systems and event-driven DSP sampling where predictable, low-latency conversion is more valuable than the highest possible throughput.
Key electrical features include 400 kSPS maximum throughput, 2.7 V–5.5 V single-supply operation, an input range of 0 V to VREF (where VREF is the supply on the REF pin), low power consumption (typically around 10 mW at 5 V), and guaranteed operation over the -40 °C to +105 °C industrial temperature range. The 8-/10-bit software-selectable resolution adds flexibility when SNR requirements vary between channels. The on-chip clock oscillator eliminates the need for an external ADC clock, simplifying PCB layout in space-constrained designs.
Typical applications include industrial process control front-ends, portable instrumentation and battery-powered data loggers, DSP front-end signal conditioning, motor control feedback loops, and multiplexed data-acquisition systems. The wide supply range makes the part directly compatible with both 3.3 V and 5 V microcontrollers without level translation. When designing the analog input path, place a small anti-alias RC filter (typically 100 Ω + 1 nF) ahead of the analog input pin and keep the digital return currents physically separated from the analog ground pour to preserve the converter's SNR.
Bộ thay thế dễ dàng lắp đặt cho AD7813YRZ-REEL — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
AD7813YRZ-REEL7
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7813YRZ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7813YR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7813YR-REEL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7813YRZ-REEL Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 10 bit (8-/10-bit software-selectable) |
| Architecture | SAR (Successive Approximation) |
| Number of Channels | 1 |
| Maximum Sample Rate | 400 kSPS |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Analog Input Voltage Range | 0 V to VREF |
| Điện áp tham chiếu | Externally supplied on REF pin (typically VDD) |
| Conversion Time | 2.3 µs (typical) |
| Digital Interface | 8-bit-wide parallel |
| Khoảng nhiệt độ hoạt động | -40 °C to +105 °C |
| Hộp | 16-SOIC (R-16), 0.154 inch / 3.90 mm width |
| Kiểu lắp đặt | Surface Mount |
| Packing Method | Tape & Reel |
| Screening Level | Industrial |
| Trạng thái RoHS | Compliant |
Cấu hình chân AD7813YRZ-REEL
| Chân 1 | DB0 — Parallel data output bit 0 (LSB) |
| Chân 2 | DB1 — Parallel data output bit 1 |
| Chân 3 | DB2 — Parallel data output bit 2 |
| Chân 4 | DB3 — Parallel data output bit 3 |
| Chân 5 | DB4 — Parallel data output bit 4 |
| Chân 6 | DB5 — Parallel data output bit 5 |
| Chân 7 | DB6 — Parallel data output bit 6 |
| Chân 8 | DB7 — Parallel data output bit 7 (MSB in 8-bit mode) |
| Chân 9 | AGND — Analog ground |
| Chân 10 | REF — Reference voltage input |
| Chân 11 | AIN — Analog input |
| Chân 12 | VDD — Positive supply (2.7 V to 5.5 V) |
| Chân 13 | CONVST — Conversion start input |
| Chân 14 | CS — Chip select (active low) |
| Chân 15 | RD — Read input (active low) |
| Chân 16 | DGND — Digital ground |
Ứng dụng tiêu biểu
AD7813YRZ-REEL phù hợp cho 6 Áp dụngs: Industrial Process Control Front-End, Portable Data Acquisition / Data Logger, DSP Front-End Signal Conditioning, Motor Control Feedback Loop, Multiplexed Data Acquisition System, Audio-Bandwidth Signal Digitization.
Industrial Process Control Front-End
The AD7813YRZ-REEL's -40 °C to +105 °C industrial temperature rating, single 2.7 V–5.5 V supply, and 400 kSPS throughput make it ideal for industrial process-control front-ends. Placed on a multiplexed analog input board, the SAR ADC deterministically samples 4 mA–20 mA loop signals, thermocouple amplifier outputs, or strain-gauge bridge signals at a fixed 2.3 µs conversion time, simplifying downstream DSP integration. The wide supply range lets the same PCB accept both 3.3 V and 5 V logic, reducing SKU complexity. Best paired with the AD620 instrumentation amp for low-level sensor conditioning.
Được đề xuất
Portable Data Acquisition / Data Logger
Low power consumption (typically ~10 mW at 5 V) and a wide 2.7 V–5.5 V supply make the AD7813YRZ-REEL well suited to battery-powered data loggers and handheld instruments. The integrated on-chip clock oscillator eliminates the external ADC timing crystal, shrinking BOM count and PCB area. The 8-/10-bit software-selectable resolution allows designers to trade SNR for sample-rate during low-power sleep cycles, extending battery life. Pair with an MSP430 or STM32 microcontroller and a CR2032 / Li-ion cell for weeks-long field deployments.
Được đề xuất
DSP Front-End Signal Conditioning
The AD7813YRZ-REEL's deterministic SAR latency (a fixed 10-cycle conversion) and 8-bit-wide parallel interface make it a strong match for DSP front-ends where predictable sampling is critical. Place the ADC between the analog sensor stage and a DSP such as the ADSP-21xx or TI TMS320 series; the parallel bus eliminates bit-banged SPI overhead, freeing DSP cycles for FFT/filter math. The 400 kSPS ceiling cleanly covers audio-bandwidth (≤20 kHz Nyquist) and vibration-analysis applications with substantial oversampling margin.
Được đề xuất
Motor Control Feedback Loop
In brushless DC (BLDC) and stepper motor control loops, the AD7813YRZ-REEL samples current-sense amplifier outputs with deterministic latency, supporting torque-loop bandwidths above 50 kHz. The 400 kSPS throughput handles multi-phase current sampling within a single PWM cycle, while the 2.7 V–5.5 V range accepts 3.3 V logic from modern MCUs and 5 V from legacy gate drivers. Place a 100 Ω + 1 nF anti-alias RC ahead of AIN and keep digital return currents separated from analog ground for clean current-sense measurement.
Được đề xuất
Multiplexed Data Acquisition System
When paired with an external analog multiplexer, the AD7813YRZ-REEL becomes the core of a multi-channel data-acquisition board handling 8, 16, or more channels sequentially. The 400 kSPS throughput yields ~50 kSPS per channel at 8 channels - more than adequate for thermocouple, RTD, and process-variable monitoring. The 8-bit-wide parallel interface simplifies FIFO buffering to a host MCU. Add the ADG708 (8:1 mux) for low-leakage channel switching and the AD8610 op-amp for high-impedance input buffering.
Được đề xuất
Audio-Bandwidth Signal Digitization
Although the AD7813YRZ-REEL is a general-purpose SAR ADC rather than an audio codec, its 400 kSPS throughput and 10-bit resolution are sufficient for audio-bandwidth (≤20 kHz Nyquist) digitization in intercom systems, voice-recognition front-ends, and acoustic monitoring. The 2.3 µs conversion time provides deterministic SAR latency - useful when phase relationships between samples matter. Place the ADC after a microphone preamp (such as the AD797 or AD8021) and an anti-alias low-pass filter at 20 kHz.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho AD7813YRZ-REEL — 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 | AD7813YRZ-REEL7 | AD7813YRZ | AD7813YR | AD7813YR-REEL |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 16-SOIC (R-16) | 16-SOIC (R-16) - same | 16-SOIC (R-16) - same | 16-SOIC (R-16) - same | 16-SOIC (R-16) - same |
| Resolution | 10 bit (8-/10-bit selectable) | 10 bit (8-/10-bit selectable) - same | 10 bit (8-/10-bit selectable) - same | 10 bit (8-/10-bit selectable) - same | 10 bit (8-/10-bit selectable) - same |
| Maximum Sample Rate | 400 kSPS | 400 kSPS - same | 400 kSPS - same | 400 kSPS - same | 400 kSPS - same |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V - same | 2.7 V to 5.5 V - same | 2.7 V to 5.5 V - same | 2.7 V to 5.5 V - same |
| Architecture | SAR | SAR - same | SAR - same | SAR - same | SAR - same |
| Digital Interface | 8-bit parallel | 8-bit parallel - same | 8-bit parallel - same | 8-bit parallel - same | 8-bit parallel - same |
| Packing Method | Tape & Reel, ~1000 pcs | Tape & Reel, ~500 pcs | Tube | Tube | Tape & Reel (non-Z) |
| Operating Temperature | -40 °C to +105 °C | -40 °C to +105 °C - same | -40 °C to +105 °C - same | -40 °C to +105 °C - same | -40 °C to +105 °C - same |
Bảo phân biệt quan trọng
- Wide single-supply range with on-chip clock oscillator (vsAD7476ARTZ-REEL7)
- 8-/10-bit software-selectable resolution (vsAD7265BCPZ-REEL)
- Parallel interface for deterministic low-latency sampling (vsAD7264BSTZ-5-RL7)
Ghi chú thiết kế
Separate analog and digital ground returns: tie AGND (pin 9) and DGND (pin 16) at a single point near the ADC to avoid ground-loop noise. Place the 0.1 µF VDD decoupling capacitor within 3 mm of the VDD pin, and a 10 µF bulk capacitor on the supply rail. Route parallel data bus DB0–DB7 over a continuous ground plane and avoid running them under the analog input trace.
Add a 100 Ω resistor and 1 nF capacitor anti-alias filter in front of AIN (pin 11) to limit input bandwidth to the Nyquist frequency. Keep the REF pin (pin 10) bypassed with a 10 µF tantalum in parallel with a 0.1 µF ceramic. Drive REF from a low-noise source such as the ADR01 or TL431 - noise on REF couples directly into conversion results.
Do not leave CONVST (pin 13) floating: tie it to the MCU's control GPIO or through a defined pull-up. Do not exceed VDD on the analog input AIN, as over-voltage can damage the sample-and-hold switches. Ensure CS and RD edges align with the timing diagram in the AD7813 datasheet - violations cause bus contention and corrupted readings.
Thông tin tuân thủ
RoHS compliant per Analog Devices product page. Industrial screening level -40 °C to +105 °C. Not AEC-Q100 qualified - this is a general-purpose industrial ADC, not an automotive-grade part.
