AD7699BCPZ - 16-Bit 8-Ch 500kSPS SAR ADC | Analog Devices
MPN: AD7699BCPZ ✓ Hoạt độngAD7699BCPZ Tóm tắt
An ADC (analog-to-digital converter) is an electronic component that converts continuous analog signals into discrete digital values for processing by digital systems. The AD7699 is a SAR ADC, which uses a binary search algorithm to approximate the input voltage with high speed and accuracy. SAR ADCs are widely used in data acquisition systems, motor control, and medical instrumentation due to their excellent balance of speed, resolution, and power consumption.
Key features of the AD7699BCPZ include 16-bit resolution with no missing codes, an 8-channel multiplexer with unipolar single-ended, differential (GND sense), and pseudobipolar input modes, and a throughput of 500 kSPS. It offers an INL of ±0.5 LSB typical and ±1.5 LSB maximum (±23 ppm of FSR), ensuring high linearity for precision measurements. The device also features a dynamic range of and operates over a temperature range of -40°C to +125°C.
The AD7699 uses a charge redistribution SAR architecture with an internal track-and-hold circuit, providing accurate sampling without external sample-and-hold components. It includes a flexible serial interface that is compatible with SPI, QSPI, MICROWIRE, and DSPs, simplifying integration with microcontrollers and FPGAs. The device also offers a busy indicator and a conversion result readback feature, enhancing system design flexibility.
Typical applications include multichannel data acquisition systems, industrial process control, medical instrumentation, and battery-powered portable devices. The AD7699's low power consumption and small package make it ideal for these applications, where board space and power efficiency are critical.
When designing with the AD7699BCPZ, ensure proper decoupling of the VDD and VIO pins with 0.1 µF and 10 µF capacitors, and provide a clean reference voltage to achieve specified performance. The analog input range should be set according to the selected input mode, and the reference voltage should be stable and low-noise for optimal SNR.
Bộ thay thế dễ dàng lắp đặt cho AD7699BCPZ — 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 AD7699BCPZ (cùng hình factor và footprint) — khác nhau ở Input Type, Package, Resolution, Architecture, Data Interface.
AD7699BCPZRL7
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7689BCPZ
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
AD7690BCPZRL7
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ADS8339
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MAX1169
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
AD7699BCPZ Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 16 bits |
| Number of Channels | 8 |
| Tỷ lệ lấy mẫu | 500 kSPS |
| Input Type | Single-Ended, Differential, Pseudo-Differential |
| Giao diện | SPI, QSPI, MICROWIRE, DSP |
| Architecture | SAR |
| Điện áp cung cấp | 5 V |
| INL | ±0.5 LSB typical, ±1.5 LSB maximum |
| Hộp | 20-LFCSP (4x4 mm) |
| Nhiệt độ hoạt động | -40°C to +125°C |
| Kiểu lắp đặt | Surface Mount |
| Reference Type | External |
| Number of Inputs | 8 |
| Data Interface | Serial |
| Trạng thái RoHS | Compliant |
Cấu hình chân AD7699BCPZ
| Chân 1 | IN0 — Analog input channel 0 |
| Chân 2 | IN1 — Analog input channel 1 |
| Chân 3 | IN2 — Analog input channel 2 |
| Chân 4 | IN3 — Analog input channel 3 |
| Chân 5 | IN4 — Analog input channel 4 |
| Chân 6 | IN5 — Analog input channel 5 |
| Chân 7 | IN6 — Analog input channel 6 |
| Chân 8 | IN7 — Analog input channel 7 |
| Chân 9 | GND — Ground |
| Chân 10 | VDD — Power supply (5V) |
| Chân 11 | VIO — Digital interface supply |
| Chân 12 | SCK — Serial clock input |
| Chân 13 | SDI — Serial data input |
| Chân 14 | SDO — Serial data output |
| Chân 15 | CNV — Convert input |
| Chân 16 | BUSY — Busy output |
| Chân 17 | REF — Reference input |
| Chân 18 | REFGND — Reference ground |
| Chân 19 | PD — Power-down input |
| Chân 20 | EP — Exposed pad (thermal and ground) |
Ứng dụng tiêu biểu
AD7699BCPZ phù hợp cho 6 Áp dụngs: Multichannel Data Acquisition, Industrial Process Control, Medical Instrumentation, Battery-Powered Portable Devices, Test and Measurement Equipment, Motor Control.
Multichannel Data Acquisition
The AD7699BCPZ's 8-channel multiplexer and 500 kSPS throughput enable simultaneous sampling of multiple analog signals in industrial data acquisition systems. Its 16-bit resolution and low INL (±0.5 LSB typical) ensure accurate measurement of sensor outputs, while the small LFCSP package saves board space. The device's SPI-compatible interface simplifies connection to microcontrollers, and its low power consumption makes it suitable for battery-powered portable data loggers.
Được đề xuất
Industrial Process Control
In industrial process control, the AD7699BCPZ provides precise conversion of analog signals from temperature, pressure, and flow sensors. Its 16-bit resolution and ±1.5 LSB maximum INL ensure accurate monitoring and control. The device's differential input mode with GND sense rejects common-mode noise, improving measurement integrity in noisy industrial environments. The wide operating temperature range (-40°C to +125°C) allows deployment in harsh conditions, and the serial interface supports isolated data transfer using digital isolators.
Được đề xuất
Medical Instrumentation
The AD7699BCPZ is well-suited for medical instrumentation such as patient monitoring and diagnostic equipment. Its 16-bit resolution and low noise performance enable accurate acquisition of biomedical signals like ECG and EEG. The 8-channel multiplexer allows monitoring of multiple physiological parameters with a single ADC, reducing system complexity. The small LFCSP package is ideal for portable medical devices, and the low power consumption extends battery life in wearable monitors.
Được đề xuất
Battery-Powered Portable Devices
The AD7699BCPZ's low power consumption and small footprint make it ideal for battery-powered portable devices such as handheld multimeters and data loggers. Its 500 kSPS sampling rate allows fast measurements while minimizing active time, and the device can be powered down between conversions to save energy. The 8-channel input multiplexer enables monitoring of multiple battery cells or sensor inputs, and the SPI interface is compatible with low-power microcontrollers.
Được đề xuất
Test and Measurement Equipment
In test and measurement equipment, the AD7699BCPZ provides high-speed, high-resolution digitization of analog signals. Its 16-bit resolution and 500 kSPS throughput enable accurate capture of waveforms in oscilloscopes and spectrum analyzers. The device's excellent linearity (±0.5 LSB typical INL) ensures faithful reproduction of input signals, and the flexible input modes accommodate various signal types. The compact LFCSP package allows dense channel integration in multi-channel instruments.
Được đề xuất
Motor Control
The AD7699BCPZ is used in motor control systems to digitize current and voltage feedback signals. Its 8-channel multiplexer allows monitoring of multiple phase currents and DC bus voltage with a single ADC. The 500 kSPS sampling rate is sufficient for high-bandwidth current loops, and the 16-bit resolution provides precise control. The device's differential input mode rejects common-mode noise from motor drives, and its wide temperature range suits industrial motor controllers.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho AD7699BCPZ — 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 | AD7699BCPZRL7 | AD7689BCPZ | AD7690BCPZ | ADS8339 | MAX1169 |
|---|---|---|---|---|---|---|
| Package | 20-LFCSP (4x4 mm) | 20-LFCSP (4x4 mm) | 20-LFCSP (4x4 mm) | 20-LFCSP (4x4 mm) | 20-LFCSP (4x4 mm) | 20-LFCSP (4x4 mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Maxim Integrated |
| Resolution | 16 bits | 16 bits | 16 bits | 16 bits | 16 bits | 16 bits |
| Number of Channels | 8 | 8 | 4 | 1 | 8 | 8 |
| Sampling Rate | 500 kSPS | 500 kSPS | 500 kSPS | 400 kSPS | 500 kSPS | 500 kSPS |
| INL (Max) | ±1.5 LSB | ±1.5 LSB | ±1.5 LSB | ±1.5 LSB | ±2 LSB | ±2 LSB |
| Supply Voltage | 5V | 5V | 5V | 5V | 5V | 5V |
| Interface | SPI, QSPI, MICROWIRE, DSP | SPI, QSPI, MICROWIRE, DSP | SPI, QSPI, MICROWIRE, DSP | SPI, QSPI, MICROWIRE, DSP | SPI | SPI |
Bảo phân biệt quan trọng
- 8-channel multiplexer in a small LFCSP package (vsAD7689BCPZ)
- Higher sampling rate than AD7690 (vsAD7690BCPZ)
- Lower INL than cross-brand alternatives (vsADS8339)
Ghi chú thiết kế
Decouple the VDD pin with a 10 µF and 0.1 µF capacitor placed as close to the pin as possible. The VIO pin should be decoupled with a 0.1 µF capacitor to the digital ground. Use a low-noise, low-impedance reference source for the REF pin to achieve specified SNR and INL performance.
For optimal performance, use a solid ground plane and separate analog and digital ground planes if necessary. Route analog inputs away from digital traces to minimize coupling. The exposed pad (EP) should be soldered to the ground plane for thermal and electrical grounding.
Ensure the reference voltage is stable and within the specified range (2.3V to VDD). Avoid driving the analog inputs beyond the supply rails to prevent latch-up. The CNV pin must be low during conversion to avoid corrupting the conversion result. Use a series resistor on the SDO line if the host is not ready to receive data.
Thông tin tuân thủ
RoHS compliant per Analog Devices product page. No AEC-Q100 qualification indicated for this part.
