AD7699BCPZ - 16-Bit 8-Ch 500kSPS SAR ADC | Analog Devices
MPN: AD7699BCPZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.13 | $11.13 |
| 10 | $10.25 | $102.50 |
| 100 | $9.45 | $945.00 |
| 500 | $8.72 | $4,360.00 |
| 1,000 | $8.05 | $8,050.00 |
AD7699BCPZ Overview
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.
Drop-in alternatives for AD7699BCPZ — 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 AD7699BCPZ (same form factor and footprint) — differing in Input Type, Package, Resolution, Architecture, Data Interface.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD7699BCPZRL7
✅ Drop-In📋 Reference alternative (not in catalog)
AD7689BCPZ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
AD7690BCPZRL7
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$17.6 / Unit
View Datasheet →ADS8339
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MAX1169
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
AD7699BCPZ Maximum Ratings & Electrical Characteristics
| Resolution | 16 bits |
| Number of Channels | 8 |
| Sampling Rate | 500 kSPS |
| Input Type | Single-Ended, Differential, Pseudo-Differential |
| Interface | SPI, QSPI, MICROWIRE, DSP |
| Architecture | SAR |
| Supply Voltage | 5 V |
| INL | ±0.5 LSB typical, ±1.5 LSB maximum |
| Package | 20-LFCSP (4x4 mm) |
| Operating Temperature | -40°C to +125°C |
| Mounting Type | Surface Mount |
| Reference Type | External |
| Number of Inputs | 8 |
| Data Interface | Serial |
| RoHS Status | Compliant |
AD7699BCPZ Pin Configuration
| Pin 1 | IN0 — Analog input channel 0 |
| Pin 2 | IN1 — Analog input channel 1 |
| Pin 3 | IN2 — Analog input channel 2 |
| Pin 4 | IN3 — Analog input channel 3 |
| Pin 5 | IN4 — Analog input channel 4 |
| Pin 6 | IN5 — Analog input channel 5 |
| Pin 7 | IN6 — Analog input channel 6 |
| Pin 8 | IN7 — Analog input channel 7 |
| Pin 9 | GND — Ground |
| Pin 10 | VDD — Power supply (5V) |
| Pin 11 | VIO — Digital interface supply |
| Pin 12 | SCK — Serial clock input |
| Pin 13 | SDI — Serial data input |
| Pin 14 | SDO — Serial data output |
| Pin 15 | CNV — Convert input |
| Pin 16 | BUSY — Busy output |
| Pin 17 | REF — Reference input |
| Pin 18 | REFGND — Reference ground |
| Pin 19 | PD — Power-down input |
| Pin 20 | EP — Exposed pad (thermal and ground) |
Typical Applications
AD7699BCPZ is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for AD7699BCPZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 |
Key Differentiators
- 8-channel multiplexer in a small LFCSP package (vs AD7689BCPZ)
- Higher sampling rate than AD7690 (vs AD7690BCPZ)
- Lower INL than cross-brand alternatives (vs ADS8339)
Design Notes
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.
Compliance Information
RoHS compliant per Analog Devices product page. No AEC-Q100 qualification indicated for this part.
