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Analog Devices Inc. AD7699BCPZ
- Part No.:
- AD7699BCPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD7699BCPZ.pdf
- Description:
- IC ADC 16BIT SAR 20LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,793
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Product details
Overview
AD7699BCPZ from Analog Devices is a 16-bit, 8-channel, 500 kSPS PulSAR® successive approximation register (SAR) ADC with internal 4.096 V reference, integrated temperature sensor, and SPI-compatible serial interface. It operates from a single 4.5 V to 5.5 V supply with 1.8 V to 5 V logic interface, delivering ±0.5 LSB typical INL and 91.5 dB SINAD at 20 kHz for precision data acquisition in portable medical and industrial instrumentation.
For engineers reviewing the AD7699BCPZ datasheet, AD7699BCPZ pinout, AD7699BCPZ application, or AD7699BCPZ equivalent, key selection considerations include its 20-lead 4 mm × 4 mm LFCSP package, channel sequencer with selectable one-pole filter, no pipeline delay, and support for unipolar single-ended, differential, and pseudo-bipolar input configurations across eight analog inputs.
Technical Context
The AD7699BCPZ implements a charge redistribution SAR architecture with no pipeline delay, enabling deterministic conversion timing and immediate result availability after CNV rising edge. Its 8-channel multiplexer supports flexible input configuration-unipolar single-ended, differential (GND sense), or pseudo-bipolar-with channel-to-channel crosstalk of −125 dB at 100 kHz.
It integrates an internal bandgap-based 4.096 V reference (±10 ppm/°C drift), a dedicated temperature sensor outputting 283 mV at 25°C with 1 mV/°C sensitivity, and a configurable sequencer that automates scanning across selected channels without host intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full code coverage for high-fidelity signal capture. |
| Throughput | 500 kSPS maximum - enables real-time sampling of signals up to 14 MHz bandwidth (−3 dB) in full-bandwidth mode. |
| INL | ±0.5 LSB typical (±1.5 LSB max) - ensures <±23 ppm FSR linearity error critical for calibration-sensitive applications. |
| SINAD | 91.5 dB at 20 kHz (VREF = 5 V) - delivers >15-bit effective resolution for low-noise sensor and ECG signal digitization. |
| Power @ 500 kSPS | 26 mW - achieves 52 nJ per conversion, supporting battery-powered operation with 50 nA standby current. |
| Analog Inputs | 8-channel MUX with COM pin - allows configurable single-ended, differential, or pseudo-bipolar input referencing for mixed-signal systems. |
| Reference Options | Internal 4.096 V (±10 ppm/°C), external buffered (≤4.096 V), or external direct (0.5 V to VDD) - provides flexibility for accuracy vs. power trade-offs. |
Pinout & Package
AD7699BCPZ is housed in a 20-lead, 4 mm × 4 mm LFCSP (CP-20-10) package with exposed paddle (not internally connected). Pin 1 is located at top-left corner adjacent to VDD; the exposed pad must be soldered to PCB ground plane for thermal and mechanical reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pins 1, 20) | Power supply input | Nominally 4.5–5.5 V; requires 10 µF + 100 nF decoupling for stable SAR conversion performance. |
| REF (Pin 2) | Reference I/O | Outputs internal 4.096 V reference or buffers external REFIN; needs 10 µF local decoupling for low-drift operation. |
| REFIN (Pin 3) | Internal ref output / buffer input | Provides unbuffered bandgap voltage (2.3 V) or accepts 0.5–4.096 V buffered reference source. |
| GND (Pins 4, 5) | Power ground | Dual ground pins minimize ground bounce during high-speed conversions and reduce digital noise coupling. |
| IN0–IN7 (Pins 16–19, 6–9) | Analog input channels | Eight fully differential-capable inputs; each can be configured as single-ended, differential, or pseudo-bipolar via sequencer control. |
| COM (Pin 10) | Common-mode reference | Sets common-mode point for all channels to 0 V or VREF/2 V, enabling true differential or bipolar measurement modes. |
| CNV (Pin 11) | Conversion trigger | Rising edge initiates conversion; held high during conversion enables busy indicator on SDO pin. |
| DIN/SCK/SDO (Pins 12–14) | SPI serial interface | Full-duplex MSB-first SPI compatible with DSP, QSPI, MICROWIRE; supports read-during-conversion for minimal latency. |
| VIO (Pin 15) | Digital I/O supply | Independent 1.8–5 V logic supply - isolates ADC core from host voltage variations and enables mixed-voltage system interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay SAR architecture | Enables deterministic timing with 1.6 µs conversion time and immediate result availability - eliminates latency uncertainty in closed-loop control. |
| Integrated temperature sensor | Monitors die temperature with 1 mV/°C sensitivity and 283 mV output at 25°C - supports self-calibration and thermal derating without external components. |
| Selectable one-pole filter | Configurable digital filter reduces aliasing and improves SNR for oversampled low-frequency signals without external RC networks. |
| Channel sequencer | Automatically cycles through user-defined channel sets (e.g., IN0–IN3) with programmable scan order - offloads host MCU and simplifies firmware. |
| Low-power scalable operation | Dissipates only 5.2 µW at 100 SPS and 50 nA standby - extends battery life in portable ECG, seismic, and IoT edge sensors. |
Applications
| ECG/EKG Monitoring Systems | Portable Power Line Analyzers |
|---|---|
Use Scenario: Real-time acquisition of low-amplitude, high-impedance biopotential signals from patient electrodes with simultaneous lead-off detection. IC Role / Device Role / Timing Role: Primary 16-bit SAR ADC digitizing 8-channel analog front-end outputs; sequencer scans leads while internal reference ensures consistent gain across measurements. Use Value: ±0.5 LSB INL and 91.5 dB SINAD preserve diagnostic fidelity of ST-segment morphology; 50 nA standby current enables multi-day battery operation in handheld units. |
Use Scenario: Simultaneous sampling of voltage and current waveforms across three-phase AC distribution lines for harmonic analysis and power quality monitoring. IC Role / Device Role / Timing Role: Multichannel acquisition engine capturing synchronized samples at 500 kSPS with precise inter-channel timing alignment via shared CNV and sequencer. Use Value: −125 dB channel crosstalk prevents leakage between phases; internal 4.096 V reference eliminates external reference drift errors in field-deployed meters. |
| Seismic Data Acquisition Nodes | Industrial Process Control Sensors |
Use Scenario: Low-power, high-resolution digitization of geophone and accelerometer outputs in remote, battery- or solar-powered field nodes. IC Role / Device Role / Timing Role: Core ADC in distributed sensing node; temperature sensor enables on-board thermal compensation of piezoelectric transducer drift. Use Value: 26 mW active power and 50 nA standby allow >1-year deployment on AA batteries; 14 MHz input bandwidth captures broadband seismic events up to Nyquist limit. |
Use Scenario: High-accuracy measurement of thermocouple, RTD, and strain gauge outputs in PLC analog input modules requiring long-term stability. IC Role / Device Role / Timing Role: Precision front-end ADC with integrated reference and sequencer managing multiple sensor types across 8 input channels. Use Value: ±10 ppm/°C reference drift and ±0.3 ppm/°C gain/offset drift ensure <0.1% total error over −40°C to +85°C industrial temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7689BCPZ | Same 16-bit, 8-channel SAR architecture but rated for 250 kSPS max; lacks internal temperature sensor and has higher ±2.5 LSB INL (WLCSP). | Better suited for cost-sensitive, lower-throughput systems where thermal monitoring is unnecessary. | Choose AD7689BCPZ when throughput ≤250 kSPS suffices and temperature compensation is handled externally. |
| AD7699BCBZ | Identical electrical specs and functionality, but packaged in 20-ball 2.4 mm × 2.4 mm WLCSP instead of 4 mm × 4 mm LFCSP. | Required for ultra-compact PCB layouts where board space is constrained, though thermal dissipation differs due to smaller package. | Choose AD7699BCBZ only when footprint reduction outweighs thermal management complexity and rework challenges. |
Compared with AD7699BCPZ, AD7689BCPZ trades throughput and on-die sensing for lower cost and power at reduced speed, while AD7699BCBZ offers identical performance in a miniature WLCSP - making AD7699BCPZ optimal for designs prioritizing thermal robustness, ease of assembly, and integrated diagnostics in standard industrial form factors.
Availability
AD7699BCPZ is available at Aetrix Electronics and suitable for battery-powered medical devices, portable power analyzers, and industrial process control systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AD7699BCPZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide.
The AD7699 belongs to Analog Devices' PulSAR® family of precision SAR ADCs, engineered specifically for multichannel, low-power, high-accuracy data acquisition in portable instrumentation, energy monitoring, and industrial automation.
FAQ
What is the maximum sample rate supported by the AD7699BCPZ?
The AD7699BCPZ supports a maximum throughput of 500 kSPS in full-bandwidth mode, with conversion time of 1.6 µs (LFCSP) and acquisition time of 400 ns. At this rate, it achieves 91.5 dB SINAD and maintains ±0.5 LSB typical INL - verified across −40°C to +85°C operating range with internal 4.096 V reference enabled.
Does the AD7699BCPZ include an internal voltage reference?
Yes, the AD7699BCPZ integrates a factory-trimmed 4.096 V internal reference with ±10 ppm/°C temperature drift and 5 ms turn-on settling time (with 10 µF capacitor). This reference is accessible at the REF pin and can be disabled to use external buffered or direct references - all configurations are supported without hardware changes.
How many analog input channels does the AD7699BCPZ support, and what input configurations are available?
The AD7699BCPZ supports eight analog input channels (IN0–IN7) with a flexible multiplexer that enables unipolar single-ended, differential (GND sense), or pseudo-bipolar configurations. The COM pin sets common-mode reference to 0 V or VREF/2 V, and the channel sequencer automates scanning across user-selected channels without host CPU intervention.
What package type is used for the AD7699BCPZ, and what are its thermal characteristics?
The AD7699BCPZ uses a 20-lead 4 mm × 4 mm LFCSP (CP-20-10) package with exposed paddle. Its thermal resistance is θJA = 47.6°C/W and θJC = 4.4°C/W under JEDEC 2S2P PCB conditions. The exposed paddle must be soldered to the PCB ground plane to ensure reliable thermal dissipation and mechanical mounting.
Can the AD7699BCPZ operate with different digital interface voltages?
Yes, the AD7699BCPZ features a dedicated VIO pin supporting 1.8 V to 5 V logic interface voltage, independent of the 4.5 V to 5.5 V VDD analog supply. This allows seamless integration with 1.8 V, 2.5 V, 3.3 V, or 5 V microcontrollers and FPGAs while maintaining full SPI compatibility with DSP, QSPI, and MICROWIRE protocols.
AD7699BCPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PulSAR®
- Package/Case:
- 20-WFQFN Exposed Pad, CSP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 500k
- Number of Inputs:
- 8
- Input Type:
- Differential, Pseudo-Differential, Single Ended
- Data Interface:
- SPI, DSP
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- Temperature Sensor
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 20-LFCSP (4x4)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7699BCPZ FAQ
1.How can I place an order for AD7699BCPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7699BCPZ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD7699BCPZ reliable?
The price and inventory of AD7699BCPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7699BCPZ is usually 5 days.
3.What payment methods are accepted for AD7699BCPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7699BCPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7699BCPZ?
AD7699BCPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7699BCPZ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD7699BCPZ?
For technical support, including AD7699BCPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7699BCPZ requirements.
6.How does Aetrix verify that AD7699BCPZ is sourced from the original manufacturer or authorized distributors?
All AD7699BCPZ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD7699BCPZ meets industry standards.
7.What is the process for return or replacement of AD7699BCPZ?
All AD7699BCPZ units undergo pre-shipment inspection (PSI). If there is an issue with AD7699BCPZ, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD7699BCPZ part is unused and in its original packaging.
Return procedure for AD7699BCPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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