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Analog Devices Inc. AD7699BCPZRL7
- Part No.:
- AD7699BCPZRL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD7699BCPZRL7.pdf
- Description:
- IC ADC 16BIT SAR 20LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,795
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Product details
Overview
AD7699BCPZRL7 from Analog Devices is a 16-bit, 8-channel, 500 kSPS successive approximation register (SAR) ADC with integrated 4.096 V reference, internal 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 compatibility, delivers ±0.5 LSB typical INL, 91.5 dB SINAD at 20 kHz, and supports unipolar, differential, and pseudo-bipolar input configurations for precision data acquisition in portable medical and industrial systems.
For engineers reviewing the AD7699BCPZRL7 datasheet, AD7699BCPZRL7 pinout, AD7699BCPZRL7 application, or AD7699BCPZRL7 equivalent, this page provides verified technical context, package-specific pin functions, real-world use cases, and validated alternative options - all grounded in Rev. G datasheet specifications and LFCSP-20 implementation details.
Technical Context
The AD7699BCPZRL7 implements a charge redistribution SAR architecture with no pipeline delay, enabling immediate access to conversion results. Its 8-channel multiplexer supports configurable input modes (unipolar single-ended, differential with ground sense, pseudo-bipolar), and includes a built-in sequencer for automatic channel scanning.
It integrates a low-drift 4.096 V bandgap reference (±10 ppm/°C drift), selectable one-pole filter, busy indicator, and internal temperature sensor (283 mV at 25°C, 1 mV/°C sensitivity). Power scaling is explicit: 26 mW at 500 kSPS, 5.2 μW at 100 SPS, and 50 nA standby current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full code coverage across full-scale range. |
| Throughput | 500 kSPS maximum - enables high-speed multichannel sampling without pipeline latency. |
| INL | ±0.5 LSB typical (±1.5 LSB max) - ensures <±0.0023% FSR absolute accuracy for calibration-critical applications. |
| SINAD | 91.5 dB at 20 kHz (VREF = 5 V) - supports >15-bit effective resolution in audio-band signal capture. |
| Analog Input Range | 0 V to VREF (unipolar), −VREF/2 to +VREF/2 (bipolar) - flexible rail-to-rail referenced operation with VREF up to VDD. |
| Reference | Internal 4.096 V ±10 ppm/°C - eliminates external reference component count while maintaining stability over −40°C to +85°C. |
| Power Dissipation | 26 mW at 500 kSPS, 50 nA standby - enables battery-powered operation with rapid wake/sleep transitions. |
Pinout & Package
The AD7699BCPZRL7 is housed in a 20-lead 4 mm × 4 mm LFCSP (CP-20-101) with exposed paddle (not internally connected). Pin 1 is located at top-left per JEDEC-standard marking; the EPAD must be soldered to PCB ground 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 - powers core ADC, reference, and sequencer. |
| REF (Pin 2) | Reference output/input | Delivers 4.096 V when internal ref enabled; accepts buffered external reference up to VDD − 0.5 V - primary voltage reference node. |
| REFIN (Pin 3) | Internal reference output / buffer input | Provides unbuffered bandgap voltage (2.3 V); used to drive REF via internal buffer - requires 0.1 µF local decoupling. |
| GND (Pins 4, 5) | Power ground | Dual ground pins reduce return path impedance - critical for noise-sensitive analog and digital domains. |
| IN0–IN7 (Pins 16–19, 6–9) | Analog input channels | Eight fully differential-capable inputs; support single-ended, differential, or pseudo-bipolar configuration via sequencer control. |
| COM (Pin 10) | Common-mode reference | Defines common point for all analog inputs - set to GND (unipolar) or VREF/2 (bipolar) per mode selection. |
| CNV (Pin 11) | Conversion trigger | Rising edge initiates conversion; held high during conversion enables busy indicator on SDO - synchronizes acquisition timing. |
| DIN/SCK/SDO (Pins 12–14) | SPI serial interface | Full-duplex 3-wire SPI (MSB-first); compatible with SPI, QSPI, MICROWIRE, DSP - supports read during conversion. |
| VIO (Pin 15) | Digital I/O supply | Independent 1.8–5 V logic interface supply - isolates ADC core from host voltage domain and reduces digital switching noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay SAR architecture | Enables deterministic, zero-latency conversion completion - essential for closed-loop control and real-time triggering. |
| Integrated 4.096 V reference with ±10 ppm/°C drift | Eliminates need for external precision reference IC and associated layout area, BOM cost, and calibration overhead. |
| Configurable 8-channel MUX with sequencer | Automatically cycles through selected channels without host intervention - reduces firmware complexity in multi-sensor systems. |
| Internal temperature sensor (283 mV @ 25°C, 1 mV/°C) | Provides system-level thermal monitoring without external sensor - usable as diagnostic or compensation input via INx channel. |
| 1.8 V to 5 V logic interface (VIO) | Allows direct interfacing with low-voltage microcontrollers (e.g., ARM Cortex-M0+) without level shifters - simplifies mixed-supply designs. |
| 50 nA standby current | Supports ultra-low-power sleep modes in battery-operated devices - extends operational life between charges or replacements. |
Applications
| ECG/EKG Monitoring System | Portable Power Line Monitor |
|---|---|
Use Scenario: Simultaneous acquisition of multiple biopotential signals (RA, LA, LL, V1–V6) with high common-mode rejection and low noise floor. IC Role / Device Role / Timing Role: Primary 16-bit multichannel ADC capturing lead voltages at ≥500 SPS with synchronized sampling and internal reference stability. Use Value: Delivers 91.5 dB SINAD and ±0.5 LSB INL to resolve microvolt-level cardiac waveforms without external reference drift compensation. |
Use Scenario: Real-time measurement of voltage, current, and harmonic content on 50/60 Hz AC distribution lines in handheld testers. IC Role / Device Role / Timing Role: High-accuracy, low-power ADC front-end digitizing conditioned analog outputs from isolation amplifiers and CT sensors. Use Value: 500 kSPS throughput and 14 MHz input bandwidth enable oversampling for precise RMS and THD calculation up to 20th harmonic. |
| Seismic Data Acquisition Node | Industrial Process Controller I/O Module |
Use Scenario: Battery-powered field node acquiring low-frequency geophone and accelerometer signals across 8 channels with minimal self-heating. IC Role / Device Role / Timing Role: Low-noise, low-drift ADC with internal temperature sensor used for both signal digitization and thermal drift correction. Use Value: 93.3 dB dynamic range and 5.2 μW power at 100 SPS extend battery life while preserving sub-LSB resolution for weak seismic events. |
Use Scenario: Modular PLC analog input card requiring calibrated, isolated measurements of 4–20 mA, thermocouple, and RTD signals. IC Role / Device Role / Timing Role: Precision ADC engine handling multiplexed sensor inputs with programmable gain and filtering via external op-amps. Use Value: Channel sequencer and selectable one-pole filter simplify firmware design and reduce external component count in multi-sensor industrial modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7689BCPZRL7 | 16-bit, 8-channel, 250 kSPS; no internal reference; requires external 4.096 V reference; same LFCSP-20 package. | Lacks integrated reference and temperature sensor - demands additional reference IC and calibration effort. | Select when lower throughput suffices and external reference control is preferred for tighter system-level drift budgeting. |
| AD7699BCPZ-RL | Identical electrical specs and pinout; differs only in tape-and-reel packaging (RL7 = 1500-piece reel, RL = unspecified quantity reel). | No functional or performance difference - purely logistics variant for volume procurement. | Choose AD7699BCPZ-RL for non-standard reel sizes or legacy BOM alignment; otherwise AD7699BCPZRL7 is standard production version. |
Compared with AD7689BCPZRL7, the AD7699BCPZRL7 adds integrated reference and temperature sensing at no pin-count or size penalty, reducing BOM and layout complexity. Versus AD7699BCPZ-RL, it offers guaranteed 1500-unit reel packaging for automated assembly consistency.
Availability
AD7699BCPZRL7 is available at Aetrix Electronics and suitable for battery-powered equipment, medical instrumentation (ECG/EKG), and seismic data acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for AD7699BCPZRL7 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.
The AD7699 belongs to Analog Devices' PulSAR® family of precision SAR ADCs, designed specifically for low-power, multichannel data acquisition in portable, medical, and industrial instrumentation where accuracy, integration, and energy efficiency are critical.
FAQ
What is the maximum sampling rate supported by the AD7699BCPZRL7?
The AD7699BCPZRL7 supports a maximum throughput of 500 kSPS in full-bandwidth mode. This is achieved using read-during-conversion or read-spanning-conversion timing modes, particularly with the LFCSP package. The device maintains 16-bit no-missing-codes resolution and 91.5 dB SINAD at this rate, making it suitable for demanding multichannel acquisition tasks where speed and precision are both required.
Does the AD7699BCPZRL7 require an external reference voltage?
No, the AD7699BCPZRL7 does not require an external reference voltage because it integrates a precision 4.096 V internal reference with ±10 ppm/°C temperature drift. This reference is available on the REF pin and can be used directly. However, the device also supports external reference configurations - either buffered (via REFIN) or unbuffered - for applications needing higher accuracy or custom voltage levels.
How is the internal temperature sensor accessed in the AD7699BCPZRL7?
The internal temperature sensor in the AD7699BCPZRL7 outputs a voltage of 283 mV at 25°C with a sensitivity of 1 mV/°C. It is connected to a dedicated multiplexer input and appears as one of the eight analog channels (typically mapped to INx). To read it, configure the channel sequencer to include that input, then perform a standard conversion - the result corresponds linearly to die temperature across −40°C to +85°C.
What digital interface protocols are compatible with the AD7699BCPZRL7?
The AD7699BCPZRL7 features a 3-wire SPI-compatible serial interface supporting SPI, QSPI, MICROWIRE, and DSP serial protocols. It uses separate DIN, SCK, and SDO lines with MSB-first transmission and supports read operations during or spanning conversion cycles. The independent VIO supply (1.8 V to 5 V) ensures interoperability with diverse host controllers without level-shifting circuitry.
What is the power consumption of the AD7699BCPZRL7 at 100 SPS?
At 100 SPS, the AD7699BCPZRL7 consumes just 5.2 μW - reflecting its scalable power architecture. This ultra-low operating point is achieved by dynamically reducing internal clock rates and bias currents while maintaining full 16-bit resolution and linearity. Combined with 50 nA standby current, this enables years of operation on coin-cell batteries in intermittent-sampling applications like environmental sensors or predictive maintenance nodes.
AD7699BCPZRL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- PulSAR®
- Package/Case:
- 20-WFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- 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:
- -
AD7699BCPZRL7 FAQ
1.How can I place an order for AD7699BCPZRL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7699BCPZRL7 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 AD7699BCPZRL7 reliable?
The price and inventory of AD7699BCPZRL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7699BCPZRL7 is usually 5 days.
3.What payment methods are accepted for AD7699BCPZRL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7699BCPZRL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7699BCPZRL7?
AD7699BCPZRL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7699BCPZRL7 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 AD7699BCPZRL7?
For technical support, including AD7699BCPZRL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7699BCPZRL7 requirements.
6.How does Aetrix verify that AD7699BCPZRL7 is sourced from the original manufacturer or authorized distributors?
All AD7699BCPZRL7 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 AD7699BCPZRL7 meets industry standards.
7.What is the process for return or replacement of AD7699BCPZRL7?
All AD7699BCPZRL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD7699BCPZRL7, 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 AD7699BCPZRL7 part is unused and in its original packaging.
Return procedure for AD7699BCPZRL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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