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Analog Devices Inc. AD4698BCBZ-RL7
- Part No.:
- AD4698BCBZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 36-UFBGA, WLCSP
- Datasheet:
-
AD4698BCBZ-RL7.pdf
- Description:
- 8 CH, 16 BIT 1 MSPS SAR ADC
- Quantity:
- Payment:
- Shipping:
Inventory:4,198
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Product details
Overview
AD4698BCBZ-RL7 from Analog Devices is a 16-bit, 8-channel, 1 MSPS multiplexed SAR ADC with Easy Drive architecture, on-chip oversampling (OSR = 64), ±1 LSB INL, and 93 dB SINAD at 1 kHz - deployed in photodiode monitoring and battery-powered medical instrumentation.
For engineers reviewing the AD4698BCBZ-RL7 datasheet, AD4698BCBZ-RL7 pinout, AD4698BCBZ-RL7 application, or AD4698BCBZ-RL7 equivalent, key selection criteria include guaranteed no missing codes, analog input high-Z mode for simplified AFE design, 24-lead LFCSP package, and autonomous autocycle mode for low-power interrupt-driven firmware.
Technical Context
The AD4698BCBZ-RL7 integrates an 8-channel low-crosstalk multiplexer with overvoltage protection clamps (±5 mA per input) and a true 16-bit SAR core. Its Easy Drive architecture enables analog input high-Z and reference input high-Z modes, eliminating need for external ADC drivers or reference buffers in most designs.
Digital functionality includes a customizable channel sequencer, on-chip oversampling/decimation, threshold detection with alert indicators, and autocycle mode with programmable sample periods (8.5–920 µs). It supports dual-/quad-SDO SPI interface and operates with 1.14–1.98 V logic voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with guaranteed no missing codes - ensures full dynamic range utilization without code gaps. |
| Sample Rate | 1 MSPS - enables real-time capture of fast transients in multichannel sensor systems. |
| INL | ±1 LSB max - maintains linearity critical for precision measurement in medical and test equipment. |
| SINAD | 93 dB typical at fIN = 1 kHz - delivers high signal fidelity for low-noise applications like vital signs monitoring. |
| Oversampled DR | 111.2 dB at OSR = 64 - reduces effective noise floor by >17 dB versus base rate, enabling sub-µV resolution. |
| Power Dissipation | 8 mW at 1 MSPS - supports thermally constrained, space-limited PCB layouts in portable instrumentation. |
| Operating Temp | −40°C to +125°C - qualified for industrial and automotive under-hood sensing environments. |
Pinout & Package
AD4698BCBZ-RL7 is housed in a 24-lead, 4.00 mm × 4.00 mm lead frame chip scale package (LFCSP) with exposed thermal pad. Pin functions are validated per Analog Devices' Rev. B datasheet (pages 13–15).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN0–IN7 | Analog Input Channels | Eight single-ended or pseudobipolar inputs with integrated overvoltage clamps (±5 mA) and 69.5 dB CMRR at 250 kHz. |
| COM | Common Input Reference | Shared return for odd-numbered channels; supports unipolar/pseudobipolar configurations with −0.1 V to VREF + 0.1 V operating range. |
| REF | Reference Voltage Input | Accepts 2.4–5.1 V external reference; high-Z mode reduces drive burden to ≤12 µA at 1 MSPS. |
| AVDD | Analog Power Supply | 2.7–5.5 V supply; powers ADC core, mux, and reference buffer (if enabled); supports internal LDO operation. |
| VIO | Digital I/O Supply | 1.14–1.98 V logic interface; enables low-voltage MCU interfacing without level shifters. |
| CSB | Chip Select | Active-low SPI enable; timing-critical for synchronization (tCSBH ≥ 5 ns, tCSBDIS = 15 ns). |
| SCK | SPI Clock | Supports up to 80 MHz in conversion mode; dual-/quad-SDO modes allow lower clock rates for power-sensitive hosts. |
| SDI/SDOx | SPI Data I/O | Configurable as single/dual/quad SDO; supports status bits and daisy-chain capability for multi-ADC systems. |
| CONV | Conversion Start | Edge-triggered command; initiates acquisition with 380 ns conversion time and 715 ns acquisition phase at 1 MSPS. |
| ALERT/BSY | General-Purpose Output | Programmable as threshold alert or busy indicator; tCNVBSY = 20 ns latency enables precise timing control. |
| AGND/IOGND | Ground Returns | Separate analog and digital ground pins minimize noise coupling; require low-inductance connection to common system ground plane. |
| EPAD | Exposed Thermal Pad | Internally connected to AGND; must be soldered to PCB thermal plane for thermal management and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Analog Input High-Z Mode | Reduces input drive requirement to ≤2 nA leakage and eliminates need for external op-amp drivers in most sensor interfaces. |
| On-Chip Oversampling (OSR = 64) | Improves effective resolution to >18 bits and dynamic range to 111.2 dB without host processor overhead. |
| Autocycle Mode | Enables fully autonomous conversions with programmable intervals (8.5–920 µs), reducing MCU wake-up frequency and system power. |
| Threshold Detection Alerts | Generates hardware interrupts on channel-specific over/under-limit conditions, enabling event-driven firmware architecture. |
| Overvoltage Protection Clamps | Isolates fault currents up to 5 mA per input, preventing cross-channel performance degradation during transient events. |
Applications
| Photodiode Monitoring | Medical Instrumentation |
|---|---|
Use Scenario: Simultaneous readout of multiple photodiode arrays in optical blood oximetry or fluorescence spectroscopy systems. IC Role / Device Role / Timing Role: 8-channel precision ADC capturing low-current, high-impedance photodiode outputs with 1 MSPS aggregate throughput and 93 dB SINAD. Use Value: Enables accurate ratiometric measurements across channels with <−126 dB channel-to-channel isolation and minimal crosstalk-induced error. | Use Scenario: Vital signs monitoring in portable ECG, EEG, or impedance pneumography devices requiring long battery life and clinical-grade accuracy. IC Role / Device Role / Timing Role: Multichannel analog front-end digitizer supporting unipolar/pseudobipolar modes, onboard temperature sensor (680 mV @ 25°C), and autocycle-triggered sampling. Use Value: Reduces system power via 4 µW standby dissipation and 8 mW active operation while maintaining 16-bit no-missing-codes integrity over −40°C to +125°C. |
| Battery-Powered Equipment | Electronic Test & Measurement |
Use Scenario: Handheld multimeters, portable data loggers, and field-deployable environmental sensors powered by coin cells or Li-ion batteries. IC Role / Device Role / Timing Role: Low-power, high-accuracy ADC with internal LDO support (2.7–5.5 V AVDD), 1.14–1.98 V VIO logic, and 8 mW consumption at 1 MSPS. Use Value: Eliminates external voltage regulators and reference buffers, shrinking BOM count and PCB area while sustaining 111.2 dB oversampled DR. | Use Scenario: Modular automated test equipment (ATE) and benchtop instruments requiring synchronized multichannel acquisition with flexible sequencing. IC Role / Device Role / Timing Role: Precision digitizer with customizable channel sequencer, dual-/quad-SDO SPI, and deterministic 380 ns conversion time for tight timing control. Use Value: Supports first-conversion accuracy with zero pipeline latency and programmable autocycle periods (8.5–920 µs) for adaptive sampling strategies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision multichannel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD4697BCBZ-RL7 | 500 kSPS max sample rate, identical 16-bit SAR core, same LFCSP package and pinout. | Lower throughput suitable for slower sensor arrays or lower-power duty cycles where 1 MSPS is unnecessary. | Select when system bandwidth requirements are ≤500 kSPS to reduce power (4 mW vs. 8 mW) and simplify timing constraints. |
| AD7606C-16 | 8-channel, 16-bit, 1 MSPS, but uses bipolar ±10 V input range and requires external reference; no Easy Drive or autocycle mode. | Designed for industrial PLCs and motor control feedback, not optimized for low-power portable or high-impedance sensor interfaces. | Choose for legacy ±10 V signal chains or when external reference buffering is already present; avoid if analog input high-Z or autonomous operation is required. |
Compared with AD4697BCBZ-RL7, the AD4698BCBZ-RL7 delivers double the sample rate at same power-per-sample efficiency and adds autocycle flexibility; versus AD7606C-16, it reduces system component count via integrated reference buffer support (in WLCSP variants), analog input high-Z, and on-chip oversampling - though AD7606C-16 offers wider input voltage range.
Availability
AD4698BCBZ-RL7 is available at Aetrix Electronics and suitable for photodiode monitoring, medical instrumentation, and battery-powered equipment requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for AD4698BCBZ-RL7 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 Wilmington, MA.
The AD4697/AD4698 product line was designed specifically for space-constrained, multichannel precision data acquisition systems - emphasizing low power, high channel density, and reduced analog front-end complexity through Easy Drive architecture.
FAQ
What is the maximum sample rate supported by the AD4698BCBZ-RL7?
The AD4698BCBZ-RL7 supports a maximum sample rate of 1 MSPS in standard conversion mode. This is confirmed in the Rev. B datasheet Table 1 under "Sampling Dynamics" and applies to all eight channels in multiplexed operation. The device achieves this with a 380 ns conversion time and 715 ns acquisition phase at 1 MSPS, ensuring first-conversion accuracy without pipeline latency.
Does the AD4698BCBZ-RL7 include an internal reference buffer?
No, the AD4698BCBZ-RL7 does not include an internal reference buffer. Per datasheet footnote 7 (page 7), the REFIN pin and internal reference buffer are exclusive to the WLCSP variant (e.g., AD4698WBCBZ-RL7). The AD4698BCBZ-RL7 is the LFCSP package variant and relies on an external reference applied to the REF pin, though it supports reference input high-Z mode to reduce drive current to ≤12 µA at 1 MSPS.
What package type is used for the AD4698BCBZ-RL7?
The AD4698BCBZ-RL7 uses a 24-lead, 4.00 mm × 4.00 mm lead frame chip scale package (LFCSP) with exposed thermal pad (EPAD). This is explicitly stated in the General Description (page 1) and Outline Dimensions (page 108) of the Rev. B datasheet. The "BCBZ" suffix denotes the LFCSP package, distinguishing it from the 36-ball WLCSP variant ("WBCBZ").
Can the AD4698BCBZ-RL7 operate with a 1.8 V digital I/O supply?
Yes, the AD4698BCBZ-RL7 supports a digital I/O supply (VIO) range of 1.14 V to 1.98 V, making 1.8 V fully compliant. This is specified in Table 1 (page 5) under "POWER REQUIREMENTS". At VIO = 1.8 V, the device guarantees VIH ≥ 1.26 V and VOL ≤ 0.4 V, enabling direct interfacing with 1.8 V microcontrollers without level translation.
How does the Easy Drive feature benefit system design with the AD4698BCBZ-RL7?
The Easy Drive feature in the AD4698BCBZ-RL7 reduces analog input and reference drive requirements via analog input high-Z and reference input high-Z modes. This eliminates the need for dedicated high-speed op-amp drivers and reference buffers in most applications, lowering BOM cost, PCB area, and power consumption - particularly valuable in compact, multichannel sensor systems like photodiode arrays or portable medical devices using the AD4698BCBZ-RL7.
AD4698BCBZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 36-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 8
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-ADC
- Ratio - S/H:ADC:
- 0:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 1.71V ~ 1.89V, 3.15V ~ 5.5V
- Voltage - Supply, Digital:
- 1.71V ~ 1.89V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 36-WLCSP (2.96x2.96)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD4698BCBZ-RL7 FAQ
1.How can I place an order for AD4698BCBZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD4698BCBZ-RL7 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 AD4698BCBZ-RL7 reliable?
The price and inventory of AD4698BCBZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD4698BCBZ-RL7 is usually 5 days.
3.What payment methods are accepted for AD4698BCBZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD4698BCBZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD4698BCBZ-RL7?
AD4698BCBZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD4698BCBZ-RL7 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 AD4698BCBZ-RL7?
For technical support, including AD4698BCBZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD4698BCBZ-RL7 requirements.
6.How does Aetrix verify that AD4698BCBZ-RL7 is sourced from the original manufacturer or authorized distributors?
All AD4698BCBZ-RL7 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 AD4698BCBZ-RL7 meets industry standards.
7.What is the process for return or replacement of AD4698BCBZ-RL7?
All AD4698BCBZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD4698BCBZ-RL7, 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 AD4698BCBZ-RL7 part is unused and in its original packaging.
Return procedure for AD4698BCBZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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