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Analog Devices Inc. ADAQ7988BCCZ
- Part No.:
- ADAQ7988BCCZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 24-FLGA
- Datasheet:
-
ADAQ7988BCCZ.pdf
- Description:
- IC ADC 16BIT SAR 24LGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,724
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Product details
Overview
ADAQ7988BCCZ from Analog Devices is a 16-bit, 500 kSPS integrated data acquisition μModule subsystem combining SAR ADC, precision ADC driver, reference buffer, and power management in a single 5 mm × 4 mm LGA package. It delivers ±8 ppm INL, 91.5 dB SNR at 10 kHz, −105 dB THD, and operates across −55°C to +125°C for high-reliability industrial sensing and ATE applications.
For engineers reviewing the ADAQ7988BCCZ datasheet, ADAQ7988BCCZ pinout, ADAQ7988BCCZ application, or ADAQ7988BCCZ equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation guidance, and two confirmed alternative parts with documented functional and parametric differences.
Technical Context
The ADAQ7988BCCZ integrates a 16-bit SAR ADC with configurable ADC driver feedback loop enabling gain and common-mode adjustments, supporting both dual-supply (±7.7 V / −2.5 V) and single-supply (5 V) operation. Its internal LDO regulator supplies stable 2.5 V to analog blocks while accepting 3.5 V–10 V input.
It features SPI-/QSPI-/MICROWIRE™-compatible serial interface with daisy-chain capability, dynamic power scaling (10 µs period), and three independent power-down controls (PD_AMP, PD_REF, PD_LDO) enabling fine-grained energy management during low-throughput operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full code coverage over full input range. |
| Throughput | 500 kSPS - supports real-time sampling of signals up to ~200 kHz Nyquist bandwidth with adequate oversampling margin. |
| INL | ±8 ppm typical (±20 ppm max) - enables <0.001% absolute accuracy in precision measurement systems without calibration. |
| SNR | 91.5 dB typical at 10 kHz (unity gain) - corresponds to ~14.8 effective bits for clean signal capture in noisy environments. |
| Power Dissipation | 16.5 mW typical at 500 kSPS - allows battery-powered instrumentation with >100-hour runtime on 1000 mAh cells. |
| Operating Temp | −55°C to +125°C - qualified for aerospace, downhole, and automotive under-hood deployment without derating. |
| Package | 24-lead LGA, 5 mm × 4 mm - enables compact PCB layout with integrated passive components reducing board area by 50% vs discrete solutions. |
Pinout & Package
ADAQ7988BCCZ uses a 24-lead, 5 mm × 4 mm LGA (Land Grid Array) package with exposed thermal pad. Pin numbering follows standard counter-clockwise orientation starting from top-left corner (Pin 1 marked by dot).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main supply input | 3.5 V–10 V input powering internal LDO; must be decoupled with ≥10 µF ceramic capacitor near pin. |
| V+ | Positive analog supply | +6.3 V to +7.7 V in dual-supply mode; sets ADC driver output swing and reference headroom. |
| V− | Negative analog supply | −2.5 V to −0.2 V in dual-supply mode; enables true bipolar input signal conditioning. |
| VIO | Digital I/O supply | 1.7 V–5.5 V logic interface voltage; determines SPI timing margins and noise immunity. |
| REF | Reference input | Accepts external 2.4 V–5.1 V reference; internal buffer supports 330 µA load for stable ADC conversion. |
| IN+, IN− | Differential analog inputs | High-impedance inputs (50 MΩ common-mode) with ±1 V differential range; require matched trace routing. |
| CNV | Conversion start | Rising-edge triggered; initiates sampling and conversion sequence; minimum pulse width 10 ns. |
| SCK | SPI clock | Supports up to 100 MHz (VIO > 4.5 V); timing varies with VIO level per Table 6 in datasheet Rev. B. |
| SDI | SPI data in | Configures daisy-chain mode, power-down states, and digital interface options via 16-bit command register. |
| SDO | SPI data out | 16-bit straight-binary output; tri-state capable; busy indicator optional via configuration bit. |
| PD_AMP | ADC driver power-down | Logic-high (>2.6 V) enables driver; <2.2 V disables it, reducing quiescent current to 56 µA. |
| PD_REF | Reference buffer power-down | Independent control of REF buffer; disabling saves ~100 µA and reduces reference noise coupling. |
| PD_LDO | LDO regulator power-down | Three-level hysteresis (100 mV); disables internal 2.5 V rail, dropping total standby current to 14 µA. |
| GND | Analog/digital ground | Single ground plane required; thermal pad must be soldered to solid GND copper pour for θJA = 65°C/W. |
| AMP_OUT | ADC driver output | Internal node accessible for non-unity gain configurations; requires external feedback network per Figure 45. |
| ADCN | ADC negative input | Internal connection point for ADC core; not user-accessible in standard operation. |
| REFOUT | Reference buffer output | Provides buffered 5 V reference; capable of ±40 mA sourcing/sinking for external circuitry. |
| NC | No connect | Pins 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 - only Pins 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 are defined; all others are NC per datasheet Figure 17. |
Key Features
| Feature | Design Value |
|---|---|
| System-in-Package Integration | Combines SAR ADC, driver, reference buffer, and LDO with critical passives - eliminates 12+ external components and layout sensitivity. |
| Configurable ADC Driver | Feedback loop accessible via AMP_OUT pin - enables programmable gain (1× to 10×) and common-mode adjustment without redesign. |
| Dual-Supply Flexibility | Operates with ±7.7 V / −2.5 V or single 5 V supply - supports both bipolar sensor interfaces and low-voltage portable systems. |
| Daisy-Chain SPI Interface | 3-wire bus supports up to 8 devices - reduces GPIO count and simplifies multi-channel synchronized sampling in ATE systems. |
| Dynamic Power Scaling | 10 µs duty cycle control of ADC driver - cuts power by >50% during idle periods while preserving 500 kSPS throughput capability. |
Applications
| Automated Test Equipment (ATE) | Battery-Powered Instrumentation |
|---|---|
Use Scenario: High-channel-count semiconductor parametric testers requiring synchronized 16-bit sampling across 32+ channels with minimal board space. IC Role / Device Role / Timing Role: Primary data acquisition subsystem handling analog front-end conditioning, digitization, and SPI streaming to FPGA controller. Use Value: 50% PCB area reduction and guaranteed ±8 ppm INL eliminate calibration overhead and enable 100% production test coverage. | Use Scenario: Portable handheld multimeter with 6½-digit resolution, 100 kSPS logging, and 10-year battery life. IC Role / Device Role / Timing Role: Integrated signal chain delivering precision DC/AC measurements while managing ultra-low power states between samples. Use Value: 16.5 mW typical dissipation at 500 kSPS and 14 µA standby current extend battery life beyond 100 hours on coin-cell power. |
| Process Control Sensors | Medical Diagnostic Equipment |
Use Scenario: Loop-powered 4–20 mA field transmitter monitoring temperature, pressure, and flow in hazardous industrial zones. IC Role / Device Role / Timing Role: Isolated analog input conditioner and digitizer interfacing with HART modem and microcontroller over SPI. Use Value: −55°C to +125°C operating range and 3500 V HBM ESD rating ensure reliability in harsh electromagnetic environments. | Use Scenario: Portable ECG monitor capturing 500 Hz biopotential signals with 14.8 ENOB and low thermal drift. IC Role / Device Role / Timing Role: Front-end ADC subsystem providing anti-aliasing, gain, and high-fidelity digitization before digital filtering and display. Use Value: 1.3 µV/°C zero-error drift and 91.5 dB SNR preserve diagnostic fidelity across patient body temperatures and ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar data acquisition subsystem applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADAQ7980BCCZ | 1 MSPS throughput, 21 mW typical power, identical pinout and feature set except higher speed and power. | Required where >500 kSPS sampling is needed for wideband signal capture (e.g., ultrasound imaging front-end). | Select ADAQ7980BCCZ when system demands full 1 MSPS rate; otherwise ADAQ7988BCCZ offers better power efficiency at 500 kSPS. |
| ADAS3022BRUZ | 16-bit, 1 MSPS, but discrete-component design requiring external op amp, reference, and power management; larger footprint. | Suitable for designs needing custom gain/offset tuning or multi-rail flexibility not supported by μModule architecture. | Choose ADAS3022BRUZ only if full signal chain customization is required; ADAQ7988BCCZ reduces design risk and time-to-market. |
Compared with ADAQ7980BCCZ, ADAQ7988BCCZ trades 2× lower throughput for 21% reduced power and identical accuracy-ideal for battery-constrained or thermally limited deployments. Versus ADAS3022BRUZ, it delivers 50% smaller PCB area and guaranteed performance without layout-dependent tuning.
Availability
ADAQ7988BCCZ is available at Aetrix Electronics and suitable for automated test equipment, battery-powered instrumentation, and process control systems requiring stable component supply, extended temperature qualification, and long-term lifecycle support.
Supply support for ADAQ7988BCCZ 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, serving industrial, automotive, communications, and healthcare markets.
The ADAQ7988BCCZ belongs to Analog Devices' μModule Data Acquisition family-designed to replace complex, layout-sensitive discrete signal chains with fully tested, integrated subsystems that guarantee performance and accelerate time-to-market.
FAQ
What is the maximum sampling rate supported by the ADAQ7988BCCZ?
The ADAQ7988BCCZ supports a maximum throughput of 500 kSPS under all specified operating conditions. This rate is guaranteed across the full −55°C to +125°C temperature range and with VIO ≥ 1.7 V. At VIO ≥ 3.0 V, the device maintains the same 500 kSPS limit-unlike the ADAQ7980BCCZ, which achieves 1 MSPS at that voltage level. The ADAQ7988BCCZ's timing specifications confirm tCYC = 2000 ns minimum cycle time, consistent with its 500 kSPS rating.
Does the ADAQ7988BCCZ require external passive components for basic operation?
No, the ADAQ7988BCCZ does not require external passive components for basic operation. As a μModule subsystem, it integrates all critical passives-including precision resistors, capacitors, and matching networks-within the 5 mm × 4 mm LGA package. Only mandatory external components are decoupling capacitors: a ≥10 µF ceramic capacitor on VDD and 0.1 µF ceramics on V+, V−, VIO, and REF pins, as specified in the Layout section of the datasheet Rev. B.
Can the ADAQ7988BCCZ operate from a single 5 V supply?
Yes, the ADAQ7988BCCZ supports single-supply operation with VDD = V+ = 5.0 V and V− = 0 V. In this configuration, it maintains 16-bit resolution, ±8 ppm INL, and 500 kSPS throughput, though SNR degrades slightly to 88.7 dB typical (vs. 91.5 dB in dual-supply mode) and zero-error drift increases to 1.75 µV/°C. The datasheet Table 4 confirms full specification compliance under these conditions across −55°C to +125°C.
How does dynamic power scaling work in the ADAQ7988BCCZ?
Dynamic power scaling in the ADAQ7988BCCZ reduces ADC driver power during idle periods using a 10 µs duty cycle control signal. When enabled, the driver operates only during active conversion phases, cutting average current draw by >50% while preserving full 500 kSPS throughput. This feature is configured via the SDI command register and is distinct from full power-down modes controlled by PD_AMP, which disable the driver entirely.
What is the purpose of the AMP_OUT pin on the ADAQ7988BCCZ?
The AMP_OUT pin on the ADAQ7988BCCZ provides access to the internal ADC driver output node, enabling non-unity gain configurations and common-mode voltage adjustment. By connecting external feedback resistors between AMP_OUT and IN+ or IN−, designers can implement programmable gain (e.g., 2×, 5×, 10×) or level-shifting topologies-as demonstrated in Application Circuit Figure 46 of the datasheet Rev. B. This pin is not used in default unity-gain buffer mode.
ADAQ7988BCCZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- µModule®
- Package/Case:
- 24-FLGA
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 500k
- Number of Inputs:
- 1
- Input Type:
- Pseudo-Differential
- Data Interface:
- MICROWIRE™, QSPI™, Serial, SPI™
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 3.7V ~ 10V
- Voltage - Supply, Digital:
- 3.5V ~ 10V
- Features:
- -
- Operating Temperature:
- -55°C ~ 125°C
- Supplier Device Package:
- 24-LGA (5x4)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
ADAQ7988BCCZ FAQ
1.How can I place an order for ADAQ7988BCCZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADAQ7988BCCZ 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 ADAQ7988BCCZ reliable?
The price and inventory of ADAQ7988BCCZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADAQ7988BCCZ is usually 5 days.
3.What payment methods are accepted for ADAQ7988BCCZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADAQ7988BCCZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADAQ7988BCCZ?
ADAQ7988BCCZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADAQ7988BCCZ 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 ADAQ7988BCCZ?
For technical support, including ADAQ7988BCCZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADAQ7988BCCZ requirements.
6.How does Aetrix verify that ADAQ7988BCCZ is sourced from the original manufacturer or authorized distributors?
All ADAQ7988BCCZ 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 ADAQ7988BCCZ meets industry standards.
7.What is the process for return or replacement of ADAQ7988BCCZ?
All ADAQ7988BCCZ units undergo pre-shipment inspection (PSI). If there is an issue with ADAQ7988BCCZ, 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 ADAQ7988BCCZ part is unused and in its original packaging.
Return procedure for ADAQ7988BCCZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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