AD7980ACPZ-RL7 - 16-Bit 1 MSPS SAR ADC | Analog Devices
MPN: AD7980ACPZ-RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $10 | $1,000.00 |
| 500 | $9 | $4,500.00 |
| 1,000 | $8.1 | $8,100.00 |
AD7980ACPZ-RL7 Overview
An ADC (analog-to-digital converter) is an electronic component that converts continuous analog signals into discrete digital values, enabling digital processing of real-world signals. SAR ADCs use a binary search algorithm to approximate the input voltage, balancing speed and resolution. The AD7980 belongs to the PulSAR family, known for low power consumption and high accuracy, making it suitable for battery-powered and precision measurement systems.
Key features include 16-bit resolution with no missing codes, a throughput of 1 MSPS, and low power dissipation that scales linearly with throughput. The reference voltage (REF) is applied externally and can be set independently of VDD, providing flexibility in system design. The device also supports daisy-chaining multiple ADCs on a single 3-wire bus via the SDI input, simplifying multi-channel data acquisition.
The AD7980 uses a charge redistribution architecture with a capacitive DAC, achieving excellent linearity with INL of ±0.6 LSB typical and ±1.25 LSB maximum. Its SINAD performance is specified in the datasheet, ensuring high signal integrity for precision applications. The device operates over a wide temperature range and is available in both MSOP and LFCSP packages, with the LFCSP variant offering a smaller footprint.
Typical applications include battery-powered instruments, data acquisition systems, medical devices, and industrial process control. The low power consumption and small package make it ideal for portable and embedded designs. The SPI-compatible interface allows easy integration with microcontrollers and DSPs.
When designing with the AD7980, ensure a clean, low-impedance reference voltage and adequate decoupling on VDD and REF pins. The CNV pin initiates conversions on its rising edge, and the busy indicator can be used to synchronize data reads. Proper PCB layout with short analog input traces minimizes noise and maintains accuracy.
Drop-in alternatives for AD7980ACPZ-RL7 — 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 AD7980ACPZ-RL7 (same form factor and footprint) — differing in Data Interface, Input Type, Operating Temperature, Package / Case, Voltage - Supply, Analog.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD7980BCPZ-RL7
✅ Drop-In✓ In Stock
$18 / Unit
View Datasheet →AD7980ACPZ-RL
✅ Drop-In📋 Reference alternative (not in catalog)
AD7982BCPZ-RL7
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
AD7690BCPZ-RL7
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
AD7980ACPZ-RL7 Maximum Ratings & Electrical Characteristics
| Resolution | 16 bits |
| Sampling Rate | 1 MSPS |
| Number of Inputs | 1 |
| Input Type | Single-ended |
| Data Interface | SPI, QSPI, MICROWIRE, DSP |
| Architecture | SAR |
| Reference Type | External |
| Voltage - Supply, Analog | 2.375 V ~ 2.625 V |
| Voltage - Supply, Digital | 2.375 V ~ 2.625 V |
| INL (Integral Nonlinearity) | ±0.6 LSB typical, ±1.25 LSB maximum |
| Package / Case | 10-LFCSP-WD (3x3 mm) |
| Operating Temperature | -40°C to +85°C |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
AD7980ACPZ-RL7 Pin Configuration
| Pin 1 | IN+ — Analog input positive |
| Pin 2 | IN- — Analog input negative |
| Pin 3 | GND — Ground |
| Pin 4 | VDD — Power supply |
| Pin 5 | REF — Reference voltage input |
| Pin 6 | SDI — Serial data input (daisy-chain) |
| Pin 7 | SCK — Serial clock |
| Pin 8 | SDO — Serial data output |
| Pin 9 | CNV — Convert input (rising edge initiates conversion) |
| Pin 10 | BUSY — Busy indicator (optional) |
Typical Applications
AD7980ACPZ-RL7 is suitable for 6 applications: Battery-Powered Instruments, Data Acquisition Systems, Medical Devices, Industrial Process Control, Portable Test Equipment, Precision Measurement.
Battery-Powered Instruments
The AD7980ACPZ-RL7's low power dissipation, which scales linearly with throughput, makes it ideal for battery-powered instruments such as portable multimeters and data loggers. At lower sampling rates, power consumption drops significantly, extending battery life. Its 16-bit resolution and 1 MSPS sampling rate provide high accuracy for measurement applications. The small LFCSP package saves board space, and the SPI interface simplifies integration with microcontrollers.
Recommended
Data Acquisition Systems
In data acquisition systems, the AD7980ACPZ-RL7 provides high-speed, high-resolution conversion of analog signals. Its 1 MSPS sampling rate captures fast transients, while 16-bit resolution ensures accurate representation. The external reference allows precise scaling, and the daisy-chain feature enables multiple ADCs on a single bus, simplifying multi-channel systems. The SPI interface is compatible with most microcontrollers and DSPs, making integration straightforward.
Recommended
Medical Devices
The AD7980ACPZ-RL7 is suitable for medical devices such as patient monitors and diagnostic equipment, where precision and low power are critical. Its 16-bit resolution provides high accuracy for vital sign monitoring, and the low power consumption is ideal for portable devices. The small package allows compact designs, and the wide operating temperature range ensures reliability in clinical environments. The SPI interface enables easy connection to medical-grade microcontrollers.
Recommended
Industrial Process Control
In industrial process control, the AD7980ACPZ-RL7 provides accurate conversion of sensor signals for monitoring and control. Its 16-bit resolution and 1 MSPS sampling rate enable real-time processing of fast-changing parameters. The external reference allows calibration for specific sensor ranges, and the robust design operates over -40°C to +85°C. The SPI interface supports long-distance communication with industrial controllers, and the small package fits into space-constrained control modules.
Recommended
Portable Test Equipment
The AD7980ACPZ-RL7 is ideal for portable test equipment such as handheld oscilloscopes and spectrum analyzers. Its high sampling rate and resolution enable accurate measurement of signals, while low power consumption extends battery life. The compact LFCSP package allows miniaturization, and the SPI interface simplifies connection to display processors. The external reference provides flexibility for different measurement ranges, and the daisy-chain feature supports multi-channel acquisition in a compact form factor.
Recommended
Precision Measurement
The AD7980ACPZ-RL7 excels in precision measurement applications such as weigh scales and strain gauge interfaces. Its 16-bit resolution and low INL (±0.6 LSB typical) ensure accurate readings. The external reference allows precise ratiometric measurements, and the low power consumption is beneficial for battery-operated scales. The small package and SPI interface make it easy to integrate into existing designs, and the wide temperature range ensures stable performance in various environments.
Recommended
Recommended Products Summary
Engineering reference data for AD7980ACPZ-RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7980BCPZ-RL7 | AD7980ACPZ-RL | AD7982BCPZ-RL7 | AD7690BCPZ-RL7 |
|---|---|---|---|---|---|
| Package | 10-LFCSP-WD (3x3 mm) | 10-LFCSP-WD (3x3 mm) | 10-LFCSP-WD (3x3 mm) | 10-LFCSP-WD (3x3 mm) | 10-LFCSP-WD (3x3 mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 bits | 16 bits | 16 bits | 18 bits | 16 bits |
| Sampling Rate | 1 MSPS | 1 MSPS | 1 MSPS | 1 MSPS | 400 kSPS |
| Supply Voltage | 2.375 V to 2.625 V | 2.375 V to 2.625 V | 2.375 V to 2.625 V | 2.375 V to 2.625 V | 2.375 V to 2.625 V |
| Data Interface | SPI, QSPI, MICROWIRE, DSP | SPI, QSPI, MICROWIRE, DSP | SPI, QSPI, MICROWIRE, DSP | SPI, QSPI, MICROWIRE, DSP | SPI, QSPI, MICROWIRE, DSP |
| Pin Compatibility | Reference | Pin-compatible | Pin-compatible | Pin-compatible | Pin-compatible |
Key Differentiators
- Pin-compatible with 18-bit AD7982 (vs AD7980BCPZ-RL7)
- Low power dissipation scaling with throughput (vs AD7690BCPZ-RL7)
- Higher sampling rate than AD7690 (vs AD7690BCPZ-RL7)
Design Notes
The AD7980ACPZ-RL7 operates from a single 2.5 V supply (VDD). Ensure that VDD is clean and well-decoupled with a 10 µF ceramic capacitor placed close to the VDD pin. The reference voltage (REF) should also be decoupled with a 10 µF capacitor to maintain stability. Power dissipation scales with throughput, so lower sampling rates reduce power consumption.
For optimal performance, keep analog input traces short and shielded from digital signals. Use a solid ground plane and place the ADC close to the signal source. The REF pin should have a low-impedance path to the reference source. Avoid routing digital signals under the ADC to minimize noise coupling.
Ensure that the CNV pin is triggered with a clean rising edge to initiate conversion. The BUSY pin can be used to synchronize data reads. Do not exceed the absolute maximum ratings for VDD and REF. Also, verify that the external reference is stable and within the specified range to avoid conversion errors.
Compliance Information
RoHS compliant per Analog Devices product page. AEC-Q100 not applicable for this commercial-grade ADC.