AD7980BRMZ - 16-Bit 1 MSPS PulSAR ADC | Analog Devices
MPN: AD7980BRMZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $33.32 | $33.32 |
| 10 | $30.25 | $302.50 |
| 100 | $25.8 | $2,580.00 |
| 500 | $18.42 | $9,210.00 |
| 1,000 | $13.65 | $13,650.00 |
| 3,000 | $13.1 | $39,300.00 |
Drop-in alternatives for AD7980BRMZ β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
AD7980SRMZ-EP
β Drop-Inπ Reference alternative (not in catalog)
AD7982BRMZ
β Drop-Inπ Reference alternative (not in catalog)
AD7988-5BRMZ
β Drop-Inπ Reference alternative (not in catalog)
AD7988-1BRMZ
β Drop-Inπ Reference alternative (not in catalog)
AD7942BRMZ
β‘ Same Packageπ Reference alternative (not in catalog)
AD7980BRMZ Maximum Ratings & Electrical Characteristics
| Resolution | 16 Bit |
| Architecture | Successive Approximation Register (SAR) |
| Number of Inputs | 1 |
| Input Type | Pseudo-Differential |
| Throughput | 1 MSPS |
| INL | Β±0.6 LSB typical, Β±1.25 LSB maximum |
| Analog Input Range | 0 V to VREF |
| Reference Voltage | External VREF, [DATA_NEEDED: reference voltage range] |
| Interface Type | SPI-compatible serial, 3-wire, daisy-chain, BUSY |
| Supply Voltage | [DATA_NEEDED: VDD range] |
| Digital Logic Compatibility | 1.8 V to 5 V |
| Power Dissipation | [DATA_NEEDED: mW at 1 MSPS] |
| Operating Temperature Range | [DATA_NEEDED: Β°C] |
| Package | 10-Lead MSOP (RM-10) |
| MSL Level | 1 (Unlimited) |
| RoHS | RoHS3 Compliant |
| REACH | REACH Unaffected |
AD7980BRMZ Pin Configuration
| Pin 1 | REF β Reference voltage input |
| Pin 2 | IN+ β Positive analog input |
| Pin 3 | IN- β Negative analog input |
| Pin 4 | GND β Ground |
| Pin 5 | SDO β Serial data output |
| Pin 6 | SDI β Serial data input for daisy-chain |
| Pin 7 | SCLK β Serial clock input |
| Pin 8 | CNV β Convert input |
| Pin 9 | VIO β Digital interface supply |
| Pin 10 | VDD β Power supply |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
AD7980BRMZ is suitable for 6 applications: Industrial Data Acquisition, Medical Instrumentation, Automated Test Equipment, Portable Battery-Powered Instruments, PLC Analog Input Module, Precision Sensor Signal Chain.
Industrial Data Acquisition
The AD7980BRMZ provides 16-bit resolution with Β±1.25 LSB maximum INL at 1 MSPS, making it suitable for industrial data acquisition systems that digitize 4-20 mA loops, process variables, and vibration sensors. Its pseudo-differential input rejects common-mode noise between the sensor ground and ADC ground, while the 3-wire SPI interface connects directly to PLC or FPGA logic. In this role, an external precision reference such as the ADR4540 sets the full-scale range, and a low-distortion driver amplifier, for example the AD8021, conditions the sensor signal before conversion. The compact 10-MSOP package helps fit multiple channels on a dense I/O card. Power scaling with throughput is useful in multiplexed acquisition where the ADC can idle at a lower effective sampling rate.
Recommended
Medical Instrumentation
For medical devices such as patient monitors, diagnostic analyzers, and lab instruments, the AD7980BRMZ delivers the 16-bit accuracy needed to resolve small physiological signals. The low power dissipation, which scales linearly with throughput, is beneficial in battery-powered and USB-powered equipment. The pseudo-differential input enables direct connection to precision instrumentation amplifiers while suppressing common-mode interference from the patient or instrument ground. The 10-MSOP package is small enough for portable diagnostic probes. A low-noise reference such as the ADR4550 and a precision op amp like the AD8628 create a complete front end. The SPI interface can daisy-chain multiple AD7980 devices for multichannel ECG or multi-parameter measurement modules.
Recommended
Automated Test Equipment
Automated test equipment often requires high-speed, accurate digitizers with small footprint and flexible interface. The AD7980BRMZ samples at 1 MSPS with 16-bit resolution and a maximum INL of Β±1.25 LSB, enabling DUT characterization with low conversion errors. Its SPI interface supports daisy-chaining, so multiple ADCs can capture parallel channels over a single 3-wire bus with the BUSY indicator providing precise sample timing. The external reference allows the test-equipment designer to set the ADC full-scale to match the DUT output range, maximizing dynamic range. In a mixed-signal ATE card, a programmable reference and an FPGA such as the XC7Z020-2CLG484I can manage channel scheduling, buffer acquisition, and data transfer to the host controller.
Recommended
Portable Battery-Powered Instruments
The AD7980BRMZ suits portable instruments because its power dissipation scales linearly with throughput, allowing designers to reduce average current by lowering the sample rate. At slower rates such as 10 kSPS, the ADC consumes significantly less power. The 1.8 V to 5 V digital interface also accommodates low-voltage microcontrollers that dominate battery-powered designs. The 10-MSOP footprint preserves board area for batteries and user interfaces. A small LDO such as the ADP151 can supply a stable VDD, and an external reference like the ADR4540 provides a drift-controlled full-scale. For handheld multimeters or portable spectrum analyzers, the AD7980's SPI-compatible serial port simplifies isolation and routing in a noisy handheld environment.
Recommended
PLC Analog Input Module
In PLC analog input modules, the AD7980BRMZ converts conditioned process signals with 16-bit resolution and no missing codes, ensuring consistent readings over the full industrial temperature range. The pseudo-differential input makes it easier to handle remote sensor grounds and reject common-mode pickup from motor drives and relay switching. The 1 MSPS throughput supports rapid scanning of multiple channels when paired with an analog multiplexer, while the daisy-chain SPI format minimizes the number of isolation channels needed across the galvanic isolation barrier. Designers typically place a digital isolator such as the ADuM5401 on the SPI bus and a precision reference like the ADR4540 for stable full-scale. This combination yields an accurate, compact, and isolated analog input channel.
Recommended
Precision Sensor Signal Chain
The AD7980BRMZ provides the conversion core for precision sensor signal chains that measure temperature, strain, pressure, or chemical quantities. Its 16-bit resolution and Β±1.25 LSB maximum INL preserve the accuracy of a well-conditioned analog front end. The analog input range of 0 V to VREF, with VREF independent of VDD, allows designers to set the full-scale to the sensor interface voltage. Power scaling linearly with throughput is an advantage in sensor nodes that sample intermittently and sleep between measurements. The small MSOP package helps fit multiple sensor acquisition channels on a PCB. For best noise performance, use a low-noise reference and a precision driver amp, for example ADR4540 and ADA4899, plus an RC filter before the ADC input.
Recommended
Recommended Products Summary
Engineering reference data for AD7980BRMZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7980SRMZ-EP | AD7982BRMZ | AD7988-5BRMZ | AD7988-1BRMZ | AD7942BRMZ |
|---|---|---|---|---|---|---|
| Package | 10-MSOP | 10-MSOP | 10-MSOP | 10-MSOP | 10-MSOP | 10-MSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16-bit | 16-bit | 18-bit | 16-bit | 16-bit | 14-bit |
| Throughput | 1 MSPS | 1 MSPS | 1 MSPS | 500 kSPS | 100 kSPS | 250 kSPS |
| INL | Β±0.6 LSB typ / Β±1.25 LSB max | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Input Type | Pseudo-differential | Pseudo-differential | Pseudo-differential | Pseudo-differential | Pseudo-differential | Pseudo-differential |
| Digital Interface | SPI-compatible, 3-wire, daisy-chain | SPI-compatible, 3-wire, daisy-chain | SPI-compatible, 3-wire, daisy-chain | SPI-compatible | SPI-compatible | SPI-compatible |
| Power Dissipation | [DATA_NEEDED: mW at 1 MSPS] | [DATA_NEEDED] | [DATA_NEEDED] | Lower than AD7980 | Lowest in family | [DATA_NEEDED] |
Key Differentiators
- Higher sample rate than low-power family siblings (vs AD7988-1BRMZ)
- Lower cost and sufficient resolution for 16-bit systems (vs AD7982BRMZ)
- Higher resolution than lower-grade family sibling (vs AD7942BRMZ)
- Standard temperature grade vs enhanced product (vs AD7980SRMZ-EP)
Design Notes
Place a low-impedance reference capacitor as close as possible to the REF pin and a 0.1 Β΅F decoupling capacitor on VDD and VIO. The AD7980 is a switched-capacitor input ADC, so the analog source must be able to settle quickly during acquisition. Use a low-output-impedance driver amplifier such as the AD8021 and add an RC filter between the driver and IN+ pin to suppress wideband noise. Keep the pseudo-differential return trace short and connect it to a quiet analog ground plane for best linearity.
Power dissipation scales linearly with throughput, so your system can save energy by reducing the effective sample rate. Use separate analog and digital supply domains; VDD is the analog supply and VIO is the digital interface supply. Decouple both pins with low-ESR 0.1 Β΅F ceramic capacitors. If VIO is a different voltage from VDD, ensure the host controller's SPI logic levels are compatible before connecting the ADC. A clean reference voltage is essential for full-scale accuracy.
Do not overdrive the analog input beyond the pseudo-differential 0 V to VREF range. The reference voltage must be applied externally and should be well bypassed; an unstable reference will directly affect conversion accuracy. When using SDI for daisy-chain mode, confirm that every ADC in the chain is configured for the correct number of bits. The CNV pulse initiates conversion; follow the datasheet timing diagram to avoid reading out the previous conversion's data on the wrong SCLK edge. Always consult the AD7980 datasheet for exact timing requirements.
Compliance Information
PartGenie listing states ROHS3 Compliant and REACH Unaffected. Lead-free inferred from RoHS3 compliance. No halogen-free or conflict minerals statement appeared in the verified web data.
