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Analog Devices Inc. AD7992BRMZ-0
- Part No.:
- AD7992BRMZ-0
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD7992BRMZ-0.pdf
- Description:
- IC ADC 12BIT SAR 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,587
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Product details
Overview
AD7992BRMZ-0 from Analog Devices is a 2-channel, 12-bit successive approximation ADC with I²C-compatible serial interface, operating from 2.7 V to 5.5 V supply and delivering 2 µs typical conversion time. It integrates a track-and-hold amplifier, on-chip sequencer, and out-of-range alert function, and is used in industrial sensor monitoring systems requiring precise dual-channel voltage digitization at up to 188 kSPS.
For engineers reviewing the AD7992BRMZ-0 datasheet, AD7992BRMZ-0 pinout, AD7992BRMZ-0 application, or AD7992BRMZ-0 equivalent, key selection criteria include its I²C address select (AS) pin, dual-mode operation (command vs. CONVST-triggered), programmable limit registers, 10-lead MSOP package, and −40 °C to +125 °C temperature rating.
Technical Context
The AD7992BRMZ-0 implements a capacitive DAC-based successive approximation architecture with integrated track-and-hold, supporting both single-ended analog inputs (VIN1, VIN2/REFIN) and flexible reference sourcing (1.2 V to VDD). Its I²C interface supports standard (100 kHz) and fast (400 kHz) modes - but not high-speed mode - distinguishing it from the AD7992-1 variant.
Conversion control is configurable across three modes: external CONVST edge-triggered, command-mode (conversion initiated by I²C write), or automatic cycle timer mode. The ALERT output functions as either an out-of-range indicator (comparing results against user-programmed high/low limits) or BUSY status flag, with open-drain drive requiring external pull-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete digital codes for high-fidelity voltage measurement. |
| Conversion Time | 2 µs typ - enables rapid sampling of transient signals without pipeline latency. |
| Throughput Rate | 188 kSPS max at 5 V - supports real-time closed-loop control in motor drives and power supplies. |
| Analog Input Range | 0 V to REFIN - requires external reference (1.2 V to VDD) for full-scale flexibility. |
| I²C Interface Modes | Standard (100 kHz) and Fast (400 kHz) - no high-speed mode support; AS pin selects among 3 addresses. |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive and industrial ambient environments. |
| Power Consumption | 1 µA max shutdown current - enables ultra-low-power wake-on-event sensing in battery systems. |
Pinout & Package
AD7992BRMZ-0 is housed in a 10-lead MSOP (Mini Small Outline Package) with 0.5 mm lead pitch, thermally enhanced for industrial reliability. Pin 1 is marked with a dot; pins are numbered counterclockwise from top-left when viewed from top side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CONVST | Edge-triggered convert start input | Rising edge powers up device; falling edge initiates conversion - enables precise timing control in synchronous systems. |
| 2, 7 AGND | Analog ground reference | Common return for all analog circuitry; must be isolated from digital ground to minimize noise coupling. |
| 3 VDD | Single power supply input | 2.7 V to 5.5 V operation - powers both analog and digital sections; decoupling capacitor required. |
| 4 VIN2/REFIN | Channel 2 input / reference voltage input | In dual-channel mode: second analog input; in single-channel mode: external reference source (1.2 V to VDD). |
| 5 VIN1 | Channel 1 analog input | Single-ended input referenced to AGND; full-scale range determined by REFIN voltage. |
| 6 AS | Address select logic input | GND/VDD/floating configures one of three I²C addresses - allows up to five AD7992 devices on same bus. |
| 8 ALERT/BUSY | Configurable open-drain output | Software-selectable as out-of-range interrupt or conversion-in-progress indicator - simplifies host polling/interrupt handling. |
| 9 SDA | I²C bidirectional data line | Open-drain interface requiring external pull-up; supports standard/fast modes only (no high-speed). |
| 10 SCL | I²C clock input | Master-generated clock; timing compliant with I²C spec up to 400 kHz - defines maximum throughput rate. |
Key Features
| Feature | Design Value |
|---|---|
| Sequencer operation | Automatically alternates between VIN1 and VIN2 in dual-channel mode - eliminates host software overhead for multi-sensor polling. |
| Out-of-range alert function | Programmable high/low limit registers trigger ALERT output - enables autonomous overvoltage/undervoltage detection without host intervention. |
| Automatic shutdown between conversions | 1 µA max quiescent current in shutdown - reduces average power in intermittent sampling applications like environmental monitors. |
| Pin-selectable I²C addressing | Three distinct addresses via AS pin state - permits daisy-chained configuration of multiple AD7992BRMZ-0 units on shared bus. |
| Flexible reference input | REFIN accepts 1.2 V to VDD - supports ratiometric measurements using supply rail or precision external references. |
Applications
| Industrial Sensor Monitoring | Motor Drive Current Sensing |
|---|---|
Use Scenario: Continuous acquisition of temperature and pressure sensor outputs in PLC I/O modules. IC Role / Device Role / Timing Role: Dual-channel ADC digitizing two independent analog sensors with synchronized sampling and I²C readout. Use Value: Eliminates need for external multiplexer and timing controller; 12-bit resolution ensures <0.025% FS accuracy across 0–100 °C and 0–10 bar ranges. |
Use Scenario: Real-time phase current sampling in 3-phase inverter gate drivers. IC Role / Device Role / Timing Role: High-speed voltage-to-digital conversion of shunt resistor voltages, triggered by PWM sync pulses via CONVST. Use Value: 2 µs conversion time enables sub-microsecond current feedback loop closure; 188 kSPS throughput supports >30 kHz control bandwidth. |
| Battery Management Systems | Smart Energy Meters |
Use Scenario: Cell voltage and pack temperature monitoring in lithium-ion battery packs. IC Role / Device Role / Timing Role: Low-power ADC performing periodic wake-up conversions, using ALERT to signal overvoltage events. Use Value: 1 µA shutdown current extends battery life; programmable limits allow autonomous cell balancing initiation without MCU involvement. |
Use Scenario: Voltage and current channel digitization in Class 0.5 revenue-grade meters. IC Role / Device Role / Timing Role: Precision dual-input ADC capturing RMS voltage and current waveforms with synchronized sampling. Use Value: ±1 LSB INL and 70.5 dB SINAD meet IEC 62053-21 accuracy requirements; wide VDD range accommodates meter auxiliary supply variations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit dual-channel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7992BRMZ-1 | Supports I²C high-speed mode (3.4 MHz); otherwise identical pinout, specs, and register map. | Enables higher throughput (188 kSPS at 3.4 MHz) in systems with high-bandwidth I²C buses. | Select AD7992BRMZ-1 only if host controller supports high-speed I²C and >400 kHz SCL is required. |
| ADS7822U | 8-pin SOIC; SPI interface; 12-bit; single-channel; 2.7–5.25 V supply; 2 µs conversion; no built-in sequencer or alert. | Lacks dual-channel capability and I²C compatibility - requires external multiplexing and GPIO-based interrupt logic. | Choose ADS7822U only for space-constrained designs where SPI is preferred and single-channel operation suffices. |
Compared with AD7992BRMZ-1, the AD7992BRMZ-0 trades high-speed I²C support for guaranteed compatibility with legacy 400 kHz controllers; versus ADS7822U, it provides integrated dual-channel sequencing and alert functionality at the cost of SPI-to-I²C ecosystem alignment.
Availability
AD7992BRMZ-0 is available at Aetrix Electronics and suitable for industrial sensor monitoring, motor drive current sensing, battery management systems, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD7992BRMZ-0 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide and ISO 9001-certified manufacturing.
The AD7992BRMZ-0 belongs to Analog Devices' precision SAR ADC product line, engineered for low-power, high-accuracy data acquisition in space- and power-constrained industrial and automotive systems.
FAQ
What is the maximum I²C clock frequency supported by the AD7992BRMZ-0?
The AD7992BRMZ-0 supports standard mode (100 kHz) and fast mode (400 kHz) I²C operation only. It does not support high-speed mode (3.4 MHz), which is exclusive to the AD7992-1 variant. At 400 kHz, the AD7992BRMZ-0 achieves up to 121 kSPS throughput in Mode 1 and 147 kSPS in Mode 2, making it suitable for systems with legacy I²C controllers limited to 400 kHz.
How does the AS pin affect I²C addressing on the AD7992BRMZ-0?
The AS pin on the AD7992BRMZ-0 selects among three I²C addresses: GND → 0100001b, VDD → 0100010b, and floating → 0100000b. This allows up to three AD7992BRMZ-0 devices to share the same I²C bus without address conflict. The AD7992BRMZ-0 does not support the 0100011b or 0100100b addresses reserved for the AD7992-1 variant.
Can the AD7992BRMZ-0 operate with a 1.8 V supply?
No, the AD7992BRMZ-0 requires a minimum VDD of 2.7 V and operates up to 5.5 V. Operation below 2.7 V violates absolute maximum ratings and will result in undefined behavior, including failure to power up, incorrect conversion results, or permanent damage. For 1.8 V systems, consider the AD7991 or AD7995 families with lower supply ranges.
What is the role of the VIN2/REFIN pin in dual-channel versus single-channel mode?
In dual-channel mode (CONFIG register D6 = 0), VIN2/REFIN serves as the second analog input (VIN2), with internal reference derived from VDD. In single-channel mode (D6 = 1), VIN2/REFIN becomes the external reference input (REFIN), accepting 1.2 V to VDD - enabling ratiometric or precision reference configurations. The AD7992BRMZ-0's internal logic automatically reconfigures this pin based on software register settings.
Does the AD7992BRMZ-0 support simultaneous sampling of both channels?
No, the AD7992BRMZ-0 uses a single ADC core with an internal 2-channel multiplexer and does not support true simultaneous sampling. Channel switching occurs sequentially during acquisition, resulting in a fixed time skew between VIN1 and VIN2 samples. For phase-critical applications requiring zero skew, consider dual independent ADCs such as the AD7321 or AD7682.
AD7992BRMZ-0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 79k
- Number of Inputs:
- 2
- Input Type:
- Single Ended
- Data Interface:
- I2C
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 10-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7992BRMZ-0 FAQ
1.How can I place an order for AD7992BRMZ-0 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7992BRMZ-0 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 AD7992BRMZ-0 reliable?
The price and inventory of AD7992BRMZ-0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7992BRMZ-0 is usually 5 days.
3.What payment methods are accepted for AD7992BRMZ-0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7992BRMZ-0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7992BRMZ-0?
AD7992BRMZ-0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7992BRMZ-0 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 AD7992BRMZ-0?
For technical support, including AD7992BRMZ-0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7992BRMZ-0 requirements.
6.How does Aetrix verify that AD7992BRMZ-0 is sourced from the original manufacturer or authorized distributors?
All AD7992BRMZ-0 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 AD7992BRMZ-0 meets industry standards.
7.What is the process for return or replacement of AD7992BRMZ-0?
All AD7992BRMZ-0 units undergo pre-shipment inspection (PSI). If there is an issue with AD7992BRMZ-0, 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 AD7992BRMZ-0 part is unused and in its original packaging.
Return procedure for AD7992BRMZ-0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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