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Analog Devices Inc. AD7993BRU-0
- Part No.:
- AD7993BRU-0
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7993BRU-0.pdf
- Description:
- IC ADC 10BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,610
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Product details
Overview
AD7993BRU-0 from Analog Devices is a 4-channel, 10-bit successive approximation ADC with I²C-compatible serial interface, 2 µs conversion time, 188 kSPS throughput at 5 V, and operation over −40°C to +125°C. It integrates a 4-channel multiplexer, track-and-hold amplifier, and on-chip limit registers for out-of-range monitoring in industrial sensor signal conditioning systems.
For engineers reviewing the AD7993BRU-0 datasheet, AD7993BRU-0 pinout, AD7993BRU-0 application, or AD7993BRU-0 equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives, and supply-ready procurement guidance - all grounded in Analog Devices' Rev. 0 datasheet and official pinout documentation.
Technical Context
The AD7993BRU-0 implements a successive approximation register (SAR) architecture with integrated 4:1 analog multiplexer and track-and-hold, supporting single-ended inputs up to 11 MHz full-power bandwidth. Its I²C interface operates in standard (100 kHz), fast (400 kHz), and high-speed (3.4 MHz) modes - with AD7993BRU-0 specifically rated for up to 400 kHz SCL frequency per datasheet Table 1.
Conversion control supports three modes: CONVST-triggered (Mode 1), command-mode writes (Mode 2), and automatic cycle interval (Mode 3). The device powers down between conversions, drawing ≤1 µA in shutdown, and uses an external reference (1.2 V to VDD) applied to REFIN for flexible input range scaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit SAR ADC - delivers 1024 discrete output codes for precision sensor digitization without oversampling overhead. |
| Conversion Time | 2 µs typical - enables sub-microsecond sampling latency critical for closed-loop control and fast transient capture. |
| Throughput Rate | 188 kSPS maximum at 5 V - supports high-speed multi-channel acquisition in data loggers and motor feedback systems. |
| Supply Range | 2.7 V to 5.5 V - allows direct interfacing with 3.3 V and 5 V microcontrollers and mixed-signal systems. |
| Temperature Range | −40°C to +125°C - qualified for under-hood automotive, industrial PLC, and harsh-environment embedded applications. |
| I²C Interface Speed | Up to 400 kHz (fast mode) - ensures reliable communication with standard microcontroller I²C peripherals without custom timing. |
| Power Consumption | ≤1 µA shutdown current - enables ultra-low-power wake-on-event sensing in battery-operated IoT nodes. |
Pinout & Package
AD7993BRU-0 is housed in a 16-lead TSSOP package (3.0 mm × 4.4 mm, 0.65 mm pitch) with exposed pad for thermal performance. Pin functions are validated per Analog Devices Rev. 0 datasheet Figure 3 and Table 5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 16 | AGND | Analog ground reference - must be star-connected to minimize noise coupling into sensitive analog inputs VIN1–VIN4. |
| 5 | VDD | Single power supply input - decoupling with 0.1 µF ceramic + 10 µF bulk capacitor required near pin. |
| 6 | REFIN | External reference input - accepts 1.2 V to VDD; drives internal ADC reference; requires 0.1 µF + 1 µF bypass to AGND. |
| 7, 8, 9, 10 | VIN1–VIN4 | Four single-ended analog inputs - each ratiometric to REFIN; 30 pF input capacitance necessitates low-impedance driving sources. |
| 11 | AS | Address select logic input - sets one of three I²C addresses (GND/VDD/float); enables up to five AD7993BRU-0 devices on same bus. |
| 12 | CONVST | Edge-triggered convert start - rising edge powers up device; falling edge initiates conversion; 1 µs minimum high pulse width required. |
| 13 | ALERT/BUSY | Configurable open-drain output - can signal out-of-range condition (via DATAHIGH/DATALOW registers) or BUSY during conversion. |
| 14 | SDA | I²C bidirectional data line - requires external pull-up resistor; supports standard/fast mode only (not high-speed). |
| 15 | SCL | I²C clock input - requires external pull-up resistor; timing compliant with 400 kHz fast mode per Table 3. |
Key Features
| Feature | Design Value |
|---|---|
| Sequencer operation | Hardware-controlled channel sequencing eliminates MCU firmware overhead for round-robin multi-channel sampling. |
| Out-of-range indicator/alert function | Programmable high/low limit registers trigger ALERT output as interrupt - enables autonomous fault detection without host polling. |
| Automatic cycle interval mode | Self-timed conversions at user-defined intervals reduce CPU involvement in periodic acquisition tasks. |
| Pin-selectable I²C addressing | AS pin selects among three I²C addresses - simplifies multi-device bus topology without address jumpers or configuration EEPROM. |
| Low-power shutdown | 1 µA max shutdown current - extends battery life in portable instrumentation and wireless sensor nodes. |
Applications
| Industrial Sensor Signal Conditioning | Automotive Cabin Temperature Monitoring |
|---|---|
Use Scenario: Digitizing outputs from four RTDs or thermistors in a programmable logic controller (PLC) analog input module. IC Role / Device Role / Timing Role: 4-channel front-end ADC performing synchronized single-ended conversions with I²C readout to ARM Cortex-M host. Use Value: 10-bit resolution and −40°C to +125°C rating ensure accuracy across industrial ambient extremes; 2 µs conversion enables >100 kHz effective sampling per channel. |
Use Scenario: Reading cabin air, seat surface, HVAC duct, and ambient temperature sensors in a vehicle climate control ECU. IC Role / Device Role / Timing Role: Multi-sensor ADC interfacing directly to automotive-grade microcontroller via I²C bus with minimal GPIO usage. Use Value: AS pin address selection allows co-location of multiple AD7993BRU-0 units on shared bus; 1 µA shutdown supports always-on thermal supervision. |
| Smart Energy Meter Voltage/Current Sensing | Factory Automation IO-Link Sensor Node |
Use Scenario: Simultaneous sampling of voltage, current, neutral, and auxiliary sensor signals in Class 0.5 energy meter designs. IC Role / Device Role / Timing Role: Precision SAR ADC providing ratiometric measurement referenced to stable 2.5 V external reference (REFIN). Use Value: ±0.5 LSB INL and ±0.5 LSB DNL guarantee metrology-grade linearity; 11 MHz full-power bandwidth supports anti-aliasing filter design. |
Use Scenario: Compact IO-Link device collecting analog process variables (pressure, flow, level) before serial transmission to master. IC Role / Device Role / Timing Role: Low-pin-count, I²C-native ADC minimizing PCB footprint and BOM count in space-constrained sensor housings. Use Value: 16-lead TSSOP package and 3.3 V/5 V compatibility simplify integration with IO-Link PHY ICs; ALERT output serves as hardware interrupt for event-driven reporting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-channel, I²C-compatible ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7992BRU-0 | 2-channel, 10-bit version in same 16-lead TSSOP package; identical I²C interface and timing; shares same 2 µs conversion time and −40°C to +125°C rating. | Reduces channel count by half - suitable when only two analog inputs are required, freeing PCB area and reducing cost. | Select AD7992BRU-0 when system design requires fewer than four analog inputs and board space is constrained. |
| AD7998BRU-0 | 8-channel, 10-bit version in 16-lead TSSOP; same I²C interface (400 kHz), 2 µs conversion, and operating range; adds additional multiplexed inputs. | Provides double the channel density - ideal for systems needing expanded analog monitoring without increasing I²C bus load or footprint. | Choose AD7998BRU-0 when future expansion or higher channel count is anticipated, and pin compatibility with AD7993BRU-0 simplifies layout reuse. |
Compared with AD7992BRU-0 and AD7998BRU-0, the AD7993BRU-0 uniquely balances channel count (4), package size (16-TSSOP), and I²C speed (400 kHz) for mid-density industrial sensing - offering optimal trade-off between integration and flexibility where exactly four analog inputs are required.
Availability
AD7993BRU-0 is available at Aetrix Electronics and suitable for industrial automation, automotive cabin electronics, and smart energy metering requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for AD7993BRU-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD7993BRU-0 belongs to Analog Devices' I²C-compatible precision ADC product family, designed specifically for space-constrained, multi-sensor embedded systems requiring low power, simple digital interfacing, and robust operation across extended temperature ranges.
FAQ
What is the maximum I²C clock frequency supported by the AD7993BRU-0?
The AD7993BRU-0 supports I²C fast mode up to 400 kHz, as specified in Table 1 of the Rev. 0 datasheet. Unlike the AD7993-1 variant, the AD7993BRU-0 (i.e., AD7993-0) does not support high-speed mode (3.4 MHz). This ensures compatibility with standard microcontroller I²C peripherals without requiring special timing configuration.
Does the AD7993BRU-0 require an external reference voltage?
Yes, the AD7993BRU-0 requires an external reference applied to the REFIN pin. The reference voltage must be between 1.2 V and VDD, and the datasheet recommends using both 0.1 µF and 1 µF capacitors between REFIN and AGND for stability. No internal reference is provided - this design enables ratiometric measurement and flexible input range scaling.
How many analog input channels does the AD7993BRU-0 have, and what type are they?
The AD7993BRU-0 has four single-ended analog input channels (VIN1–VIN4), each accepting voltages from 0 V to the voltage applied at REFIN. It does not support differential inputs or pseudo-differential configurations. The internal 4:1 multiplexer and track-and-hold allow sequential sampling with minimal crosstalk (−90 dB channel-to-channel isolation).
What is the purpose of the AS pin on the AD7993BRU-0?
The AS (Address Select) pin on the AD7993BRU-0 configures one of three I²C slave addresses: tied to GND (0100001b), VDD (0100010b), or left floating (0100000b). This enables up to three AD7993BRU-0 devices - or combinations with AD7992/AD7998 - on the same I²C bus without address conflict, simplifying multi-node sensor architectures.
Can the AD7993BRU-0 operate in shutdown mode, and what is its quiescent current?
Yes, the AD7993BRU-0 features a hardware-managed shutdown mode entered automatically between conversions. When fully powered down with interface inactive, it draws ≤1 µA (max) at VDD = 3.3 V, as specified in Table 1. This ultra-low quiescent current makes it suitable for battery-powered applications where periodic wake-up sampling is required.
AD7993BRU-0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 188k
- Number of Inputs:
- 4
- 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:
- 16-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD7993BRU-0 FAQ
1.How can I place an order for AD7993BRU-0 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7993BRU-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 AD7993BRU-0 reliable?
The price and inventory of AD7993BRU-0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7993BRU-0 is usually 5 days.
3.What payment methods are accepted for AD7993BRU-0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7993BRU-0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7993BRU-0?
AD7993BRU-0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7993BRU-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 AD7993BRU-0?
For technical support, including AD7993BRU-0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7993BRU-0 requirements.
6.How does Aetrix verify that AD7993BRU-0 is sourced from the original manufacturer or authorized distributors?
All AD7993BRU-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 AD7993BRU-0 meets industry standards.
7.What is the process for return or replacement of AD7993BRU-0?
All AD7993BRU-0 units undergo pre-shipment inspection (PSI). If there is an issue with AD7993BRU-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 AD7993BRU-0 part is unused and in its original packaging.
Return procedure for AD7993BRU-0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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