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Analog Devices Inc. AD7993BRU-1REEL
- Part No.:
- AD7993BRU-1REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD7993BRU-1REEL.pdf
- Description:
- IC ADC 10BIT SAR 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,826
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Product details
Overview
AD7993BRU-1REEL from Analog Devices is a 4-channel, 10-bit successive approximation ADC with I²C-compatible interface, 2 µs conversion time, 188 kSPS throughput at 5 V, and operation from 2.7 V to 5.5 V supply. It integrates a 4-input multiplexer, track-and-hold amplifier, and out-of-range alert function-used in industrial sensor monitoring systems for real-time analog signal digitization.
For engineers reviewing the AD7993BRU-1REEL datasheet, AD7993BRU-1REEL pinout, AD7993BRU-1REEL application, or AD7993BRU-1REEL equivalent, key selection considerations include its 16-lead TSSOP package, pin-selectable I²C addressing (via AS), automatic cycle interval mode, shutdown current ≤1 µA, and support for standard/fast/high-speed I²C modes up to 3.4 MHz.
Technical Context
The AD7993BRU-1REEL implements a successive approximation register (SAR) architecture with integrated 4:1 analog multiplexer and track-and-hold, enabling simultaneous sampling control across four single-ended inputs. Its I²C interface supports three operational modes: CONVST-triggered, command-mode, and automatic cycle interval-with programmable limit registers and ALERT/BUSY dual-function output.
It requires an external reference (1.2 V to VDD) applied to REFIN, supports full-scale input range of 0 V to REFIN, and features channel-to-channel isolation of −90 dB at 108 Hz. Aperture jitter is 50 ps typ, and full-power bandwidth is 11 MHz (−3 dB), allowing accurate digitization of signals up to ~10 kHz under typical high-speed I²C conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10 bits - defines quantization step size and dynamic range for precision measurement applications. |
| Conversion Time | 2 µs typ - enables rapid sampling for time-critical control loops and transient event capture. |
| Throughput Rate | 188 kSPS typ @ 5 V - achievable only in Mode 2/3 with 3.4 MHz I²C clock; determines maximum sustained sampling frequency. |
| Supply Voltage Range | 2.7 V to 5.5 V - supports direct interfacing with common microcontroller I/O rails and battery-powered systems. |
| Shutdown Current | 1 µA max - minimizes quiescent power in sleep-state sensor nodes and portable instrumentation. |
| I²C Interface Modes | Standard (100 kHz), Fast (400 kHz), High Speed (3.4 MHz) - enables flexible bus speed selection based on system noise and timing margin. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial PLC, and harsh-environment embedded use. |
Pinout & Package
AD7993BRU-1REEL 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 for all internal circuitry; must be low-impedance and separated from digital ground to preserve SNR. |
| 5 | VDD | Main power supply input (2.7–5.5 V); decoupling capacitor required near pin for noise suppression. |
| 6 | REFIN | External reference voltage input (1.2 V to VDD); sets full-scale range and directly impacts gain accuracy. |
| 7, 8, 9, 10 | VIN1–VIN4 | Four single-ended analog inputs; each accepts 0 V to REFIN range with 30 pF input capacitance and ±1 µA leakage. |
| 11 | AS | Address select logic input - configures one of five I²C addresses (GND/VDD/floating) for multi-device bus sharing. |
| 12 | CONVST | Edge-triggered convert start input - rising edge powers up device; falling edge initiates conversion after ≥1 µs setup. |
| 13 | ALERT/BUSY | Open-drain configurable output - alerts on out-of-range condition or signals active conversion state. |
| 14 | SDA | I²C bidirectional data line - requires external pull-up; supports standard/fast/high-speed modes with defined timing. |
| 15 | SCL | I²C clock input - requires external pull-up; timing compliance critical for reliable high-speed communication. |
Key Features
| Feature | Design Value |
|---|---|
| Sequencer operation | Automatically cycles through all four channels without host intervention - reduces firmware overhead in multi-sensor polling. |
| Out-of-range indicator/alert | Programmable high/low limit registers trigger open-drain ALERT output - enables hardware interrupt-driven fault response. |
| Automatic cycle interval mode | Software-configurable conversion interval eliminates need for external timing control - simplifies real-time monitoring design. |
| Low power shutdown | 1 µA max shutdown current with fast wake-up (1 µs) - ideal for duty-cycled sensor acquisition in energy-constrained systems. |
| I²C address flexibility | Three AS-pin states yield five unique I²C addresses - allows up to five AD7993BRU-1REEL devices on same bus without address conflict. |
Applications
| Industrial Process Monitoring | Automotive Battery Management |
|---|---|
|
Use Scenario: Continuous voltage and temperature sensing across multiple sensors in factory automation PLCs. IC Role / Device Role / Timing Role: 4-channel SAR ADC digitizing thermocouple, RTD, and supply rail voltages with 2 µs conversion latency. Use Value: Enables synchronized sampling of four analog inputs per cycle while maintaining <1 µA shutdown current during idle intervals. |
Use Scenario: Real-time cell voltage and pack temperature acquisition in 12 V automotive battery modules. IC Role / Device Role / Timing Role: I²C-interfaced ADC providing 10-bit resolution and −40°C to +125°C operation for BMS front-end. Use Value: Supports high-speed I²C (3.4 MHz) for rapid data transfer and ALERT output for immediate overvoltage/undervoltage detection. |
| Smart Building Environmental Sensors | Portable Test & Measurement Equipment |
|
Use Scenario: Multi-parameter air quality node measuring CO₂, humidity, and ambient light with ultra-low standby power. IC Role / Device Role / Timing Role: Low-power ADC operating from 3.3 V supply with automatic cycle interval mode for periodic wake-up sampling. Use Value: Achieves 188 kSPS throughput when active and drops to 1 µA shutdown current between readings - extends battery life. |
Use Scenario: Handheld multimeter or data logger requiring compact, calibrated analog input front-end. IC Role / Device Role / Timing Role: Precision 10-bit ADC with 61 dB SINAD and ±0.5 LSB INL used for DC/AC voltage and current measurement. Use Value: Delivers stable DC accuracy and dynamic performance across 2.7–5.5 V supply range without external calibration components. |
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 |
|---|---|---|---|
| AD7994BRU-1REEL | 12-bit resolution, 70.5 dB SINAD min, higher THD rejection (−78 dB), but 1 µA shutdown current identical. | Used where higher resolution and SNR are required - e.g., precision instrumentation, audio test equipment. | Select AD7994BRU-1REEL when 12-bit accuracy and improved dynamic range outweigh cost and code compatibility constraints. |
| ADS7828IPW | 12-bit, 50 kSPS max, SPI interface only, no I²C support, 2.7–5.25 V supply, −40°C to +85°C temp range. | Applicable in SPI-based microcontroller systems where I²C bus loading or protocol compatibility is not required. | Choose ADS7828IPW only if system uses SPI exclusively and does not require ALERT output or high-speed I²C timing. |
Compared with AD7993BRU-1REEL, AD7994BRU-1REEL offers higher resolution and dynamic performance at the cost of increased code depth and potential firmware adaptation, while ADS7828IPW lacks I²C compatibility and industrial temperature rating - making AD7993BRU-1REEL optimal for cost-sensitive, I²C-based, wide-temp embedded sensing.
Availability
AD7993BRU-1REEL is available at Aetrix Electronics and suitable for industrial process monitoring, automotive battery management, and smart building environmental sensors requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for AD7993BRU-1REEL 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 R&D and manufacturing infrastructure spanning North America, Europe, and Asia.
The AD7993/AD7994 product line was designed specifically for space- and power-constrained embedded systems needing multi-channel, I²C-compatible analog-to-digital conversion with industrial-grade reliability and minimal external components.
FAQ
What is the maximum I²C clock frequency supported by AD7993BRU-1REEL?
The AD7993BRU-1REEL supports high-speed I²C mode up to 3.4 MHz when configured as the -1 variant (confirmed by datasheet Table 3 and Pin Function Descriptions). This allows throughput rates up to 188 kSPS at 5 V supply. Standard (100 kHz) and fast (400 kHz) modes are also supported for backward compatibility and noise-sensitive environments. The AD7993BRU-1REEL must be operated in high-speed mode to achieve its peak performance specification.
Does AD7993BRU-1REEL require an external reference voltage?
Yes, AD7993BRU-1REEL requires an external reference voltage applied to the REFIN pin. The reference must be in the range of 1.2 V to VDD (2.7–5.5 V), and it directly defines the full-scale input range (0 V to REFIN). A 0.1 µF and 1 µF capacitor pair is recommended between REFIN and AGND for stability. No internal reference is provided - the AD7993BRU-1REEL relies entirely on this external source for gain accuracy and linearity.
How many I²C addresses can be assigned to AD7993BRU-1REEL?
The AD7993BRU-1REEL supports five distinct I²C addresses via the AS pin: GND (0100011b), VDD (0100100b), and floating (0100000b), as specified in Table 6 of the datasheet. This enables up to five AD7993BRU-1REEL devices to share the same I²C bus without address collision - a key feature for multi-sensor nodes. Address selection is static and determined at power-on based on AS pin voltage level.
What is the purpose of the ALERT/BUSY pin on AD7993BRU-1REEL?
The ALERT/BUSY pin on AD7993BRU-1REEL is a dual-function open-drain output configurable via internal registers. When set as ALERT, it asserts low when any channel's conversion result exceeds user-programmed high or low limits - enabling hardware interrupt-driven fault handling. When set as BUSY, it indicates active conversion. This pin eliminates polling overhead and supports deterministic real-time response in safety-critical applications using AD7993BRU-1REEL.
Is AD7993BRU-1REEL compatible with 3.3 V microcontrollers?
Yes, AD7993BRU-1REEL is fully compatible with 3.3 V microcontrollers: its VDD operates from 2.7 V to 5.5 V, logic inputs (SCL, SDA, CONVST, AS) accept 0.3×VDD to 0.7×VDD thresholds, and I²C timing specifications are guaranteed across this range. At 3.3 V, it delivers 121 kSPS throughput (3.4 MHz I²C), 1 µA shutdown current, and maintains −40°C to +125°C operation - making AD7993BRU-1REEL suitable for modern low-voltage embedded designs.
AD7993BRU-1REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-1REEL FAQ
1.How can I place an order for AD7993BRU-1REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD7993BRU-1REEL 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-1REEL reliable?
The price and inventory of AD7993BRU-1REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD7993BRU-1REEL is usually 5 days.
3.What payment methods are accepted for AD7993BRU-1REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD7993BRU-1REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD7993BRU-1REEL?
AD7993BRU-1REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD7993BRU-1REEL 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-1REEL?
For technical support, including AD7993BRU-1REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD7993BRU-1REEL requirements.
6.How does Aetrix verify that AD7993BRU-1REEL is sourced from the original manufacturer or authorized distributors?
All AD7993BRU-1REEL 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-1REEL meets industry standards.
7.What is the process for return or replacement of AD7993BRU-1REEL?
All AD7993BRU-1REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD7993BRU-1REEL, 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-1REEL part is unused and in its original packaging.
Return procedure for AD7993BRU-1REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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