My Inquiry
My Account
Analog Devices Inc. AD8277BRZ-RL
- Part No.:
- AD8277BRZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8277BRZ-RL.pdf
- Description:
- IC INST AMP 2 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,342
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD8277BRZ-RL from Analog Devices is a dual-channel, unity-gain difference amplifier optimized for precision current and voltage monitoring in low-power, wide-supply industrial and portable systems. It delivers 86 dB CMRR (dc to 10 kHz), 550 kHz bandwidth, ±2 μV/°C system offset drift (B Grade), 1 ppm/°C gain drift, and operates from single supplies as low as 2.0 V or dual supplies up to ±18 V.
For engineers reviewing the AD8277BRZ-RL datasheet, AD8277BRZ-RL pinout, AD8277BRZ-RL application, or AD8277BRZ-RL equivalent, this device is selected for high-common-mode-voltage signal conditioning where rail-to-rail input range beyond supplies, rugged input overvoltage protection, and sub-200 μA per channel quiescent current are critical design requirements.
Technical Context
The AD8277BRZ-RL integrates two matched difference amplifier channels on a single die, each with laser-trimmed 40 kΩ thin-film resistors enabling precise G = 1 operation without external components. Its internal architecture eliminates direct access to op amp inputs, reducing parasitic capacitance and preserving CMRR stability up to 100 kHz.
Each channel features independent SENSE, REF, +IN/–IN, OUT, and shared ±VS terminals - supporting differential output instrumentation amplifier configurations, bidirectional current sensing via Kelvin-sense connections, and high-side voltage monitoring with input common-mode range extending to −VS + 40 V and +VS − 40 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CMRR | 86 dB min (dc to 10 kHz): maintains accuracy under high common-mode interference in motor drives or power supply feedback loops. |
| Bandwidth | 550 kHz at ±15 V: supports fast transient response in real-time current monitoring up to ~100 kHz signal content. |
| Supply Current | 200 μA per channel max: enables multi-channel sensing in battery-powered equipment with >10-year shelf life. |
| Input Voltage Range | −VS + 40 V to +VS − 40 V: allows direct measurement of 30 V common-mode signals on ±10 V supplies without attenuation networks. |
| Gain Drift | 1 ppm/°C max (B Grade): ensures <0.01% gain error shift over −40°C to +85°C ambient, critical for uncalibrated industrial sensors. |
| System Offset Drift | ±2 μV/°C max (B Grade): limits thermal-induced offset error to <200 μV across full temperature range. |
| Slew Rate | 1.1 V/μs: supports clean amplification of 10 V step inputs with ≤15 μs settling to 0.01%. |
Pinout & Package
AD8277BRZ-RL is housed in a 14-lead SOIC package (R-14) with standard JEDEC outline and RoHS-compliant finish. Thermal resistance θJA = 105°C/W on 4-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7 | NC | No connect - electrically isolated; no PCB trace or thermal pad required. |
| 2, 6 | −INA / −INB | Inverting inputs for Channel A/B - referenced to internal resistor network; require low-impedance drive. |
| 3, 5 | +INA / +INB | Noninverting inputs for Channel A/B - accept signals beyond supply rails via internal 2× attenuation. |
| 4 | −VS | Negative supply rail - must be ≥2 V below +VS; supports unbalanced dual supplies (e.g., −0.5 V / +2 V). |
| 8 | REFB | Channel B reference input - sets output common-mode level; tied to midsupply or ground for single-ended output. |
| 9 | OUTB | Channel B amplified differential output - capable of driving 10 kΩ loads with ±15 V swing (−VS + 0.2 V to +VS − 0.2 V). |
| 10 | SENSEB | Channel B sense terminal - connects to load side of shunt for 4-wire Kelvin current sensing, rejecting trace resistance error. |
| 11 | +VS | Positive supply rail - accepts 2.0 V to 36 V single or ±2 V to ±18 V dual supplies. |
| 12 | SENSEA | Channel A sense terminal - identical function to SENSEB; enables simultaneous dual-shunt monitoring. |
| 13 | OUTA | Channel A amplified differential output - fully independent of OUTB; supports differential output instrumentation topologies. |
| 14 | REFA | Channel A reference input - independently configurable from REFB for split-reference or level-shifted outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Rugged input overvoltage protection | Withstands −VS + 40 V to +VS − 40 V at all inputs - eliminates need for external clamping diodes in 24 V industrial bus monitoring. |
| Laser-trimmed resistor matching | Enables 86 dB CMRR without external trimming - achieves performance unattainable with discrete resistor networks. |
| Wide input common-mode range | Operates with inputs up to double the supply voltage - supports high-side current sensing in 36 V automotive or solar MPPT systems. |
| Low power dissipation | 0.54 mW at 2.7 V supply - enables integration into space-constrained, thermally isolated modules without heatsinking. |
| Unity-gain stable architecture | Guaranteed stable with G = 1, −1, or +2 configurations - simplifies design of precision single-ended or differential output stages. |
Applications
| Motor Phase Current Monitoring | Bidirectional DC Link Current Sensing |
|---|---|
Use Scenario: Real-time measurement of phase currents in 3-phase BLDC inverters using shunt resistors placed between IGBTs and ground. IC Role / Device Role / Timing Role: Dual-channel difference amplifier conditioning shunt voltage with independent REFA/REFB for offset control and SENSEA/SENSEB for Kelvin connection. Use Value: 86 dB CMRR rejects PWM switching noise; 550 kHz bandwidth captures current ripple up to 100 kHz without phase lag. |
Use Scenario: Monitoring bidirectional energy flow in battery storage systems with shunts on both high- and low-side of DC link. IC Role / Device Role / Timing Role: Simultaneous high-side (+INB/−INB/REFB/SENSEB) and low-side (+INA/−INA/REFA/SENSEA) sensing with independent references. Use Value: Input range beyond supplies allows direct high-side measurement at 400 V common-mode; 1 ppm/°C gain drift ensures SOC accuracy over temperature. |
| Portable Battery Voltage & Current Gauge | Industrial 4–20 mA Loop Transmitter |
Use Scenario: Integrated voltage and current monitoring in handheld test equipment powered by Li-ion batteries (2.7–4.2 V). IC Role / Device Role / Timing Role: Single-supply operation at 2.7 V with midsupply reference; ultra-low 200 μA/channel current extends battery runtime. Use Value: 200 μA quiescent current enables >10-year shelf life; rail-to-rail input accommodates full battery voltage range without level shifting. |
Use Scenario: Precision current sensing in loop-powered 4–20 mA transmitters for pressure/temperature sensors in hazardous areas. IC Role / Device Role / Timing Role: High CMRR difference amplifier rejecting ground-loop noise on long sensor cables; SENSE pins enable 4-wire shunt compensation. Use Value: 86 dB CMRR suppresses 50/60 Hz pickup; ±2 μV/°C offset drift minimizes calibration drift in unattended field installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar difference amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8276ARZ-R7 | Single-channel, 8-lead SOIC; identical specs except single vs. dual channel and package size. | Used where only one sensing path is needed; smaller PCB footprint but requires two devices for dual-channel use. | Select AD8276ARZ-R7 when space or cost constraints favor single-channel implementation and channel count can be scaled externally. |
| INA199A1DCKR | Single-channel, 6-pin SC70; 500 kHz bandwidth, 70 dB CMRR, 100 μA IQ; lacks SENSE pin and extended input range. | Targeted at low-cost, low-voltage (<12 V) consumer applications; not suitable for >±10 V common-mode or Kelvin sensing. | Choose INA199A1DCKR only for cost-sensitive, low-voltage, single-ended current sensing where CMRR >80 dB is not required. |
Compared with AD8277BRZ-RL, AD8276ARZ-R7 provides identical precision in half the channel count and area, while INA199A1DCKR trades CMRR, input range, and Kelvin capability for lower cost and power - making AD8277BRZ-RL the sole choice for dual-channel, high-CMRR, rail-exceeding industrial monitoring.
Availability
AD8277BRZ-RL is available at Aetrix Electronics and suitable for motor control, battery management, and industrial 4–20 mA loop applications requiring stable component supply, long-term lifecycle support, and guaranteed RoHS compliance.
Supply support for AD8277BRZ-RL 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 AD8276/AD8277 product line was designed specifically for precision, low-power difference amplification in space- and power-constrained industrial and portable instrumentation - emphasizing CMRR stability, input overvoltage robustness, and laser-trimmed resistor accuracy.
FAQ
What is the maximum common-mode input voltage supported by AD8277BRZ-RL?
AD8277BRZ-RL supports input voltages from −VS + 40 V to +VS − 40 V. For example, with ±15 V supplies, inputs may safely range from −35 V to +35 V. This rail-exceeding capability enables direct high-side shunt monitoring in 24 V and 48 V systems without external attenuators or level shifters - a key enabler for compact, high-accuracy current sensing designs.
Does AD8277BRZ-RL require external resistors for unity-gain difference amplifier operation?
No. AD8277BRZ-RL integrates four laser-trimmed 40 kΩ thin-film resistors per channel, configured internally for precise G = 1 difference amplification. No external gain-setting resistors are needed - eliminating matching errors, board area, and thermal drift sources associated with discrete networks. The SENSE, REF, and IN pins provide full configurability without compromising accuracy.
Can AD8277BRZ-RL be used in single-supply configurations below 5 V?
Yes. AD8277BRZ-RL operates from single supplies as low as 2.0 V. At 2.7 V, it delivers 450 kHz bandwidth, 1.0 V/μs slew rate, and maintains 86 dB CMRR with VCM = 0 V to 2.4 V. This makes AD8277BRZ-RL suitable for ultra-low-voltage portable instrumentation, including handheld multimeters and battery-powered data loggers where supply headroom is constrained.
How does the SENSE pin improve measurement accuracy in AD8277BRZ-RL?
The SENSE pin on each channel of AD8277BRZ-RL enables true 4-wire (Kelvin) connection to the shunt resistor, bypassing voltage drops across PCB traces and solder joints. By routing the sense line directly to the shunt's load-side terminal, AD8277BRZ-RL rejects series resistance errors - ensuring measured voltage reflects only the shunt's IR drop, critical for sub-milliohm shunt accuracy in high-current applications.
What is the temperature range specification for AD8277BRZ-RL?
AD8277BRZ-RL is specified for operation from −40°C to +85°C ambient temperature, with extended performance validation up to +125°C junction temperature. Its B-grade specifications - including ±2 μV/°C system offset drift and 1 ppm/°C gain drift - are guaranteed across the full −40°C to +85°C range, making it suitable for uncalibrated deployment in industrial enclosures and automotive under-hood environments.
AD8277BRZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Instrumentation
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.1V/µs
- Gain Bandwidth Product:
- 550 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- -
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- -
- Current - Output / Channel:
- 15 mA
- Voltage - Supply Span (Min):
- 2 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
AD8277BRZ-RL FAQ
1.How can I place an order for AD8277BRZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8277BRZ-RL 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 AD8277BRZ-RL reliable?
The price and inventory of AD8277BRZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8277BRZ-RL is usually 5 days.
3.What payment methods are accepted for AD8277BRZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8277BRZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8277BRZ-RL?
AD8277BRZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8277BRZ-RL 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 AD8277BRZ-RL?
For technical support, including AD8277BRZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8277BRZ-RL requirements.
6.How does Aetrix verify that AD8277BRZ-RL is sourced from the original manufacturer or authorized distributors?
All AD8277BRZ-RL 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 AD8277BRZ-RL meets industry standards.
7.What is the process for return or replacement of AD8277BRZ-RL?
All AD8277BRZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with AD8277BRZ-RL, 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 AD8277BRZ-RL part is unused and in its original packaging.
Return procedure for AD8277BRZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD8277BRZ-RL Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
