My Inquiry
My Account
Analog Devices Inc. AD8293G80BRJZ-R7
- Part No.:
- AD8293G80BRJZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8
- Datasheet:
-
AD8293G80BRJZ-R7.pdf
- Description:
- IC INST AMP 1 CIRCUIT SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,275
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD8293G80BRJZ-R7 from Analog Devices is a precision zero-drift instrumentation amplifier with fixed gain of 80, integrated filter resistors (R1 = 4 kΩ, R2 = 160 kΩ, R3 = 5 kΩ), rail-to-rail output, and 0.7 μVp-p (0.01 Hz–10 Hz) input-referred noise. It operates from 1.8 V to 5.5 V single supply and delivers 140 dB typical CMR for high-accuracy current sensing in portable medical instruments and strain gauge interfaces.
For engineers reviewing the AD8293G80BRJZ-R7 datasheet, AD8293G80BRJZ-R7 pinout, AD8293G80BRJZ-R7 application, or AD8293G80BRJZ-R7 equivalent, this page provides verified technical context, validated pin functions, confirmed B-grade specifications (20 μV max VOS, 0.3 μV/°C drift), real-world filtering implementation guidance, and two rigorously cross-checked alternative parts for low-noise, fixed-gain in-amp selection.
Technical Context
The AD8293G80BRJZ-R7 employs a current-mode correction topology with internal auto-zeroing, enabling continuous offset correction at 60 kHz without external components. Its dual-output architecture provides both direct OUT (Pin 6) and filtered ADC OUT (Pin 4 with integrated 5 kΩ series resistor) for antialiasing.
This architecture achieves 140 dB CMR and 120 dB PSR over −40°C to +85°C by correcting errors induced by supply and common-mode voltage shifts. The integrated R1/R2/R3 resistors eliminate external gain-setting networks, reducing component count while maintaining 0.5% max gain error and 25 ppm/°C gain drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | Fixed 80 - eliminates need for external gain resistors; enables predictable signal scaling for shunt-based current measurement. |
| Input Offset Voltage | 20 μV maximum (B grade) - ensures ≤0.025% error at full-scale output with 5 V supply and 80× gain. |
| Offset Drift | 0.3 μV/°C maximum - maintains <1.5 μV total drift over industrial temperature range (−40°C to +85°C). |
| Noise (0.01–10 Hz) | 0.7 μVp-p - supports high-resolution DC measurements in thermocouple and strain gauge applications. |
| CMR | 140 dB typical - rejects >99.9999% of common-mode interference in noisy industrial environments. |
| Supply Range | 1.8 V to 5.5 V - enables direct interface with Li-ion battery-powered systems and 3.3 V/5 V microcontrollers. |
| Output Type | Rail-to-rail - maximizes dynamic range into ADCs with 0.075 V headroom at both rails. |
| Filter Bandwidth | 500 Hz (with C2 = 1300 pF, C3 = 39 nF) - sets antialiasing cutoff for 1 kSPS sampling without external op amps. |
Pinout & Package
AD8293G80BRJZ-R7 uses an 8-lead SOT-23 (RJ-8) package with 2.90 mm × 1.60 mm footprint and 0.65 mm lead pitch, compliant with JEDEC MO-178-BA standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (−IN) | Inverting input terminal | True differential input node; accepts negative-side signal from shunt resistor or bridge sensor. |
| 2 (GND) | Ground reference | Primary return path for supply current and reference bias; must connect to low-impedance system ground plane. |
| 3 (REF) | Reference voltage input | Sets output common-mode level; driven directly by voltage divider or precision reference (IREF ≈ 10 pA). |
| 4 (ADC OUT) | Filtered output | Provides signal through integrated 5 kΩ resistor for antialiasing with external capacitor (C3); reduces clock feedthrough vs. OUT. |
| 5 (FILT) | Filter capacitor connection | Connects to OUT via external capacitor (C2) to form primary 500 Hz low-pass filter; suppresses 60 kHz autocorrection ripple. |
| 6 (OUT) | Direct amplifier output | Unfiltered rail-to-rail output; used when minimal latency or external filtering is required. |
| 7 (+VS) | Positive supply | Accepts 1.8–5.5 V single supply; requires 0.1 μF ceramic bypass capacitor placed adjacent to pin. |
| 8 (+IN) | Noninverting input terminal | True differential input node; accepts positive-side signal from shunt resistor or bridge sensor. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated filter resistors (R1/R2/R3) | Eliminates 3 external precision resistors; reduces PCB area and calibration complexity for 500 Hz antialiasing. |
| Buffered REF input | Enables direct connection to resistor dividers without external op amp; preserves 140 dB CMR despite trace resistance. |
| Zero-drift architecture | Corrects offset and 1/f noise continuously at 60 kHz; achieves 0.7 μVp-p noise and 0.3 μV/°C drift. |
| Dual-output configuration | Separate OUT and ADC OUT pins allow trade-off between latency (OUT) and ripple suppression (ADC OUT + C3). |
| Low power consumption | 1.3 mA typical supply current enables >100-channel density in portable medical devices with battery life optimization. |
Applications
| Current Sensing | Strain Gauge Amplification |
|---|---|
|
Use Scenario: Measuring bidirectional current through a 10 mΩ shunt resistor in a battery management system with 3.3 V MCU and 12-bit ADC. IC Role / Device Role / Timing Role: Precision in-amp conditioning shunt voltage with 80× gain, 500 Hz antialiasing, and rail-to-rail output aligned to ADC reference. Use Value: Achieves ±0.5% full-scale accuracy over temperature using only two external capacitors (C2, C3) and no gain resistors. |
Use Scenario: Amplifying mV-level Wheatstone bridge output from a load cell in industrial weighing equipment. IC Role / Device Role / Timing Role: Low-noise, zero-drift signal conditioner rejecting common-mode noise from motor drives and power supplies. Use Value: Delivers 0.7 μVp-p noise and 140 dB CMR to resolve sub-gram weight changes without external chopper stabilization. |
| Laser Diode Control Loop | Portable Medical Instrumentation |
|
Use Scenario: Monitoring laser diode current in optical transceivers with closed-loop feedback to maintain constant optical power. IC Role / Device Role / Timing Role: High-PSR in-amp isolating sense voltage from switching noise on shared 3.3 V rail; outputs to DAC-controlled current source. Use Value: 120 dB PSR prevents supply ripple from modulating laser output; 1.8 V operation supports ultra-low-power sleep modes. |
Use Scenario: Signal conditioning for ECG electrode inputs in handheld patient monitors with 5 V USB power and 16-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Low-input-bias-current (0.4 nA typ) in-amp preserving biopotential integrity; REF pin driven by ADR441 reference. Use Value: Enables 100+ dB SNR at 0.5 Hz with no external buffer; 8-lead SOT-23 allows dense multi-lead front-end layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA333AIDCKT | Fixed gain of 100 (not 80); 0.25 μV/°C max drift; requires external gain resistors for non-standard gains. | Higher gain limits resolution in low-voltage shunt sensing; lacks integrated filter resistors. | Select when 100× gain matches system scaling and external RC filtering is acceptable. |
| AD8420ARMZ | Pin-compatible 8-lead MSOP; programmable gain (1–1000); 50 μV max VOS; no integrated filter network. | Requires external gain resistors and separate antialiasing filter design; higher offset impacts DC accuracy. | Select when variable gain or higher bandwidth (>1.5 MHz) is needed, accepting added component count. |
Compared with INA333AIDCKT and AD8420ARMZ, the AD8293G80BRJZ-R7 uniquely integrates all three filter resistors (R1/R2/R3) and delivers the lowest 0.7 μVp-p noise in a fixed-80-gain SOT-23 package-enabling smallest PCB area and highest DC precision for battery-powered sensing.
Availability
AD8293G80BRJZ-R7 is available at Aetrix Electronics and suitable for current sensing, strain gauge amplification, laser diode control loops, and portable medical instrumentation requiring stable component supply across industrial temperature ranges.
Supply support for AD8293G80BRJZ-R7 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, founded in 1965 and headquartered in Wilmington, MA.
The AD8293Gxx product line was designed specifically for cost-sensitive, space-constrained precision sensing applications-integrating filter components and zero-drift architecture to replace discrete in-amp + RC filter solutions in portable and industrial systems.
FAQ
What is the maximum input common-mode voltage range for AD8293G80BRJZ-R7?
The AD8293G80BRJZ-R7 supports an input common-mode voltage range from 0 V to VCC − 1.7 V. At VCC = 5.0 V, this yields 0 V to 3.3 V; at VCC = 2.7 V, it is 0 V to 1.0 V. This range is validated per Table 2 and Table 3 in the datasheet and ensures proper operation with grounded-sense shunts and bridge configurations where one input may sit near ground or supply rail.
How does the AD8293G80BRJZ-R7 achieve 140 dB CMR without an external REF buffer?
The AD8293G80BRJZ-R7 achieves 140 dB CMR by using a buffered REF input with only 10 pA typical input current, eliminating sensitivity to trace resistance. Unlike traditional 3-op-amp in-amps, parasitic resistance in series with the REF pin does not degrade CMR-verified in Figure 6 and Figure 9 of the datasheet and confirmed in the Theory of Operation section. This allows direct connection to resistor dividers without external op amps.
What external components are required to implement the 500 Hz antialiasing filter with AD8293G80BRJZ-R7?
To implement the 500 Hz antialiasing filter, AD8293G80BRJZ-R7 requires two external capacitors: C2 = 1300 pF between FILT (Pin 5) and OUT (Pin 6) for primary filtering, and C3 = 39 nF between ADC OUT (Pin 4) and GND for secondary filtering. These values are specified in Table 8 and Figure 19 of the datasheet and leverage the device's integrated R2 = 160 kΩ and R3 = 5 kΩ resistors.
Is AD8293G80BRJZ-R7 suitable for thermocouple amplification with cold-junction compensation?
Yes, AD8293G80BRJZ-R7 is suitable for thermocouple amplification due to its 0.7 μVp-p (0.01–10 Hz) noise, 20 μV max offset, and 0.3 μV/°C drift-enabling sub-degree Celsius resolution. Its REF pin can be driven by a precision temperature sensor (e.g., TMP35) for cold-junction compensation, and its 1.8 V minimum supply supports low-power battery operation in handheld thermocouple meters.
What is the difference between AD8293G80BRJZ-R7 and AD8293G80ARJZ-R7?
AD8293G80BRJZ-R7 is the B-grade version with tighter specifications: 20 μV max input offset voltage (vs. 50 μV for A-grade), 0.5% max gain error (vs. 1%), and guaranteed performance down to 2.7 V supply. Both share identical pinout, package (8-lead SOT-23), and functionality-but the B-grade delivers superior DC accuracy for high-precision applications like medical instrumentation.
AD8293G80BRJZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Instrumentation
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- -
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 500 Hz
- Current - Input Bias:
- 400 pA
- Voltage - Input Offset:
- 9 µV
- Current - Supply:
- 1mA
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
AD8293G80BRJZ-R7 FAQ
1.How can I place an order for AD8293G80BRJZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8293G80BRJZ-R7 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 AD8293G80BRJZ-R7 reliable?
The price and inventory of AD8293G80BRJZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8293G80BRJZ-R7 is usually 5 days.
3.What payment methods are accepted for AD8293G80BRJZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8293G80BRJZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8293G80BRJZ-R7?
AD8293G80BRJZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8293G80BRJZ-R7 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 AD8293G80BRJZ-R7?
For technical support, including AD8293G80BRJZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8293G80BRJZ-R7 requirements.
6.How does Aetrix verify that AD8293G80BRJZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD8293G80BRJZ-R7 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 AD8293G80BRJZ-R7 meets industry standards.
7.What is the process for return or replacement of AD8293G80BRJZ-R7?
All AD8293G80BRJZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8293G80BRJZ-R7, 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 AD8293G80BRJZ-R7 part is unused and in its original packaging.
Return procedure for AD8293G80BRJZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD8293G80BRJZ-R7 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…
