My Inquiry
My Account
Analog Devices Inc. AD8293G80ARJZ-R7
- Part No.:
- AD8293G80ARJZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8
- Datasheet:
-
AD8293G80ARJZ-R7.pdf
- Description:
- IC INST AMP 1 CIRCUIT SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:7,781
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD8293G80ARJZ-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.
For engineers reviewing the AD8293G80ARJZ-R7 datasheet, AD8293G80ARJZ-R7 pinout, AD8293G80ARJZ-R7 application, or AD8293G80ARJZ-R7 equivalent, key selection considerations include its integrated antialiasing filter path (ADC OUT pin with 5 kΩ series resistor), low 0.3 μV/°C offset drift, 500 Hz filter-limited bandwidth, and SOT-23-8 package compatibility with space-constrained PCB layouts.
Technical Context
The AD8293G80ARJZ-R7 uses a current-mode correction topology with internal auto-zeroing to achieve ultra-low offset voltage (≤30 μV for B-grade) and near-zero drift. Its dual-output architecture provides both direct OUT (Pin 6) and filtered ADC OUT (Pin 4) paths, enabling flexible signal conditioning before analog-to-digital conversion.
It incorporates three on-chip precision resistors-R1 (4 kΩ) for input current conversion, R2 (160 kΩ) for primary filtering with external C2, and R3 (5 kΩ) for secondary antialiasing filtering with external C3-eliminating six external components versus discrete solutions. The buffered REF pin (Pin 3) accepts 0.8 V to VCC−0.8 V with only 1 nA input current, enabling direct connection to resistive dividers without CMR degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | Fixed 80× - eliminates external gain-setting resistors and associated tolerance errors |
| Input Offset Voltage | ≤30 μV (B-grade) - enables sub-μV-level dc accuracy in strain gauge and thermocouple amplification |
| Offset Drift | 0.3 μV/°C max - ensures stable baseline over industrial temperature range (−40°C to +85°C) |
| Noise (0.01–10 Hz) | 0.7 μVp-p - supports high-resolution measurements in low-frequency biosignal acquisition |
| CMR | 140 dB typical - rejects common-mode interference in noisy industrial current-sensing environments |
| Supply Range | 1.8 V to 5.5 V - allows direct interface with Li-ion battery-powered systems and 3.3 V/5 V microcontrollers |
| Filter Bandwidth | 500 Hz (with C2 = 1300 pF, C3 = 39 nF) - sets antialiasing cutoff for 1 kSPS ADC sampling |
Pinout & Package
AD8293G80ARJZ-R7 is housed in an 8-lead halogen-free, Pb-free SOT-23 package (JEDEC MO-178-BA, RJ-8), measuring 2.90 mm × 1.60 mm × 1.30 mm, optimized for high-density portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (−IN) | Inverting differential input | Accepts true differential sensor signals; forms matched pair with +IN for high CMR |
| 2 (GND) | Analog ground reference | Common return for all internal circuitry; must be connected to low-impedance system ground plane |
| 3 (REF) | Output reference level control | Drives amplifier output mid-rail; 1 nA input current permits direct resistor-divider biasing |
| 4 (ADC OUT) | Filtered output with 5 kΩ series resistor | Connects directly to ADC input; forms RC antialiasing filter with external C3 (e.g., 39 nF) |
| 5 (FILT) | Filter capacitor connection node | External capacitor between FILT and OUT sets primary 500 Hz low-pass response via internal R2 |
| 6 (OUT) | Direct instrumentation amplifier output | Unfiltered rail-to-rail output; used when full bandwidth or minimal phase delay is required |
| 7 (+VS) | Positive power supply | Accepts 1.8–5.5 V; requires 0.1 μF ceramic bypass capacitor placed adjacent to pin |
| 8 (+IN) | Noninverting differential input | Completes true differential input pair; matched impedance to −IN ensures balanced CMR |
Key Features
| Feature | Design Value |
|---|---|
| Integrated filter resistors (R1/R2/R3) | Reduces external component count by 6 parts and eliminates matching errors in antialiasing design |
| Rail-to-rail output swing | Delivers full dynamic range into 10 kΩ loads, maximizing ADC utilization in 1.8 V–5.5 V systems |
| Buffered reference input | Enables direct connection to resistive dividers without external op amp, saving PCB area and cost |
| Low 1.3 mA supply current | Supports >10-year battery life in portable medical devices operating at 1.8 V supply |
| 60 kHz internal correction clock | Minimizes 1/f noise without requiring external clock synchronization or layout shielding |
Applications
| Current Sensing | Strain Gauge Amplification |
|---|---|
|
Use Scenario: Measuring bidirectional current through a shunt resistor in battery management systems. IC Role / Device Role / Timing Role: Precision in-amp conditions mV-level shunt voltage with 80× gain and 500 Hz antialiasing before ADC sampling. Use Value: Integrated R1/R2/R3 eliminate 6 external passives; 0.3 μV/°C drift ensures stable calibration across automotive temperature ranges. |
Use Scenario: Amplifying microvolt-level Wheatstone bridge outputs in industrial load cells. IC Role / Device Role / Timing Role: Zero-drift in-amp rejects bridge common-mode voltage while delivering rail-to-rail output to 16-bit SAR ADC. Use Value: 140 dB CMR suppresses EMI-induced errors; 0.7 μVp-p noise enables <10 ppm measurement resolution. |
| Laser Diode Control Loop | Portable Medical Instrumentation |
|
Use Scenario: Monitoring laser diode forward current for closed-loop optical power regulation. IC Role / Device Role / Timing Role: In-amp converts sense resistor voltage to precise feedback signal with minimal offset drift over time. Use Value: Low 30 μV offset and 0.3 μV/°C drift prevent thermal-induced output drift in compact laser modules. |
Use Scenario: Signal conditioning for ECG/EEG front-ends in handheld diagnostic devices. IC Role / Device Role / Timing Role: Low-noise in-amp amplifies biopotential signals with integrated antialiasing to meet IEC 60601-2-51 requirements. Use Value: 1.8 V operation extends battery life; small SOT-23-8 footprint enables multi-channel electrode integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar instrumentation amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8237ARMZ-R7 | Same 8-lead MSOP package, but programmable gain (1–1000) and no integrated filter resistors; higher 1.8 μVp-p noise | Requires external gain-setting and antialiasing components; better for variable-gain sensor interfaces | Select AD8237ARMZ-R7 when gain flexibility outweighs board-area savings and lowest noise is not critical |
| INA333AIDRGT | 3 V to 5.5 V supply only; 25 μV max offset; no integrated R1/R2/R3; 50 nV/√Hz noise density at 1 kHz | Lacks built-in antialiasing path; requires external reference buffer for optimal CMR | Choose INA333AIDRGT for cost-sensitive designs where external passive count is acceptable and 5 V-only operation suffices |
Compared with AD8293G80ARJZ-R7, AD8237ARMZ-R7 trades integrated filtering for gain configurability, while INA333AIDRGT offers lower cost at the expense of added external components and reduced low-frequency noise performance.
Availability
AD8293G80ARJZ-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 AD8293G80ARJZ-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, serving industrial, automotive, communications, and healthcare markets.
The AD8293Gxx family was designed specifically for low-power, space-constrained precision signal conditioning in portable and battery-operated instrumentation, integrating filtering and reference functions to minimize external component count.
FAQ
What is the maximum supply voltage for AD8293G80ARJZ-R7?
The absolute maximum supply voltage for AD8293G80ARJZ-R7 is 6 V, but the recommended operating range is 1.8 V to 5.5 V. Operation above 5.5 V risks permanent damage, while operation below 1.8 V may cause degraded CMR and increased offset error. Always use a 0.1 μF ceramic capacitor between +VS and GND to suppress internal clock ripple.
How does the ADC OUT pin differ from the OUT pin on AD8293G80ARJZ-R7?
The ADC OUT pin (Pin 4) of AD8293G80ARJZ-R7 includes an integrated 5 kΩ series resistor, forming a second-order antialiasing filter with an external capacitor (e.g., 39 nF). The OUT pin (Pin 6) provides the unfiltered, direct instrumentation amplifier output. Use ADC OUT when connecting to an ADC input; use OUT when minimal phase delay or full bandwidth is required.
Can AD8293G80ARJZ-R7 operate with a 1.8 V supply and still achieve rail-to-rail output?
Yes, AD8293G80ARJZ-R7 supports true rail-to-rail output swing down to 1.8 V supply, delivering VOH ≥ VCC − 0.075 V and VOL ≤ 0.075 V into 10 kΩ loads. This capability enables direct interfacing with low-voltage ADCs and microcontrollers without level-shifting circuitry, preserving dynamic range in battery-powered systems.
What external capacitors are required to configure the 500 Hz filter for AD8293G80ARJZ-R7?
To configure the 500 Hz filter for AD8293G80ARJZ-R7, place 1300 pF between FILT (Pin 5) and OUT (Pin 6) for the primary filter, and 39 nF between ADC OUT (Pin 4) and GND for the secondary antialiasing filter. These values are validated per Analog Devices' Application Note AN-1222 and ensure optimal noise suppression and step response.
Is the REF pin of AD8293G80ARJZ-R7 internally buffered, and what is its input current?
Yes, the REF pin (Pin 3) of AD8293G80ARJZ-R7 is internally buffered, with a typical input current of 0.01 nA and maximum of 1 nA. This allows direct connection to resistive voltage dividers without degrading CMR, eliminating the need for an external op-amp buffer-a key differentiator from traditional 3-op-amp instrumentation amplifiers.
AD8293G80ARJZ-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
AD8293G80ARJZ-R7 FAQ
1.How can I place an order for AD8293G80ARJZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8293G80ARJZ-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 AD8293G80ARJZ-R7 reliable?
The price and inventory of AD8293G80ARJZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8293G80ARJZ-R7 is usually 5 days.
3.What payment methods are accepted for AD8293G80ARJZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8293G80ARJZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8293G80ARJZ-R7?
AD8293G80ARJZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8293G80ARJZ-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 AD8293G80ARJZ-R7?
For technical support, including AD8293G80ARJZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8293G80ARJZ-R7 requirements.
6.How does Aetrix verify that AD8293G80ARJZ-R7 is sourced from the original manufacturer or authorized distributors?
All AD8293G80ARJZ-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 AD8293G80ARJZ-R7 meets industry standards.
7.What is the process for return or replacement of AD8293G80ARJZ-R7?
All AD8293G80ARJZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with AD8293G80ARJZ-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 AD8293G80ARJZ-R7 part is unused and in its original packaging.
Return procedure for AD8293G80ARJZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD8293G80ARJZ-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…
