My Inquiry
My Account
Analog Devices Inc. AD8031ARZ-REEL
- Part No.:
- AD8031ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD8031ARZ-REEL.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,776
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD8031ARZ-REEL from Analog Devices is a single-channel, rail-to-rail input/output voltage-feedback operational amplifier optimized for high-speed, low-power applications. It delivers 80 MHz −3 dB bandwidth (G = +1), 30 V/μs slew rate, and 125 ns settling time to 0.1%, operating from a single 2.7 V supply with only 800 μA quiescent current per amplifier. It serves as an A/D converter buffer in portable test instruments and battery-powered signal conditioning systems.
For engineers reviewing the AD8031ARZ-REEL datasheet, AD8031ARZ-REEL pinout, AD8031ARZ-REEL application, or AD8031ARZ-REEL equivalent, key selection criteria include rail-to-rail output swing within 20 mV of rails at light load, input common-mode range extending 200 mV beyond supplies, THD of −62 dBc at 1 MHz, and SOIC-8 package compatibility with industrial temperature operation (−40°C to +85°C).
Technical Context
The AD8031ARZ-REEL employs a proprietary eXtra Fast Complementary Bipolar (XFCB) process and dual-input-stage architecture-switching between PNP and NPN differential pairs-to maintain transconductance and bandwidth across rail-to-rail input common-mode range (−0.2 V to +2.9 V on 2.7 V supply). This eliminates phase reversal up to 500 mV beyond supply rails.
Its rail-to-rail output stage uses common-emitter transistors with ~25 Ω effective collector resistance, enabling 20 mV output swing to either rail under 10 kΩ load while sustaining 15 mA output current. Open-loop gain remains stable within 250 mV of VCC and 150 mV of VEE, then degrades linearly into saturation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 80 MHz at G = +1 - supports high-fidelity signal acquisition up to ~13 MHz Nyquist frequency for 12-bit ADC buffering |
| Slew Rate | 30 V/μs - enables full-scale 2 Vp-p step response in ≤67 ns without slewing distortion |
| Settling Time | 125 ns to 0.1% - meets timing budget for >1 MSPS sampling systems with minimal acquisition window overhead |
| Supply Current | 800 μA per amplifier - allows 12+ channels on a 10 mA rail in portable instrumentation |
| Input CMVR | −0.2 V to +2.9 V on 2.7 V supply - accepts signals 200 mV beyond rails, simplifying level-shifting in single-supply front-ends |
| Output Swing | Within 20 mV of either rail (RL = 10 kΩ) - maximizes dynamic range for 2.7 V ADCs with 0–2.7 V input range |
| THD | −62 dBc at 1 MHz, 2 Vp-p - preserves SNR in wideband sensor signal chains feeding precision ADCs |
Pinout & Package
AD8031ARZ-REEL is housed in an 8-lead SOIC_N (R) package (body width 3.9 mm, JEDEC MS-012AA), RoHS-compliant and rated for −40°C to +85°C industrial operation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect | Internally unused; must be left floating or tied to ground per layout best practice |
| 2 | Inverting Input (−IN) | Differential input node; high-impedance (280 kΩ diff, 40 MΩ common-mode) with rail-to-rail voltage range |
| 3 | Non-Inverting Input (+IN) | Differential input node; identical impedance and voltage range as −IN; no phase reversal up to 500 mV beyond rails |
| 4 | Negative Supply (−VS) | Ground reference for single-supply operation; connects to system GND when VS = +2.7 V |
| 5 | No Connect | Internally unused; must be left floating or tied to ground |
| 6 | Output (OUT) | Rail-to-rail output capable of sourcing/sinking 15 mA; swings to within 20 mV of rails under light load |
| 7 | Positive Supply (+VS) | Primary power pin; supports 2.7 V to 12 V single supply or ±1.35 V to ±6 V dual supply |
| 8 | No Connect | Internally unused; must be left floating or tied to ground |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Input CMVR extends 200 mV beyond supplies; output swings to within 20 mV of rails - eliminates need for level-shifting circuitry in 2.7 V systems |
| Low power / high speed | 80 MHz bandwidth at only 800 μA - achieves performance comparable to 3 mA amplifiers while reducing thermal load and battery drain |
| No phase reversal | Operates linearly with inputs up to 500 mV beyond supply rails - prevents signal corruption in overvoltage transient conditions |
| High output drive | 15 mA continuous output current - directly drives 10 kΩ ADC inputs or 50 Ω cables without external buffers |
| Low distortion | −62 dBc THD at 1 MHz - maintains signal integrity in wideband active filters and video line drivers |
Applications
| Portable Test Instrumentation | A/D Converter Buffering |
|---|---|
Use Scenario: Handheld oscilloscope front-end amplifying sensor outputs before digitization. IC Role / Device Role / Timing Role: Signal-conditioning amplifier with unity-gain configuration driving 12-bit SAR ADC at 1 MSPS. Use Value: 125 ns settling ensures <1 LSB error during acquisition; rail-to-rail output matches 0–2.7 V ADC input range without external biasing. | Use Scenario: Isolating microcontroller analog inputs from noisy digital domains in battery-powered data loggers. IC Role / Device Role / Timing Role: Low-noise, low-power buffer isolating ADC sample-and-hold input from source impedance variations. Use Value: 800 μA supply current extends battery life; 15 nV/√Hz input voltage noise preserves resolution in sub-100 μV signal measurements. |
| Single-Supply Active Filters | High-Speed Set-and-Forget Amplifiers |
Use Scenario: 2 MHz biquad band-pass filter in portable spectrum analyzers. IC Role / Device Role / Timing Role: Gain block in second-order filter topology requiring stable phase margin and low THD. Use Value: −62 dBc THD at 1 MHz and 80 MHz bandwidth enable clean passband response; rail-to-rail output avoids clipping on ±1 V filtered signals. | Use Scenario: Driving reference voltages to multiple precision DACs in automated test equipment. IC Role / Device Role / Timing Role: Unity-gain follower providing low-impedance, fast-settling reference distribution. Use Value: 30 V/μs slew rate settles 2 V steps in <67 ns; output swing to within 20 mV of 2.7 V rail ensures full DAC code utilization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-power op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4807-1ARZ-R7 | Lower 1 nV/√Hz input voltage noise; higher 100 MHz bandwidth; 1.3 mA supply current | Better suited for ultra-low-noise sensor interfaces; less optimal for strict <1 mA power budgets | Select ADA4807-1ARZ-R7 when noise performance dominates over quiescent current |
| OPA355UA | Higher 200 MHz bandwidth; 5.5 mA supply current; non-rail-to-rail input (CMVR = −0.2 V to VCC − 1.2 V) | Preferred for RF signal chain stages requiring >100 MHz; incompatible with inputs near VCC | Select OPA355UA only when bandwidth >150 MHz is required and input signals stay ≥1.2 V below VCC |
Compared with ADA4807-1ARZ-R7 and OPA355UA, AD8031ARZ-REEL uniquely balances 80 MHz bandwidth, rail-to-rail I/O, and sub-1 mA supply current - making it the optimal choice for space-constrained, battery-operated instrumentation where power efficiency and input voltage flexibility are critical.
Availability
AD8031ARZ-REEL is available at Aetrix Electronics and suitable for portable test instruments, battery-powered data acquisition systems, and high-density analog front-ends requiring stable component supply and industrial temperature grade performance.
Supply support for AD8031ARZ-REEL 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 AD8031 forms part of Analog Devices' high-speed, low-power op-amp product line designed specifically for single-supply, rail-to-rail signal conditioning in portable and space-constrained instrumentation systems.
FAQ
What supply voltage range does the AD8031ARZ-REEL support?
The AD8031ARZ-REEL operates from a single 2.7 V to 12 V supply or dual ±1.35 V to ±6 V supplies. It is fully specified at +2.7 V, +5 V, and ±5 V. At 2.7 V, it delivers 80 MHz bandwidth and 30 V/μs slew rate while consuming only 800 μA - making AD8031ARZ-REEL ideal for coin-cell or Li-ion powered devices where headroom is constrained.
Does the AD8031ARZ-REEL have rail-to-rail input and output capability?
Yes, the AD8031ARZ-REEL features true rail-to-rail input and output. Its input common-mode voltage range extends from −0.2 V to +2.9 V on a +2.7 V supply (200 mV beyond rails), and its output swings to within 20 mV of either rail under 10 kΩ load. This eliminates external level-shifting components and maximizes dynamic range in low-voltage ADC interfaces - a core design advantage of the AD8031ARZ-REEL.
What is the typical total harmonic distortion (THD) performance of the AD8031ARZ-REEL?
The AD8031ARZ-REEL achieves −62 dBc THD at 1 MHz with a 2 Vp-p output signal and −86 dBc at 100 kHz with a 4.6 Vp-p signal on +5 V supply. These values are measured under standard conditions (G = +2, RL = 1 kΩ) and confirm AD8031ARZ-REEL's suitability for high-fidelity signal paths such as active filters and video line drivers where spectral purity is essential.
Can the AD8031ARZ-REEL drive capacitive loads?
The AD8031ARZ-REEL can safely drive up to 15 pF capacitive loads in G = +2 configuration, as verified in Figure 46 of the datasheet. For larger loads (e.g., ADC input capacitance + PCB trace), a small series resistor (10–50 Ω) at the output is recommended to maintain stability. This capability makes AD8031ARZ-REEL robust in real-world layouts where parasitic capacitance is unavoidable.
What is the maximum output current rating for the AD8031ARZ-REEL?
The AD8031ARZ-REEL provides ±15 mA continuous output current, with short-circuit sourcing capability of +28 mA and sinking capability of −46 mA (at +5 V supply). This allows direct driving of moderate-impedance loads like 10 kΩ ADC inputs or terminated 50 Ω transmission lines - reducing bill-of-materials count and board area compared to solutions requiring external buffers.
AD8031ARZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 35V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 80 MHz
- Current - Input Bias:
- 450 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 900µA
- Current - Output / Channel:
- 15 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD8031ARZ-REEL FAQ
1.How can I place an order for AD8031ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD8031ARZ-REEL 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 AD8031ARZ-REEL reliable?
The price and inventory of AD8031ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD8031ARZ-REEL is usually 5 days.
3.What payment methods are accepted for AD8031ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD8031ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD8031ARZ-REEL?
AD8031ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD8031ARZ-REEL 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 AD8031ARZ-REEL?
For technical support, including AD8031ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD8031ARZ-REEL requirements.
6.How does Aetrix verify that AD8031ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD8031ARZ-REEL 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 AD8031ARZ-REEL meets industry standards.
7.What is the process for return or replacement of AD8031ARZ-REEL?
All AD8031ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD8031ARZ-REEL, 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 AD8031ARZ-REEL part is unused and in its original packaging.
Return procedure for AD8031ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD8031ARZ-REEL 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…
