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Analog Devices Inc. ADA4000-2ARZ-R7
- Part No.:
- ADA4000-2ARZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADA4000-2ARZ-R7.pdf
- Description:
- IC OPAMP JFET 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:814
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Product details
Overview
ADA4000-2ARZ-R7 from Analog Devices is a dual-channel, JFET-input precision operational amplifier optimized for high-impedance signal conditioning and data acquisition. It delivers 5 MHz gain bandwidth, 20 V/µs slew rate, ±4 V to ±18 V supply operation, and 1.70 mV max offset voltage - enabling accurate buffering of ADC inputs and DAC outputs in industrial sensor interfaces.
For engineers reviewing the ADA4000-2ARZ-R7 datasheet, ADA4000-2ARZ-R7 pinout, ADA4000-2ARZ-R7 application, or ADA4000-2ARZ-R7 equivalent, key selection considerations include its rail-to-rail input common-mode range (including +VS), ultra-low 40 pA max input bias current, and stability driving up to 1000 pF capacitive loads in unity-gain configurations.
Technical Context
The ADA4000-2ARZ-R7 employs a JFET input stage delivering 103 GΩ||5.5 pF common-mode input impedance and 10 GΩ||4 pF differential input impedance. Its architecture supports single-supply operation with input common-mode voltage extending to +VS, making it suitable for high-side sensing without level-shifting circuitry.
It achieves 0.1% settling in <1.2 µs with 10 V step input, maintains 60° phase margin at ±15 V, and exhibits low 16 nV/√Hz voltage noise density at 1 kHz - critical for precision DC-coupled amplification and active filter design in instrumentation-grade systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 5 MHz - enables stable closed-loop operation up to 5× gain at 1 MHz, suitable for anti-aliasing filters and fast-settling signal chains. |
| Slew Rate | 20 V/µs - supports full-scale 10 V transitions in under 500 ns, essential for high-speed data acquisition front-ends. |
| Input Bias Current | 40 pA maximum at 25°C - preserves signal integrity in high-impedance photodiode, piezoelectric, or pH electrode interfaces. |
| Offset Voltage | 1.70 mV maximum - ensures ≤0.017% error in 10 V full-scale measurements without trimming. |
| Supply Range | ±4 V to ±18 V - accommodates both low-voltage portable systems and industrial ±15 V rails without external regulators. |
| Input Common-Mode Range | Includes +VS - allows direct connection to high-side current-sense resistors or reference buffers without clamping diodes. |
| Capacitive Load Drive | Stable with up to 1000 pF - eliminates need for isolation resistors when driving ADC sample-and-hold inputs or long PCB traces. |
Pinout & Package
ADA4000-2ARZ-R7 is packaged in an 8-lead SOIC_N (R-8) with standard pinout and no internal connections on pins 1 and 8. The package measures 5.00 mm × 4.00 mm × 1.50 mm and is RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No Connect | Unused pad; must remain unconnected to avoid parasitic coupling or latch-up risk. |
| 2 (–IN A) | Inverting Input, Channel A | High-impedance JFET node; bias current ≤40 pA enables direct connection to high-Z sources. |
| 3 (+IN A) | Non-Inverting Input, Channel A | Common-mode range extends to +VS; supports high-side sensing without level shifters. |
| 4 (–V) | Negative Supply Rail | Accepts –4 V to –18 V; requires local 0.1 µF bypass capacitor for PSRR optimization. |
| 5 (+V) | Positive Supply Rail | Accepts +4 V to +18 V; shares same thermal and layout constraints as –V for symmetry. |
| 6 (+IN B) | Non-Inverting Input, Channel B | Independent high-Z input identical to Pin 3; enables dual-channel differential or independent signal paths. |
| 7 (–IN B) | Inverting Input, Channel B | Matches Pin 2 performance; supports matched dual-channel configurations like instrumentation amps. |
| 8 (NC) | No Connect | Unused pad; floating connection prevents unintended feedback or EMI pickup. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable | Operates without external compensation in gain = 1 configurations - simplifies design of reference buffers and voltage followers. |
| Rail-to-rail input including +VS | Enables direct interface to sensors referenced to positive supply - eliminates level-shifting components in high-side current monitoring. |
| Low 16 nV/√Hz voltage noise | Minimizes contribution to system noise floor in precision DC amplifiers and low-frequency active filters. |
| Fast 1.2 µs 0.1% settling time | Reduces dead time between successive ADC conversions - improves throughput in multi-channel data loggers. |
| 40 pA max input bias current | Maintains accuracy in high-impedance transducer interfaces (e.g., >10 MΩ source impedances) without significant offset drift. |
Applications
| Reference Buffering | Power Line Monitoring |
|---|---|
|
Use Scenario: Buffering precision voltage references (e.g., REF5025) to multiple ADC channels while maintaining <1 ppm drift. IC Role / Device Role / Timing Role: Dual-channel voltage follower isolating reference output from load variations and PCB trace capacitance. Use Value: 1.70 mV max offset and 2 µV/°C drift ensure reference accuracy remains within 0.01% over –40°C to +125°C industrial temperature range. |
Use Scenario: High-side current sensing across shunt resistors in 3-phase AC power metering systems. IC Role / Device Role / Timing Role: Differential amplifier front-end with input common-mode voltage referenced to line potential (up to +18 V). Use Value: Input range including +VS eliminates need for isolated amplifiers or level-shifters, reducing BOM count and isolation complexity. |
| Data Acquisition Front-End | Active Filter Design |
|
Use Scenario: Signal conditioning before SAR or sigma-delta ADCs in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Dual-channel gain stage and anti-aliasing filter driver with matched channel performance. Use Value: 5 MHz bandwidth and 20 V/µs slew rate support 16-bit resolution at ≥100 kSPS sampling rates with minimal settling error. |
Use Scenario: Second-order Sallen-Key low-pass filter in phase-locked loop (PLL) reference path for clock jitter reduction. IC Role / Device Role / Timing Role: Unity-gain stable amplifier implementing filter transfer function with low noise and minimal phase distortion. Use Value: 16 nV/√Hz noise density and 60° phase margin prevent noise folding and instability in narrowband timing applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision JFET op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2134PA | Higher 8 MHz GBW but 50 pA max input bias current; 12 nV/√Hz noise at 1 kHz. | Better for audio-grade filtering; less optimal for ultra-high-Z sensor interfaces requiring sub-50 pA bias. | Choose OPA2134PA when higher bandwidth and lower noise outweigh ultra-low bias current requirements. |
| TL072CDR | Lower cost; 200 pA max input bias current; 18 V/µs slew rate; not specified for 125°C operation. | Suitable for commercial-grade instrumentation; not qualified for extended temperature industrial use. | Choose TL072CDR only for cost-sensitive, non-extended-temp applications where 200 pA bias is acceptable. |
Compared with OPA2134PA and TL072CDR, ADA4000-2ARZ-R7 uniquely balances ultra-low 40 pA bias current, guaranteed 125°C operation, and robust 1000 pF capacitive load drive - making it the preferred choice for high-reliability industrial sensor signal chains where input impedance and temperature range are critical.
Availability
ADA4000-2ARZ-R7 is available at Aetrix Electronics and suitable for industrial sensor interfaces, PLC analog input modules, and precision reference buffering requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADA4000-2ARZ-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 since 1965.
The ADA4000 family was designed specifically for precision, low-bias-current signal conditioning in harsh industrial environments - emphasizing rail-to-rail input operation, wide supply range, and robust capacitive load drive capability.
FAQ
What is the operating temperature range for ADA4000-2ARZ-R7?
The ADA4000-2ARZ-R7 is rated for continuous operation from –40°C to +125°C. This extended temperature range is validated per the Absolute Maximum Ratings table and Electrical Characteristics specifications across the full range, making ADA4000-2ARZ-R7 suitable for under-hood automotive sensors, industrial motor drives, and outdoor metering equipment where ambient temperatures exceed standard commercial limits.
Does ADA4000-2ARZ-R7 support single-supply operation?
Yes, ADA4000-2ARZ-R7 supports true single-supply operation. Its input common-mode voltage range extends to the positive supply rail (+VS), and output swing reaches within 1.4 V of each rail under 2 kΩ load. For example, with +5 V and ground supplies, ADA4000-2ARZ-R7 accepts inputs from 0 V to +5 V and delivers outputs from ~0.3 V to ~4.2 V - enabling direct interfacing with microcontroller ADCs and reference buffers without negative rails.
Can ADA4000-2ARZ-R7 drive large capacitive loads without oscillation?
Yes, ADA4000-2ARZ-R7 is stable driving up to 1000 pF in unity-gain configuration, as confirmed in the Capacitive Load Drive section of the datasheet. This capability eliminates the need for series isolation resistors when driving ADC sample-and-hold capacitors or long PCB traces. For loads exceeding 1000 pF, a snubber network (e.g., 41 Ω + 10 nF) reduces overshoot from 30% to 6%, as demonstrated in Figure 32 of the datasheet.
What is the typical supply current per amplifier for ADA4000-2ARZ-R7?
The typical supply current per amplifier for ADA4000-2ARZ-R7 is 1.65 mA at 25°C with ±15 V supplies, and 1.35 mA with ±5 V supplies. Over the full –40°C to +125°C range, maximum supply current per amplifier is 1.80 mA. This low quiescent current enables use in power-constrained applications such as battery-operated data loggers while maintaining precision performance.
Is ADA4000-2ARZ-R7 pin-compatible with other dual op-amps in SOIC-8 packages?
No, ADA4000-2ARZ-R7 is not pin-compatible with generic dual op-amps like LM358 or TL072. Its SOIC-8 pinout places NC on Pins 1 and 8, with dual independent amplifier sections arranged as (NC, –IN A, +IN A, –V, +V, +IN B, –IN B, NC). This differs from industry-standard dual op-amp layouts and requires dedicated PCB layout - confirming that ADA4000-2ARZ-R7 must be designed-in using its specific footprint and routing guidelines.
ADA4000-2ARZ-R7 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:
- J-FET
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 20V/µs
- Gain Bandwidth Product:
- 5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 1.35mA (x2 Channels)
- Current - Output / Channel:
- 28 mA
- Voltage - Supply Span (Min):
- 8 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ADA4000-2ARZ-R7 FAQ
1.How can I place an order for ADA4000-2ARZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4000-2ARZ-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 ADA4000-2ARZ-R7 reliable?
The price and inventory of ADA4000-2ARZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4000-2ARZ-R7 is usually 5 days.
3.What payment methods are accepted for ADA4000-2ARZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4000-2ARZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4000-2ARZ-R7?
ADA4000-2ARZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4000-2ARZ-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 ADA4000-2ARZ-R7?
For technical support, including ADA4000-2ARZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4000-2ARZ-R7 requirements.
6.How does Aetrix verify that ADA4000-2ARZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADA4000-2ARZ-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 ADA4000-2ARZ-R7 meets industry standards.
7.What is the process for return or replacement of ADA4000-2ARZ-R7?
All ADA4000-2ARZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4000-2ARZ-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 ADA4000-2ARZ-R7 part is unused and in its original packaging.
Return procedure for ADA4000-2ARZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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