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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Analog Devices Inc. ADA4000-4ARUZ-RL

Name: ADA4000-4ARUZ-RL
Brand: Analog Devices Inc.
SKU: ADA4000-4ARUZ-RL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADA4000-4ARUZ-RL

Manufacturer:: Analog Devices Inc.

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-TSSOP (0.173", 4.40mm Width)

Datasheet:: ADA4000-4ARUZ-RL.pdf

Description:: IC OPAMP JFET 4 CIRCUIT 14TSSOP

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Product details

Overview

ADA4000-4ARUZ-RL from Analog Devices is a quad-channel, JFET-input precision operational amplifier optimized for high-impedance signal conditioning and data acquisition. It delivers 5 MHz bandwidth, 20 V/µs slew rate, 1.7 mV max offset voltage, and 40 pA max input bias current at ±15 V supply, enabling accurate buffering of DAC outputs and ADC inputs in industrial sensor interfaces.

For engineers reviewing the ADA4000-4ARUZ-RL datasheet, ADA4000-4ARUZ-RL pinout, ADA4000-4ARUZ-RL application, or ADA4000-4ARUZ-RL equivalent, key selection criteria include its rail-to-rail input common-mode range (including +V_S), low 16 nV/√Hz voltage noise, unity-gain stability with up to 1000 pF capacitive load drive, and guaranteed operation from −40°C to +125°C.

Technical Context

The ADA4000-4ARUZ-RL implements a JFET-input differential pair with high-impedance, low-leakage input stage (103 GΩ||5.5 pF common-mode impedance), enabling precision measurement of high-impedance sources without loading error. Its internal compensation ensures unity-gain stability while maintaining 60° phase margin at ±15 V.

It supports dual-supply operation from ±4 V to ±18 V, features output swing within 1.4 V of rails at 2 kΩ load, and exhibits no phase reversal when common-mode voltage exceeds +V_S-a known risk mitigated by design-level input stage saturation control per datasheet Figure 7–12 analysis.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain Bandwidth Product	5 MHz - Enables stable closed-loop gain ≥10 at 500 kHz, suitable for anti-aliasing and reconstruction filters.
Slew Rate	20 V/µs - Supports full-scale 10 V step response settling in <1.2 µs to 0.1%, critical for fast DAC output buffering.
Input Bias Current	40 pA max - Minimizes voltage error across >10 MΩ source impedances, essential for photodiode and piezoelectric sensor interfaces.
Offset Voltage	1.7 mV max - Limits DC error to <0.017% of 10 V full scale, meeting 12-bit accuracy requirements without trimming.
Voltage Noise Density	16 nV/√Hz @ 1 kHz - Dominates total input-referred noise in medium-bandwidth (<100 kHz) precision amplification stages.
Common-Mode Input Range	Includes +V_S - Allows direct high-side current sensing and level-shifting from positive rails without external attenuation.
Supply Current per Amp	1.65 mA typ - Enables four-channel operation at <6.6 mA total, suitable for power-constrained portable instrumentation.

Pinout & Package

ADA4000-4ARUZ-RL is housed in a 14-lead TSSOP (RU-14) package, 5.0 mm × 4.4 mm × 1.2 mm, with exposed pad for thermal enhancement and RoHS-compliant matte tin lead finish.

Pin/Terminal	Circuit Role	Design Meaning
1	OUT A	Inverting amplifier output; drives 2 kΩ load to ±13.9 V (±15 V supply) with <1.2 µs 0.1% settling.
2	−IN A	Inverting input node; accepts signals up to +15 V common-mode with 80 dB CMRR at dc.
3	+IN A	Non-inverting input node; enables high-Z buffer configuration with input bias current ≤40 pA.
4	−V	Negative supply rail; must be established before input signals to prevent latch-up per Power Sequencing section.
5	+IN B	Non-inverting input of Channel B; electrically isolated from Channel A; shares same supply pins.
6	−IN B	Inverting input of Channel B; supports independent feedback networks per channel.
7	OUT B	Output of Channel B; identical AC/DC specs to OUT A; no crosstalk specification given but layout-dependent.
8	OUT C	Output of Channel C; pin-compatible with OUT A/B; allows simultaneous 3-channel signal processing.
9	−IN C	Inverting input of Channel C; referenced to same −V/+V rails; requires individual decoupling if driving different loads.
10	+IN C	Non-inverting input of Channel C; supports rail-to-rail input common-mode including +V_S.
11	−V	Shared negative supply pin; connects internally to all four amplifiers' negative supply terminals.
12	+IN D	Non-inverting input of Channel D; completes quad-channel set; identical electrical specs to other +IN pins.
13	−IN D	Inverting input of Channel D; enables fourth independent gain stage with matched offset and noise.
14	OUT D	Output of Channel D; provides fourth buffered output; supports 1000 pF capacitive load in unity gain.

Key Features

Feature	Design Value
Rail-to-rail input common-mode range including +V_S	Enables direct high-side current sensing and level shifting from positive supply without attenuator networks.
Unity-gain stable with 1000 pF capacitive load drive	Eliminates need for external isolation resistors when driving ADC sample-and-hold capacitors or long cables.
Low 16 nV/√Hz voltage noise at 1 kHz	Preserves SNR in 12-bit+ data acquisition systems where amplifier noise dominates sensor interface noise floor.
Guaranteed −40°C to +125°C operation	Supports deployment in automotive engine control units, industrial motor drives, and outdoor instrumentation.
40 pA max input bias current at 25°C	Reduces voltage error to <400 µV across 10 MΩ source impedance, critical for pH and ion-selective electrode amplifiers.

Applications

Reference Gain/Buffering	Power Line Monitoring
Use Scenario: Buffering precision voltage references (e.g., REF5025) to multiple ADC channels in energy metering ICs. IC Role / Device Role / Timing Role: Quad op-amp provides four isolated, low-drift gain stages with matched offset and drift across channels. Use Value: Maintains reference integrity under varying load conditions; 1.7 mV max offset ensures <0.017% full-scale error in 10 V reference distribution.	Use Scenario: Isolating and scaling 0–1000 V ac line voltages via resistive divider into isolation amplifier inputs. IC Role / Device Role / Timing Role: High-input-impedance buffer prevents divider loading; common-mode range includes +V_S enables direct connection to positive rail-referenced dividers. Use Value: Eliminates need for level-shifting op-amps or attenuators; 40 pA bias current avoids divider ratio error beyond 0.001%.
Current/Voltage Sense	Data Acquisition Front-End
Use Scenario: Amplifying mV-level shunt resistor voltage drops in motor phase current monitoring. IC Role / Device Role / Timing Role: Precision instrumentation-grade buffer with low offset and drift; configured as non-inverting amplifier with gain = 100. Use Value: 2 µV/°C offset drift limits temperature-induced error to <250 µV over 125°C range, preserving 12-bit resolution.	Use Scenario: Driving SAR ADC inputs (e.g., AD7980) in multi-channel industrial PLC analog input modules. IC Role / Device Role / Timing Role: Quad-channel track-and-hold driver; each amplifier conditions one sensor channel before multiplexed sampling. Use Value: 1.2 µs 0.1% settling time matches typical 1 MSPS ADC aperture times; 20 V/µs slew rate prevents slewing-induced distortion.

Reference Gain/Buffering

Power Line Monitoring

Use Scenario: Buffering precision voltage references (e.g., REF5025) to multiple ADC channels in energy metering ICs.

IC Role / Device Role / Timing Role: Quad op-amp provides four isolated, low-drift gain stages with matched offset and drift across channels.

Use Value: Maintains reference integrity under varying load conditions; 1.7 mV max offset ensures <0.017% full-scale error in 10 V reference distribution.

Use Scenario: Isolating and scaling 0–1000 V ac line voltages via resistive divider into isolation amplifier inputs.

IC Role / Device Role / Timing Role: High-input-impedance buffer prevents divider loading; common-mode range includes +V_S enables direct connection to positive rail-referenced dividers.

Use Value: Eliminates need for level-shifting op-amps or attenuators; 40 pA bias current avoids divider ratio error beyond 0.001%.

Current/Voltage Sense

Data Acquisition Front-End

Use Scenario: Amplifying mV-level shunt resistor voltage drops in motor phase current monitoring.

IC Role / Device Role / Timing Role: Precision instrumentation-grade buffer with low offset and drift; configured as non-inverting amplifier with gain = 100.

Use Value: 2 µV/°C offset drift limits temperature-induced error to <250 µV over 125°C range, preserving 12-bit resolution.

Use Scenario: Driving SAR ADC inputs (e.g., AD7980) in multi-channel industrial PLC analog input modules.

IC Role / Device Role / Timing Role: Quad-channel track-and-hold driver; each amplifier conditions one sensor channel before multiplexed sampling.

Use Value: 1.2 µs 0.1% settling time matches typical 1 MSPS ADC aperture times; 20 V/µs slew rate prevents slewing-induced distortion.

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision JFET-input op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AD823ARZ	Single 16 MHz GBW, 25 V/µs slew, 250 µV max V_OS, 1 pA IB - higher speed but lower precision and no +V_S input range.	Preferred for wideband active filters; unsuitable for high-side sensing due to limited common-mode range.	Select AD823ARZ only when bandwidth >5 MHz is required and input common-mode does not exceed +V_S − 1.5 V.
OPA4141AIPWR	Quad 11 MHz GBW, 20 V/µs slew, 125 µV max V_OS, 10 pA IB - superior offset but narrower common-mode range (to +V_S − 1.5 V).	Better for low-offset, low-noise sensor front-ends where rail-to-rail input is not needed.	Choose OPA4141AIPWR when sub-125 µV offset is mandatory and high-side sensing is absent.

Compared with AD823ARZ and OPA4141AIPWR, ADA4000-4ARUZ-RL uniquely combines quad-channel integration, +V_S-inclusive input range, and 40 pA bias current - making it the only option among the three qualified for high-impedance, high-side signal conditioning in compact 14-lead TSSOP layouts.

Availability

ADA4000-4ARUZ-RL is available at Aetrix Electronics and suitable for industrial sensor interfaces, energy metering front-ends, and motor current monitoring systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADA4000-4ARUZ-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The ADA4000 family was designed specifically for precision signal conditioning in high-impedance, wide-temperature industrial and instrumentation applications - emphasizing low bias current, rail-to-rail input capability, and robust capacitive load drive.

FAQ

What is the maximum capacitive load the ADA4000-4ARUZ-RL can drive in unity-gain configuration without oscillation?

The ADA4000-4ARUZ-RL is specified to drive up to 1000 pF of capacitive load in unity-gain configuration without oscillation, as confirmed in the Capacitive Load Drive section of the Rev. B datasheet. This capability eliminates external isolation resistors when interfacing with 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% per Figure 32. The ADA4000-4ARUZ-RL's internal compensation ensures stability across all gains.

Does the ADA4000-4ARUZ-RL support single-supply operation?

The ADA4000-4ARUZ-RL is specified for dual-supply operation from ±4 V to ±18 V and does not support true single-supply operation. Its input common-mode range includes +V_S but not ground when operated on single-ended supplies; the minimum recommended supply is ±4 V. Attempting single-supply use (e.g., 0 V/−5 V or 0 V/+15 V) violates Absolute Maximum Ratings for input voltage and may cause phase reversal or damage. The ADA4000-4ARUZ-RL requires symmetric dual rails for guaranteed performance across −40°C to +125°C.

What is the guaranteed offset voltage drift over temperature for ADA4000-4ARUZ-RL?

The ADA4000-4ARUZ-RL has a guaranteed offset voltage drift of 2 µV/°C over the full operating temperature range of −40°C to +125°C, as specified in Table 1 and validated in Figure 8 of the Rev. B datasheet. This low drift ensures minimal temperature-induced error: for example, a 10 V full-scale system experiences <250 µV additional offset error over the entire range. This value is measured under ±15 V supply conditions and applies identically to all four channels within the same device.

How does the ADA4000-4ARUZ-RL handle input overvoltage conditions that exceed the common-mode range?

When input voltage exceeds the ADA4000-4ARUZ-RL's common-mode range (e.g., >+V_S), the device exhibits temporary phase reversal - a polarity inversion in the transfer function caused by saturation of the JFET input stage and forward-biasing of drain-gate diodes. Per Applications Information section, this effect is self-recovering: normal operation resumes once common-mode voltage returns within spec. To prevent it, Analog Devices recommends limiting input current to <5 mA and adding a series resistor at the non-inverting input - though this increases total input noise per the given noise density equation. The ADA4000-4ARUZ-RL does not include internal overvoltage protection circuitry.

Is the ADA4000-4ARUZ-RL pin-compatible with other packages in the ADA4000-4 family?

No, the ADA4000-4ARUZ-RL (14-lead TSSOP, RU-14) is not pin-compatible with the ADA4000-4ARZ variants (14-lead SOIC, R-14), despite identical pin functions and numbering. Physical dimensions differ: RU-14 is 5.0 mm × 4.4 mm with 0.65 mm pitch, while R-14 is 8.75 mm × 4.0 mm with 1.27 mm pitch. Pin 1 identifiers and coplanarity specs also differ (RU-14: 0.10 mm max; R-14: 0.10 mm max). Layout redesign is required when migrating between these packages. The ADA4000-4ARUZ-RL shares pinout with no other ADA4000-4 variant.

ADA4000-4ARUZ-RL Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 14-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: J-FET

Number of Circuits:: 4

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 (x4 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:: 14-TSSOP

ADA4000-4ARUZ-RL FAQ

1.How can I place an order for ADA4000-4ARUZ-RL through Aetrix?

Please submit a Request for Quotation (RFQ) for ADA4000-4ARUZ-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 ADA4000-4ARUZ-RL reliable?

The price and inventory of ADA4000-4ARUZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4000-4ARUZ-RL is usually 5 days.

3.What payment methods are accepted for ADA4000-4ARUZ-RL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4000-4ARUZ-RL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADA4000-4ARUZ-RL?

ADA4000-4ARUZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADA4000-4ARUZ-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 ADA4000-4ARUZ-RL?

For technical support, including ADA4000-4ARUZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4000-4ARUZ-RL requirements.

6.How does Aetrix verify that ADA4000-4ARUZ-RL is sourced from the original manufacturer or authorized distributors?

All ADA4000-4ARUZ-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 ADA4000-4ARUZ-RL meets industry standards.

7.What is the process for return or replacement of ADA4000-4ARUZ-RL?

All ADA4000-4ARUZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with ADA4000-4ARUZ-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 ADA4000-4ARUZ-RL part is unused and in its original packaging.

Return procedure for ADA4000-4ARUZ-RL:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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