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Analog Devices Inc. ADA4805-2TRMZ-EP
- Part No.:
- ADA4805-2TRMZ-EP
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ADA4805-2TRMZ-EP.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:321
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Product details
Overview
ADA4805-2TRMZ-EP from Analog Devices is a dual, rail-to-rail output, voltage-feedback operational amplifier optimized for high-resolution ADC driving in low-power, extended-temperature systems. It delivers 105 MHz −3 dB bandwidth (G = +1, 5 V supply), 160 V/µs slew rate, 125 µV max input offset voltage, 0.4 µV/°C typical offset drift, and 500 µA per amplifier quiescent current - enabling precision signal conditioning in battery-powered instrumentation and defense-grade data acquisition.
For engineers reviewing the ADA4805-2TRMZ-EP datasheet, ADA4805-2TRMZ-EP pinout, ADA4805-2TRMZ-EP application, or ADA4805-2TRMZ-EP equivalent, key selection criteria include its extended −55°C to +125°C operating range, MSOP-8 package compatibility with space-constrained layouts, ultralow noise (5.9 nV/√Hz at 100 kHz), and proven performance driving AD7980/AD7984 16–18-bit SAR ADCs.
Technical Context
The ADA4805-2TRMZ-EP employs Analog Devices' proprietary XFCB process to simultaneously achieve low voltage noise (5.9 nV/√Hz) and low current noise (0.6 pA/√Hz), supporting high-fidelity signal integrity in wideband, low-distortion applications. Its voltage-feedback architecture enables stable unity-gain operation with 105 MHz bandwidth and 35 ns settling to 0.1%.
It supports single-supply (3 V, 5 V) and split-supply (±1.5 V to ±5 V) operation, with input common-mode range extending from −0.1 V to +VS − 1 V (5 V supply) and rail-to-rail output swing delivering >99% of supply rails into 2 kΩ loads. The amplifier maintains DC precision across temperature via guaranteed 0.4 µV/°C offset drift and 125 µV max offset voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 105 MHz at G = +1, 5 V supply - enables accurate amplification of fast transients in 1 MSPS+ SAR ADC front-ends. |
| Slew Rate | 160 V/µs - ensures faithful reproduction of high-slew input steps without distortion in active filter or driver stages. |
| Input Offset Voltage | 125 µV maximum - minimizes DC error contribution in precision reference buffers and sensor signal chains. |
| Quiescent Current | 500 µA per amplifier - allows dual-channel amplification in micropower systems with <1 mW total supply consumption. |
| Input Voltage Noise | 5.9 nV/√Hz at 100 kHz - preserves SNR in high-resolution ADC drivers where noise floor directly limits effective resolution. |
| Operating Temperature | −55°C to +125°C - qualified for aerospace, downhole, and military embedded systems requiring AQEC-compliant reliability. |
| Rail-to-Rail Output | Swings within 20 mV of rails (5 V supply, RL = 2 kΩ) - maximizes dynamic range utilization in single-supply data converters. |
Pinout & Package
ADA4805-2TRMZ-EP is housed in an 8-lead Mini Small Outline Package (MSOP, RM-8), JEDEC MO-187-AA compliant, with exposed pad not electrically connected. Package dimensions: 3.00 mm × 3.00 mm × 1.10 mm height, 0.65 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VOUT1 | Amplifier 1 output | Delivers rail-to-rail buffered signal; drives ADC input or active filter stage with minimal headroom loss. |
| 2 - −IN1 | Inverting input 1 | Accepts feedback network connection; defines closed-loop gain and stability in inverting configurations. |
| 3 - +IN1 | Noninverting input 1 | Receives high-impedance sensor or reference signal; common-mode range extends to −0.1 V on 5 V supply. |
| 4 - −VS | Negative supply rail | Supports split-supply operation down to −5 V; required even in single-supply mode when referenced to ground. |
| 5 - +IN2 | Noninverting input 2 | Independent second channel input; enables dual-path signal conditioning without cross-talk in compact layouts. |
| 6 - −IN2 | Inverting input 2 | Second channel feedback node; permits independent gain setting for differential or parallel ADC channel interfaces. |
| 7 - VOUT2 | Amplifier 2 output | Provides matched performance to VOUT1; suitable for simultaneous dual ADC channel driving or I/Q path buffering. |
| 8 - +VS | Positive supply rail | Accepts 2.7 V to 10 V single or split supplies; quiescent current remains stable across full voltage range. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow power consumption | 500 µA per amplifier enables dual-channel operation under 1 mW - critical for portable RFID readers and handheld test equipment. |
| Extended temperature qualification | −55°C to +125°C operation with controlled manufacturing baseline satisfies MIL-PRF-38535 Class K and AQEC requirements for defense platforms. |
| Low 1/f noise corner | 8 Hz corner frequency ensures minimal low-frequency drift in photomultiplier and precision sensor amplifiers over long integration periods. |
| High open-loop gain | 109 dB (5 V supply) maintains accuracy in high-gain active filters and reference buffers where loop gain directly impacts linearity. |
| Capacitive load drive | Stable with up to 15 pF load - accommodates PCB trace capacitance and ADC input capacitance without external isolation resistors. |
Applications
| ADC Driver for High-Resolution SAR Converters | Battery-Powered Precision Instrumentation |
|---|---|
Use Scenario: Driving AD7980/AD7984 16–18-bit SAR ADCs in portable data loggers and field-deployable sensors. IC Role / Device Role / Timing Role: Low-noise, fast-settling buffer between signal source and ADC input, preserving SNR and minimizing code transition errors. Use Value: 105 MHz bandwidth and 35 ns 0.1% settling ensure full-scale step fidelity at 1 MSPS sampling rates; 5.9 nV/√Hz noise contributes <0.5 LSB error in 18-bit systems. |
Use Scenario: Signal conditioning in handheld multimeters, portable oscilloscopes, and battery-operated calibration standards. IC Role / Device Role / Timing Role: Dual-channel amplifier for simultaneous voltage/current measurement paths with rail-to-rail output swing maximizing ADC utilization. Use Value: 500 µA per amplifier enables >100-hour battery life in 3 V coin-cell designs; −55°C to +125°C rating supports outdoor industrial use. |
| Micropower Active Filters | Photomultiplier Tube (PMT) Signal Amplification |
Use Scenario: 2nd-order Sallen-Key and MFB filters in portable spectrum analyzers and ECG front-ends. IC Role / Device Role / Timing Role: Unity-gain stable, low-distortion op-amp implementing precise cutoff frequencies with minimal phase shift. Use Value: 105 MHz GBW supports filter Q > 10 without peaking; −102 dBc HD3 at 100 kHz prevents harmonic aliasing in band-limited measurements. |
Use Scenario: Low-noise preamplification of weak anode currents from PMTs in radiation detection and medical imaging. IC Role / Device Role / Timing Role: Transimpedance amplifier with low input bias current (470 nA typ) and ultralow voltage noise for high-gain current-to-voltage conversion. Use Value: 0.6 pA/√Hz current noise minimizes shot-noise degradation; 0.4 µV/°C offset drift prevents thermal drift-induced baseline wander in long acquisitions. |
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 |
|---|---|---|---|
| ADA4807-2ARMZ | Higher quiescent current (1.2 mA per amp), wider bandwidth (225 MHz), same MSOP-8 package and −55°C to +125°C rating. | Better suited for higher-speed ADC drivers (e.g., AD92xx series) where power budget allows >2× current draw. | Select ADA4807-2ARMZ only when bandwidth >150 MHz is required and system power margin exceeds 700 µA per channel. |
| LMH6629MA/NOPB | Higher supply current (4.3 mA), lower offset drift (0.2 µV/°C), SOIC-8 package, commercial −40°C to +125°C rating. | Offers superior DC stability but lacks AQEC qualification and consumes >8× more power than ADA4805-2TRMZ-EP. | Choose LMH6629MA/NOPB for cost-sensitive commercial instrumentation where extended temperature and ultra-low power are not mandatory. |
Compared with ADA4805-2TRMZ-EP, ADA4807-2ARMZ trades 2.4× higher power for 2.1× bandwidth and identical ruggedization, while LMH6629MA/NOPB sacrifices military-grade reliability and micropower operation for tighter DC specs in non-aerospace environments.
Availability
ADA4805-2TRMZ-EP is available at Aetrix Electronics and suitable for defense electronics, downhole oilfield sensors, and high-reliability industrial data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ADA4805-2TRMZ-EP 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, with design and manufacturing facilities worldwide.
The ADA4805-2TRMZ-EP belongs to Analog Devices' Enhanced Product (EP) op-amp family, engineered specifically for mission-critical applications demanding extended temperature operation, AQEC compliance, and controlled manufacturing baselines.
FAQ
What is the maximum operating temperature range for the ADA4805-2TRMZ-EP?
The ADA4805-2TRMZ-EP is rated for continuous operation from −55°C to +125°C, fully qualified per AQEC standards for defense and aerospace applications. This extended range is achieved through controlled fabrication and assembly processes, with thermal performance validated across the full span using JEDEC-standard test boards and verified in Figure 3 of the datasheet.
Does the ADA4805-2TRMZ-EP support single-supply operation?
Yes, the ADA4805-2TRMZ-EP operates from a single 3 V or 5 V supply, with input common-mode range extending from −0.1 V to +VS − 1 V and rail-to-rail output swing down to 20 mV from each rail. Its internal architecture eliminates need for level-shifting circuitry in single-supply ADC driver configurations such as those used with the AD7980.
What is the typical input voltage noise of the ADA4805-2TRMZ-EP at 100 kHz?
The ADA4805-2TRMZ-EP exhibits 5.9 nV/√Hz typical input voltage noise at 100 kHz under 5 V supply conditions, as specified in Table 3 of the datasheet. This value is measured with RL = 2 kΩ to midsupply and reflects the amplifier's XFCB process optimization for simultaneous low voltage and current noise performance.
Is the ADA4805-2TRMZ-EP pin-compatible with standard commercial-grade ADA4805-2 variants?
No - while the ADA4805-2TRMZ-EP shares identical pinout (MSOP-8, RM-8) and electrical functionality with commercial ADA4805-2 devices, it is not a drop-in replacement due to differences in screening, burn-in, and lot traceability required for EP qualification. System-level validation is required before substitution in AQEC-compliant designs.
What load capacitance can the ADA4805-2TRMZ-EP drive stably without external compensation?
The ADA4805-2TRMZ-EP is characterized to drive up to 15 pF capacitive load with ≤30% overshoot, as stated in the "Capacitive Load Drive" specification across all supply conditions. This capability eliminates need for series isolation resistors when interfacing directly to ADC inputs like those of the AD7980, which typically present 10–12 pF capacitance.
ADA4805-2TRMZ-EP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 250V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 120 MHz
- Current - Input Bias:
- 550 nA
- Voltage - Input Offset:
- 13 µV
- Current - Supply:
- 570µA (x2 Channels)
- Current - Output / Channel:
- 58 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 5 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
ADA4805-2TRMZ-EP FAQ
1.How can I place an order for ADA4805-2TRMZ-EP through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4805-2TRMZ-EP 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 ADA4805-2TRMZ-EP reliable?
The price and inventory of ADA4805-2TRMZ-EP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4805-2TRMZ-EP is usually 5 days.
3.What payment methods are accepted for ADA4805-2TRMZ-EP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4805-2TRMZ-EP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4805-2TRMZ-EP?
ADA4805-2TRMZ-EP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4805-2TRMZ-EP 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 ADA4805-2TRMZ-EP?
For technical support, including ADA4805-2TRMZ-EP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4805-2TRMZ-EP requirements.
6.How does Aetrix verify that ADA4805-2TRMZ-EP is sourced from the original manufacturer or authorized distributors?
All ADA4805-2TRMZ-EP 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 ADA4805-2TRMZ-EP meets industry standards.
7.What is the process for return or replacement of ADA4805-2TRMZ-EP?
All ADA4805-2TRMZ-EP units undergo pre-shipment inspection (PSI). If there is an issue with ADA4805-2TRMZ-EP, 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 ADA4805-2TRMZ-EP part is unused and in its original packaging.
Return procedure for ADA4805-2TRMZ-EP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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