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Analog Devices Inc. ADA4806-1ARJZ-R2
- Part No.:
- ADA4806-1ARJZ-R2
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-8
- Datasheet:
-
ADA4806-1ARJZ-R2.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:276
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Product details
Overview
ADA4806-1ARJZ-R2 from Analog Devices is a single, rail-to-rail output, voltage-feedback operational amplifier with three dynamic power modes (full power, sleep, shutdown), 105 MHz −3 dB bandwidth at 5 V supply, 160 V/µs slew rate, and 125 µV max input offset voltage. It serves as a precision, low-power ADC driver in battery-operated data acquisition systems.
For engineers reviewing the ADA4806-1ARJZ-R2 datasheet, ADA4806-1ARJZ-R2 pinout, ADA4806-1ARJZ-R2 application, or ADA4806-1ARJZ-R2 equivalent, key selection criteria include multimode quiescent current scaling (500 µA / 74 µA / 2.9 µA), fast turn-on times (1.5 µs from shutdown), rail-to-rail output swing, and guaranteed 0.2 µV/°C offset drift over −40°C to +125°C.
Technical Context
The ADA4806-1ARJZ-R2 implements a voltage-feedback architecture optimized for high-speed, low-noise signal conditioning with dc precision. Its dual control pins-SLEEP and SHUTDOWN-enable discrete transitions between full-power (105 MHz BW), low-power sleep (74 µA, 0.45 µs wake-up), and ultra-low-power shutdown (2.9 µA, 1.5 µs wake-up) states without compromising settling time or distortion performance.
It supports single-supply (2.7–10 V) and split-supply operation, delivers rail-to-rail output swing into 2 kΩ loads, and maintains stable performance across supply voltages (±5 V, 5 V, 3 V) and temperatures (−40°C to +125°C), with CMRR >103 dB and PSRR >100 dB across all configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 105 MHz at 5 V supply, G = +1 - enables high-fidelity signal amplification up to ~100 MHz for SAR ADC sampling. |
| Slew Rate | 160 V/µs at 5 V supply - supports fast transient response for 2 V step signals with ≤35 ns 0.1% settling. |
| Input Offset Voltage | 125 µV maximum - ensures <1 LSB error when driving 16-bit ADCs with 2.5 V reference. |
| Offset Drift | 0.2 µV/°C typical, 1.5 µV/°C max - guarantees stable dc accuracy over industrial temperature range. |
| Quiescent Current | 500 µA (full), 74 µA (sleep), 2.9 µA (shutdown) - enables dynamic power scaling synchronized to ADC sampling rate. |
| Noise Density | 5.9 nV/√Hz at 100 kHz - minimizes contribution to system noise floor in precision analog front ends. |
| Supply Range | 2.7 V to 10 V - compatible with Li-ion, 3.3 V, and ±5 V systems without level-shifting. |
Pinout & Package
ADA4806-1ARJZ-R2 is housed in an 8-lead SOT-23 package (JEDEC MO-178AA), with exposed pad for thermal enhancement and rated for −40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Amplifier output | Rail-to-rail output capable of sourcing/sinking ±58 mA linearly; drives ADC inputs directly. |
| NC (Pin 2) | No connection | Internally unconnected; must remain floating per datasheet - no routing or grounding allowed. |
| −VS (Pin 3) | Negative supply | Accepts −1 V to −5 V in split-supply mode or ground in single-supply; defines lower rail for common-mode range. |
| +IN (Pin 4) | Noninverting input | High-impedance (50 MΩ common-mode, 260 kΩ differential) node for reference buffering or sensor signal routing. |
| −IN (Pin 5) | Inverting input | Used for feedback network connection; supports unity-gain stable configuration with 0 Ω RF. |
| SLEEP (Pin 6) | Low-power mode control | Logic-low (<1.5 V @ 5 V supply) activates 74 µA sleep mode; wake-up time 0.45 µs enables ~2 MSPS dynamic scaling. |
| SHUTDOWN (Pin 7) | Power-down control | Logic-low (<1.5 V @ 5 V supply) reduces current to 2.9 µA; 1.5 µs turn-on allows rapid reactivation between conversions. |
| +VS (Pin 8) | Positive supply | Accepts 2.7–10 V; supplies both core amplifier and internal bias circuitry; PSRR >100 dB suppresses supply noise. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic power scaling | Three discrete operating modes allow real-time current adjustment (500 µA → 74 µA → 2.9 µA) synchronized to ADC sample timing. |
| Rail-to-rail output | Swings within 20 mV of rails into 2 kΩ load - maximizes dynamic range for 16-bit+ ADCs with 2.5 V or 5 V references. |
| Fast wake-up capability | 1.5 µs from shutdown and 0.45 µs from sleep ensure minimal dead time during burst-mode acquisition. |
| Low 1/f noise corner | 8 Hz 1/f corner frequency combined with 5.9 nV/√Hz broadband noise enables precision dc-coupled measurements. |
| Industrial temperature rating | Specified from −40°C to +125°C with guaranteed offset drift (0.2 µV/°C typ) - suitable for automotive and industrial environments. |
Applications
| Portable Data Acquisition | Precision ADC Driver |
|---|---|
Use Scenario: Battery-powered handheld multimeters and portable oscilloscopes requiring multi-channel, low-power analog front ends. IC Role / Device Role / Timing Role: Signal conditioning amplifier placed directly before SAR ADC input, providing gain, buffering, and drive strength. Use Value: 500 µA quiescent current and 105 MHz bandwidth enable high-resolution sampling without excessive thermal load or battery drain. | Use Scenario: Driving AD7980/AD7982 16–18-bit SAR ADCs in medical instrumentation and test equipment. IC Role / Device Role / Timing Role: Precision buffer and driver with rail-to-rail output swing matched to ADC reference voltage. Use Value: 125 µV max offset and 0.2 µV/°C drift ensure <±0.5 LSB error over temperature, preserving ADC ENOB. |
| Voltage Reference Buffer | Active RFID Reader Front End |
Use Scenario: Stabilizing low-noise voltage references (e.g., ADR45xx) for precision DACs and sensor excitation circuits. IC Role / Device Role / Timing Role: Unity-gain buffer isolating reference from load variations while maintaining dc accuracy. Use Value: 50 MΩ input resistance and 125 µV offset minimize reference loading error and long-term drift. | Use Scenario: Amplifying weak tag return signals in UHF RFID readers operating from coin-cell batteries. IC Role / Device Role / Timing Role: Low-noise, fast-settling gain stage in receiver chain prior to envelope detection or demodulation. Use Value: 5.9 nV/√Hz noise and 35 ns 0.1% settling support reliable detection of sub-mV tag responses at 13.56 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4807-1ARJZ-R7 | Higher quiescent current (1.2 mA), no sleep/shutdown pins, 130 MHz bandwidth, lower noise (3.9 nV/√Hz). | Better for always-on, higher-speed systems where power gating is unnecessary. | Select when maximum speed/noise performance outweighs dynamic power control needs. |
| OPA320AIDBVR | Single-supply only (1.8–5.5 V), 20 MHz bandwidth, 0.15 µV/°C drift, no multimode control, 170 µA IQ. | Optimized for ultra-low-drift, low-voltage portable sensors-not suitable for high-speed ADC driving. | Select for sub-100 kHz precision sensing where bandwidth and multimode operation are secondary. |
Compared with ADA4807-1ARJZ-R7 and OPA320AIDBVR, the ADA4806-1ARJZ-R2 uniquely balances 105 MHz bandwidth, multimode power control, and 0.2 µV/°C drift - making it the only option among the three that supports dynamic power scaling for battery-constrained, high-resolution data converters.
Availability
ADA4806-1ARJZ-R2 is available at Aetrix Electronics and suitable for portable instrumentation, high-channel-density data acquisition, and precision ADC driver applications requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for ADA4806-1ARJZ-R2 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 ADA4806 family was designed specifically for low-power, high-resolution data conversion systems - enabling dynamic power scaling between ADC samples while preserving dc precision, speed, and noise performance.
FAQ
What are the valid logic thresholds for the SHUTDOWN and SLEEP pins of the ADA4806-1ARJZ-R2?
At 5 V supply, SHUTDOWN and SLEEP pins activate low-power modes when driven below 1.5 V and enable full operation when above 1.9 V. Thresholds scale with supply voltage and vary slightly with temperature (±0.2 V over −40°C to +125°C), as confirmed in Figure 42 of the datasheet. The ADA4806-1ARJZ-R2 interprets these voltages relative to ground, not supply rails.
Can the ADA4806-1ARJZ-R2 drive capacitive loads, and what is its maximum stable value?
Yes - the ADA4806-1ARJZ-R2 is specified to drive up to 15 pF capacitive load with ≤30% overshoot in unity-gain configuration (Figure 11). Driving larger capacitances (e.g., ADC input capacitance + PCB trace) requires external isolation resistor (typically 10–50 Ω) between amplifier output and load to maintain stability and preserve settling performance.
How does the ADA4806-1ARJZ-R2 achieve 0.2 µV/°C typical offset drift, and is this guaranteed?
The ADA4806-1ARJZ-R2 achieves 0.2 µV/°C typical offset drift through proprietary laser-trimmed input-stage matching and on-chip curvature compensation. While the 0.2 µV/°C value is typical (Figure 26), the datasheet guarantees ≤1.5 µV/°C maximum over −40°C to +125°C (4σ limit), validated across production lots - a key differentiator for precision dc-coupled systems.
Does the ADA4806-1ARJZ-R2 require external compensation components for unity-gain stability?
No - the ADA4806-1ARJZ-R2 is internally compensated and unity-gain stable without external components. It achieves this using a tailored dominant-pole architecture that maintains phase margin >60° across supply voltages (3 V to ±5 V) and temperatures (−40°C to +125°C), as verified in small-signal frequency response plots (Figures 5–7).
What is the minimum supply voltage required for rail-to-rail output operation in the ADA4806-1ARJZ-R2?
The ADA4806-1ARJZ-R2 supports rail-to-rail output swing down to 2.7 V total supply (e.g., +2.7 V / GND), delivering ≥0.02 V to 2.68 V output range into 2 kΩ (Table 4). Output swing degrades slightly below 2.7 V; operation below this voltage is outside specification and may compromise linearity or drive capability.
ADA4806-1ARJZ-R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 160V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 105 MHz
- Current - Input Bias:
- 470 nA
- Voltage - Input Offset:
- 13 µV
- Current - Supply:
- 500µA
- Current - Output / Channel:
- 73 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-8
ADA4806-1ARJZ-R2 FAQ
1.How can I place an order for ADA4806-1ARJZ-R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4806-1ARJZ-R2 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 ADA4806-1ARJZ-R2 reliable?
The price and inventory of ADA4806-1ARJZ-R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4806-1ARJZ-R2 is usually 5 days.
3.What payment methods are accepted for ADA4806-1ARJZ-R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4806-1ARJZ-R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4806-1ARJZ-R2?
ADA4806-1ARJZ-R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4806-1ARJZ-R2 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 ADA4806-1ARJZ-R2?
For technical support, including ADA4806-1ARJZ-R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4806-1ARJZ-R2 requirements.
6.How does Aetrix verify that ADA4806-1ARJZ-R2 is sourced from the original manufacturer or authorized distributors?
All ADA4806-1ARJZ-R2 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 ADA4806-1ARJZ-R2 meets industry standards.
7.What is the process for return or replacement of ADA4806-1ARJZ-R2?
All ADA4806-1ARJZ-R2 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4806-1ARJZ-R2, 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 ADA4806-1ARJZ-R2 part is unused and in its original packaging.
Return procedure for ADA4806-1ARJZ-R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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