My Inquiry
My Account
Analog Devices Inc. ADA4805-1ARJZ-R7
- Part No.:
- ADA4805-1ARJZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
ADA4805-1ARJZ-R7.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:19,572
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADA4805-1ARJZ-R7 from Analog Devices is a single-channel, rail-to-rail output voltage feedback amplifier optimized for low-power, high-resolution data acquisition systems. It delivers 105 MHz −3 dB bandwidth (G = +1, 5 V supply), 160 V/µs slew rate, and ultralow 500 µA quiescent current per amplifier - enabling precision ADC driving in battery-powered instrumentation and portable point-of-sale terminals.
For engineers reviewing the ADA4805-1ARJZ-R7 datasheet, ADA4805-1ARJZ-R7 pinout, ADA4805-1ARJZ-R7 application, or ADA4805-1ARJZ-R7 equivalent, key selection criteria include its dynamic power scaling via active-low shutdown (3 µs turn-on), 0.2 µV/°C offset drift (typ), and validated performance with SAR ADCs such as AD7980 and AD7984.
Technical Context
The ADA4805-1ARJZ-R7 employs Analog Devices' proprietary XFCB process to simultaneously achieve low voltage noise (5.9 nV/√Hz at 100 kHz) and low current noise (0.6 pA/√Hz), supporting high-fidelity signal conditioning in wide-bandwidth, low-supply applications. Its input common-mode range extends from −0.1 V to +4 V on a 5 V single supply, and it features fully differential input stage operation with 50 MΩ common-mode input resistance.
Dynamic power scaling is implemented through a dedicated active-low SHUTDOWN pin, reducing quiescent current to 2.9 µA while maintaining fast 3 µs turn-on time - enabling precise timing control between ADC sampling intervals. The amplifier remains stable driving capacitive loads up to 15 pF and supports rail-to-rail output swing (0.02 V to 4.98 V on 5 V supply).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 105 MHz at G = +1, 5 V supply - enables accurate amplification of fast transient signals in high-speed data converters. |
| Slew Rate | 160 V/µs - ensures faithful reproduction of large-signal steps without distortion in ADC driver applications. |
| Quiescent Current | 500 µA per amplifier - allows continuous operation in micropower systems like portable RFID readers and handheld meters. |
| Input Offset Drift | 0.2 µV/°C (typ) - guarantees stable DC accuracy over industrial temperature range (−40°C to +125°C). |
| Shutdown Current | 2.9 µA - reduces system standby power by >99% while preserving fast reactivation for duty-cycled architectures. |
| Input Voltage Noise | 5.9 nV/√Hz at 100 kHz - minimizes added noise when buffering low-level sensor or reference signals. |
| Output Swing | Rail-to-rail: 0.02 V to 4.98 V (RL = 2 kΩ, 5 V supply) - maximizes dynamic range into ADC inputs referenced to midsupply. |
Pinout & Package
The ADA4805-1ARJZ-R7 is packaged in a 6-lead SOT-23 (RJZ) with exposed pad for thermal enhancement. Pin assignments are standardized across SOT-23 and SC70 variants per Analog Devices' pinout documentation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Amplifier output node - drives ADC input or reference buffer load with rail-to-rail capability and 15 pF capacitive load tolerance. |
| 2 | −VS | Negative supply terminal - accepts ground (single supply) or negative rail (dual supply); supports operation down to −1.5 V. |
| 3 | +IN | Noninverting input - high-impedance (50 MΩ) node with −0.1 V to +4 V common-mode range on 5 V supply. |
| 4 | −IN | Inverting input - used for feedback configuration; matched to +IN for precision closed-loop gain control. |
| 5 | SHUTDOWN | Active-low enable control - pulls quiescent current to 2.9 µA when logic low (<1.5 V); 3 µs turn-on ensures minimal latency in sample-and-hold timing. |
| 6 | +VS | Positive supply terminal - operates from 2.7 V to 10 V total supply range, including ±1.5 V to ±5 V dual supplies. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Power Scaling | SHUTDOWN pin reduces supply current to 2.9 µA with 3 µs wake-up - enables energy-efficient burst-mode operation synchronized to ADC sampling clocks. |
| XFCB Process Technology | Simultaneous 5.9 nV/√Hz voltage noise and 0.6 pA/√Hz current noise - preserves SNR in high-gain, wideband sensor interfaces and reference buffers. |
| Rail-to-Rail Output | Swings within 20 mV of rails (0.02 V to 4.98 V on 5 V) - maximizes usable ADC input range and improves effective resolution. |
| Wide Supply Range | Operates from 2.7 V single supply to ±5 V dual supply - simplifies integration across portable, industrial, and mixed-signal platforms. |
| Industrial Temperature Rating | Specified from −40°C to +125°C - ensures parametric stability in automotive front-end modules and harsh-environment instrumentation. |
Applications
| High-Resolution SAR ADC Driver | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Driving the AD7980 16-bit, 1 MSPS SAR ADC in portable data loggers with 5 V single supply. IC Role / Device Role / Timing Role: Precision unity-gain buffer with <35 ns settling to 0.1%, minimizing aperture uncertainty during conversion. Use Value: Enables full 16-bit ENOB by suppressing THD (−102 dBc HD2/HD3 at 100 kHz) and maintaining 91 dB SNR in system-level testing. |
Use Scenario: Signal conditioning front-end in handheld multimeters with 24-hour battery life requirement. IC Role / Device Role / Timing Role: Low-noise, low-drift amplifier for transducer output scaling prior to digitization. Use Value: 500 µA quiescent current and 0.2 µV/°C drift preserve measurement accuracy across ambient temperature swings without recalibration. |
| Micropower Active Filter | Portable Point-of-Sale Terminal |
Use Scenario: 2nd-order anti-aliasing filter in ultra-low-power environmental sensor nodes powered by coin-cell batteries. IC Role / Device Role / Timing Role: Dual-function integrator/amplifier with programmable cutoff frequency and rail-to-rail I/O. Use Value: 105 MHz bandwidth supports filter tuning up to 100 kHz while consuming only 500 µA - extending battery life beyond 3 years. |
Use Scenario: Barcode scanner analog front-end requiring fast pulse response and ESD robustness in retail environments. IC Role / Device Role / Timing Role: High-speed photodiode preamplifier with shutdown-controlled duty cycling between scan events. Use Value: 3 µs turn-on time synchronizes amplifier activation precisely with laser trigger pulses, eliminating startup delay artifacts. |
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 |
|---|---|---|---|
| ADA4891-1ARJZ-R7 | Higher quiescent current (1.2 mA), wider bandwidth (225 MHz), no shutdown pin. | Better suited for continuous high-speed signal chains where power budget allows; lacks dynamic power scaling. | Select when maximum bandwidth and drive strength outweigh micropower requirements. |
| OPA355IDBVR | Lower noise (4.5 nV/√Hz), higher supply current (8.5 mA), no shutdown, limited to 5.5 V max supply. | Optimized for precision audio and medical sensing; not rated for industrial temperature range. | Prefer for ultra-low-noise, non-temperature-critical applications with ample power headroom. |
Compared with ADA4891-1ARJZ-R7 and OPA355IDBVR, the ADA4805-1ARJZ-R7 uniquely balances sub-mA quiescent current, 105 MHz bandwidth, and integrated shutdown - making it the only option among the three qualified for battery-operated, thermally demanding, and duty-cycled ADC driver roles.
Availability
ADA4805-1ARJZ-R7 is available at Aetrix Electronics and suitable for high-resolution SAR ADC drivers, battery-powered instrumentation, and portable point-of-sale terminals requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for ADA4805-1ARJZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide.
The ADA4805 family was engineered specifically for low-power, high-speed signal conditioning in precision data acquisition - targeting applications where bandwidth, noise, drift, and quiescent current must be simultaneously optimized.
FAQ
What is the operating supply voltage range for the ADA4805-1ARJZ-R7?
The ADA4805-1ARJZ-R7 operates from a total supply voltage of 2.7 V to 10 V, supporting single supplies (e.g., +3 V or +5 V with ground) and dual supplies (±1.5 V to ±5 V). This flexibility allows direct integration into both portable and industrial systems without level-shifting circuitry. All key specifications - including 105 MHz bandwidth and 500 µA quiescent current - are guaranteed across this full range.
Does the ADA4805-1ARJZ-R7 support rail-to-rail input operation?
No, the ADA4805-1ARJZ-R7 features rail-to-rail *output* but not rail-to-rail input. Its input common-mode voltage range is −0.1 V to +4 V on a 5 V single supply, and −5.1 V to +4 V on ±5 V supplies. This design prioritizes low input bias current (470 nA typ) and low noise over full input swing - making it ideal for buffered configurations where input is referenced within these limits.
How does the shutdown function work on the ADA4805-1ARJZ-R7?
The ADA4805-1ARJZ-R7 includes an active-low SHUTDOWN pin (Pin 5). When pulled below 1.5 V (typically to ground), quiescent current drops to 2.9 µA, and the output enters high-impedance state. Turn-on occurs within 3 µs after the pin rises above 1.9 V - enabling precise synchronization with ADC sampling clocks. This feature is validated across −40°C to +125°C and is integral to its dynamic power scaling architecture.
Can the ADA4805-1ARJZ-R7 drive ADC inputs directly without external components?
Yes - the ADA4805-1ARJZ-R7 is explicitly characterized and recommended for direct connection to SAR ADCs such as the AD7980. Its 35 ns settling time to 0.1%, rail-to-rail output swing (0.02 V to 4.98 V on 5 V), and low distortion (−102 dBc HD2 at 100 kHz) eliminate need for external RC filters or gain-setting resistors in unity-gain buffer configurations, as confirmed in Figure 1 of the official datasheet.
What package type is used for the ADA4805-1ARJZ-R7?
The ADA4805-1ARJZ-R7 uses a 6-lead SOT-23 package (RJZ suffix), with pinout identical to the SC70 variant. It features an exposed pad for enhanced thermal dissipation (θJA = 209.1°C/W on JEDEC 4-layer board), and is rated for operation from −40°C to +125°C. This compact footprint supports high-density PCB layouts in space-constrained portable electronics.
ADA4805-1ARJZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- 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:
- 9 µV
- Current - Supply:
- 500µA
- Current - Output / Channel:
- 73 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
ADA4805-1ARJZ-R7 FAQ
1.How can I place an order for ADA4805-1ARJZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4805-1ARJZ-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 ADA4805-1ARJZ-R7 reliable?
The price and inventory of ADA4805-1ARJZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4805-1ARJZ-R7 is usually 5 days.
3.What payment methods are accepted for ADA4805-1ARJZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4805-1ARJZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4805-1ARJZ-R7?
ADA4805-1ARJZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4805-1ARJZ-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 ADA4805-1ARJZ-R7?
For technical support, including ADA4805-1ARJZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4805-1ARJZ-R7 requirements.
6.How does Aetrix verify that ADA4805-1ARJZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADA4805-1ARJZ-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 ADA4805-1ARJZ-R7 meets industry standards.
7.What is the process for return or replacement of ADA4805-1ARJZ-R7?
All ADA4805-1ARJZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4805-1ARJZ-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 ADA4805-1ARJZ-R7 part is unused and in its original packaging.
Return procedure for ADA4805-1ARJZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADA4805-1ARJZ-R7 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…
