My Inquiry
My Account
Analog Devices Inc. ADA4805-2ACPZ-R7
- Part No.:
- ADA4805-2ACPZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-VFDFN Exposed Pad, CSP
- Datasheet:
-
ADA4805-2ACPZ-R7.pdf
- Description:
- IC OPAMP VFB 2 CIRCUIT 10LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,094
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADA4805-2ACPZ-R7 from Analog Devices is a dual, rail-to-rail output, voltage-feedback operational 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, with shutdown reducing current to 2.9 µA. It serves as an ADC driver in battery-powered instrumentation and precision SAR converter interfaces.
For engineers reviewing the ADA4805-2ACPZ-R7 datasheet, ADA4805-2ACPZ-R7 pinout, ADA4805-2ACPZ-R7 application, or ADA4805-2ACPZ-R7 equivalent, key selection criteria include its dynamic power scaling capability, 0.2 µV/°C offset drift (typ), rail-to-rail output swing, and validated performance driving AD7980/AD7984 16–18-bit SAR ADCs under 3 V to ±5 V supplies.
Technical Context
The ADA4805-2ACPZ-R7 employs Analog Devices' proprietary XFCB process to achieve simultaneous low voltage noise (5.9 nV/√Hz at 100 kHz) and low current noise (0.6 pA/√Hz), enabling high-fidelity signal conditioning in micropower applications. Its fully differential input stage supports input common-mode range from −0.1 V to +4 V on 5 V single supply.
It integrates two independent amplifiers, each with active-low SHUTDOWN pins (Pin 5 and Pin 6 in MSOP), enabling dynamic power management between ADC sampling cycles. Turn-on time is 3 µs (max), ensuring fast reactivation without compromising settling accuracy (35 ns to 0.1%).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| −3 dB Bandwidth | 105 MHz at G = +1, 5 V supply - enables wideband signal conditioning for 1 MSPS+ SAR ADCs without gain-bandwidth trade-off. |
| Slew Rate | 160 V/µs - supports full-scale transient response for 2 V step inputs, critical for accurate ADC sampling fidelity. |
| Quiescent Current | 500 µA per amplifier - allows continuous operation in sub-1 mW signal chains for portable instrumentation. |
| Input Offset Drift | 0.2 µV/°C (typ) - ensures <1 µV total drift over −40°C to +85°C, preserving DC accuracy in uncalibrated systems. |
| Input Voltage Noise | 5.9 nV/√Hz at 100 kHz - minimizes added noise in high-gain, medium-bandwidth sensor front-ends. |
| Shutdown Current | 2.9 µA (max) - reduces idle power by >99% while retaining microsecond-level wake-up readiness. |
| Rail-to-Rail Output | Swings to within 20 mV of rails (RL = 2 kΩ) - maximizes dynamic range utilization for 16-bit+ ADC reference buffers. |
Pinout & Package
The ADA4805-2ACPZ-R7 is packaged in an 8-lead MSOP (Mini Small Outline Package) with exposed pad for thermal enhancement. Pin 1 is VOUT1; Pin 4 is −VS; Pin 5 is SHUTDOWN1; Pin 6 is SHUTDOWN2; Pin 7 is +IN2; Pin 8 is +VS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VOUT1) | Amplifier 1 output | Drives external load or ADC input; rail-to-rail swing supports full-scale analog input range. |
| 2 (−IN1) | Inverting input 1 | Accepts feedback network connection; high impedance (260 kΩ differential) minimizes loading error. |
| 3 (+IN1) | Noninverting input 1 | Receives signal source; common-mode range extends to −0.1 V on 5 V supply for ground-referenced sensors. |
| 4 (−VS) | Negative supply | Supports dual-supply operation down to ±1.5 V; also used as ground reference in single-supply configurations. |
| 5 (SHUTDOWN1) | Active-low enable 1 | Pull ≤0.7 V to disable Amp1; reduces quiescent current to 2.9 µA while maintaining fast 3 µs turn-on. |
| 6 (SHUTDOWN2) | Active-low enable 2 | Independent control for Amp2; enables selective power gating in multi-channel data acquisition systems. |
| 7 (+IN2) | Noninverting input 2 | Second channel input; identical specs to Channel 1 - supports dual-sensor or differential pair buffering. |
| 8 (+VS) | Positive supply | Accepts 2.7 V to 10 V single supply or +VS in dual-supply mode; PSRR >100 dB suppresses supply ripple. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Power Scaling | Independent SHUTDOWN pins per amplifier allow microsecond-level power gating between ADC conversions, cutting system idle power without sacrificing speed. |
| XFCB Process Technology | Enables concurrent 5.9 nV/√Hz voltage noise and 0.6 pA/√Hz current noise - critical for high-Z sensor interfaces and low-distortion ADC drivers. |
| Wide Supply Range | Operates from 2.7 V single supply to ±5 V dual supply - simplifies design across portable, industrial, and mixed-voltage systems. |
| Low Distortion Performance | −102 dBc HD2 / −126 dBc HD3 at 100 kHz (G = +1, 2 V p-p) - preserves SNR in 16-bit+ data converters without post-processing correction. |
| Industrial Temperature Range | Rated from −40°C to +125°C - ensures stable offset, gain, and bandwidth in harsh environments like motor control or field instrumentation. |
Applications
| High-Resolution SAR ADC Driver | Battery-Powered Instrumentation |
|---|---|
|
Use Scenario: Driving AD7980 16-bit, 1 MSPS SAR ADC in portable multimeter or handheld analyzer. IC Role / Device Role / Timing Role: Precision buffer and level shifter between sensor front-end and ADC input, providing fast settling (<35 ns) and rail-to-rail swing. Use Value: Enables full 91 dB SINAD at 1 MSPS while consuming only 1 mW total (2 × 500 µA), extending battery life beyond 100 hours. |
Use Scenario: Signal conditioning in portable gas detector with electrochemical sensor and low-power MCU. IC Role / Device Role / Timing Role: Low-noise, micropower amplifier for sensor transimpedance and reference buffer stages. Use Value: 5.9 nV/√Hz noise and 0.2 µV/°C drift maintain ppm-level measurement stability across temperature without calibration. |
| Micropower Active Filter | ADC Reference Buffer |
|
Use Scenario: 2nd-order Sallen-Key anti-aliasing filter preceding 18-bit AD7984 ADC in wireless sensor node. IC Role / Device Role / Timing Role: Dual-channel op-amp implementing filter transfer function with matched gain/phase response. Use Value: 105 MHz bandwidth ensures flat group delay up to 100 kHz; 500 µA/channel eliminates thermal drift in compact PCB layout. |
Use Scenario: Buffering ADR435 5 V precision reference for multiple SAR ADCs in medical ECG front-end. IC Role / Device Role / Timing Role: Low-output-impedance, low-drift voltage follower isolating reference from ADC switching currents. Use Value: 125 µV max offset and rail-to-rail output ensure reference stays within 0.0025% of nominal, preserving 16-bit LSB accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-power op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4807-2ARMZ | Higher quiescent current (1.2 mA vs. 0.5 mA), wider bandwidth (220 MHz), no shutdown pins. | Preferred where speed > power savings; unsuitable for dynamic power scaling architectures. | Select ADA4807-2ARMZ only when >200 MHz bandwidth is required and shutdown functionality is unnecessary. |
| OPA2333AIDR | Zero-drift architecture (0.02 µV/°C drift), lower bandwidth (350 kHz), higher supply current (17 µA). | Optimized for ultra-stable DC/low-frequency applications; cannot support >100 kHz signal paths. | Choose OPA2333AIDR for µV-level DC precision; avoid for ADC driver or wideband filtering roles requiring ADA4805-2ACPZ-R7's 105 MHz BW. |
Compared with ADA4807-2ARMZ and OPA2333AIDR, the ADA4805-2ACPZ-R7 uniquely balances 105 MHz bandwidth, 500 µA quiescent current, and dual independent shutdown-making it the only option among the three that supports both high-speed sampling and aggressive dynamic power management in portable data acquisition.
Availability
ADA4805-2ACPZ-R7 is available at Aetrix Electronics and suitable for high-resolution ADC drivers, battery-powered instrumentation, and micropower active filters requiring stable component supply and long-term industrial-grade availability.
Supply support for ADA4805-2ACPZ-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.
The ADA4805 family was designed specifically for low-power, high-speed data acquisition systems-targeting precision SAR ADC drivers, portable instrumentation, and energy-conscious signal chains where bandwidth, noise, and quiescent current must co-optimize.
FAQ
What is the maximum supply voltage for ADA4805-2ACPZ-R7?
The ADA4805-2ACPZ-R7 has an absolute maximum supply voltage rating of 11 V across +VS and −VS pins. For reliable operation, it is specified over a recommended supply range of 2.7 V to 10 V (single supply) or ±1.5 V to ±5 V (dual supply). Exceeding 11 V risks permanent damage per Absolute Maximum Ratings Table 5.
Does ADA4805-2ACPZ-R7 support rail-to-rail input?
No, ADA4805-2ACPZ-R7 does not support rail-to-rail input. Its input common-mode voltage range is −0.1 V to +4 V on a 5 V single supply (Table 3), and −5.1 V to +4 V on ±5 V supplies (Table 2). The input stage requires at least 1 V headroom from +VS and can extend 0.1 V below −VS - making it rail-to-rail output only.
What is the typical input offset voltage drift of ADA4805-2ACPZ-R7?
The typical input offset voltage drift of ADA4805-2ACPZ-R7 is 0.2 µV/°C, guaranteed over the full industrial temperature range (−40°C to +125°C) with 4σ statistical confidence (Tables 2–4, General Description). This low drift ensures minimal DC error accumulation in uncalibrated, wide-temperature applications.
Can ADA4805-2ACPZ-R7 drive capacitive loads?
Yes, ADA4805-2ACPZ-R7 is characterized to drive up to 15 pF capacitive loads with ≤30% overshoot (Tables 2–4). For larger loads, external isolation resistance (e.g., 226 Ω series resistor per Figure 14) is recommended to maintain stability and preserve small-signal bandwidth.
What package type is used for ADA4805-2ACPZ-R7?
ADA4805-2ACPZ-R7 uses the 8-lead MSOP (Mini Small Outline Package) with exposed pad (EPAD), as confirmed in the Ordering Guide and Pin Configurations section (Figure 7 and Table 8). The "ACPZ" suffix explicitly denotes this MSOP package variant per Analog Devices' part numbering convention.
ADA4805-2ACPZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- 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:
- 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:
- 10-LFCSP-WD (3x3)
ADA4805-2ACPZ-R7 FAQ
1.How can I place an order for ADA4805-2ACPZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4805-2ACPZ-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 ADA4805-2ACPZ-R7 reliable?
The price and inventory of ADA4805-2ACPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4805-2ACPZ-R7 is usually 5 days.
3.What payment methods are accepted for ADA4805-2ACPZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4805-2ACPZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4805-2ACPZ-R7?
ADA4805-2ACPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4805-2ACPZ-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 ADA4805-2ACPZ-R7?
For technical support, including ADA4805-2ACPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4805-2ACPZ-R7 requirements.
6.How does Aetrix verify that ADA4805-2ACPZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADA4805-2ACPZ-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 ADA4805-2ACPZ-R7 meets industry standards.
7.What is the process for return or replacement of ADA4805-2ACPZ-R7?
All ADA4805-2ACPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4805-2ACPZ-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 ADA4805-2ACPZ-R7 part is unused and in its original packaging.
Return procedure for ADA4805-2ACPZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADA4805-2ACPZ-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…
