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Analog Devices Inc. ADA4896-2ACPZ-R7
- Part No.:
- ADA4896-2ACPZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-WFDFN Exposed Pad, CSP
- Datasheet:
-
ADA4896-2ACPZ-R7.pdf
- Description:
- IC OPAMP VFB 2 CIRCUIT 8LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,620
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Product details
Overview
ADA4896-2ACPZ-R7 from Analog Devices is a dual, low-noise, rail-to-rail output voltage feedback amplifier optimized for high-speed, precision signal conditioning. It delivers 1 nV/√Hz input voltage noise at 100 kHz, 230 MHz −3 dB bandwidth (G = +1), 120 V/μs slew rate, and 45 ns settling to 0.1%, operating from ±5 V or single 3–10 V supplies. It serves as an ADC driver in ultrasound front-ends and PLL loop filters.
For engineers reviewing the ADA4896-2ACPZ-R7 datasheet, ADA4896-2ACPZ-R7 pinout, ADA4896-2ACPZ-R7 application, or ADA4896-2ACPZ-R7 equivalent, key selection criteria include wideband noise performance, rail-to-rail output swing under load, quiescent current per amplifier (3 mA), temperature stability across −40°C to +125°C, and compatibility with high-resolution data converters requiring low distortion and fast settling.
Technical Context
The ADA4896-2ACPZ-R7 uses Analog Devices' proprietary SiGe bipolar process to achieve simultaneous low 1/f noise (2.4 nV/√Hz at 10 Hz) and wideband noise (1 nV/√Hz at 100 kHz), enabling high dynamic range in sensor preamplifiers and medical imaging chains. Its unity-gain stable architecture supports gain configurations from −1 to +10 without external compensation.
It features fully differential input stage design with 10 MΩ common-mode input resistance and 11 pF differential input capacitance, supporting stable operation into capacitive loads up to 39 pF. The device maintains >97 dB open-loop gain and >−120 dB CMRR over frequency, ensuring accuracy in precision buffer and gain-stage applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Noise | 1 nV/√Hz at 100 kHz - enables high-SNR amplification of weak signals without degrading system noise floor. |
| −3 dB Bandwidth | 230 MHz at G = +1 - supports wideband signal acquisition up to ~100 MHz fundamental content. |
| Slew Rate | 120 V/μs - ensures faithful reproduction of fast transient signals with minimal distortion. |
| Settling Time to 0.1% | 45 ns at G = +2 - meets timing requirements for high-speed multiplexed ADC sampling. |
| Quiescent Current | 3 mA per amplifier - balances low power consumption with high-speed performance in portable or thermally constrained systems. |
| Rail-to-Rail Output Swing | ±4.96 V (RL = 1 kΩ, ±5 V supply) - maximizes dynamic range and simplifies level-shifting in single-supply designs. |
| Operating Temperature Range | −40°C to +125°C - qualified for industrial, automotive, and medical equipment environments. |
Pinout & Package
The ADA4896-2ACPZ-R7 is housed in an 8-lead LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad. This package provides low thermal resistance (θJA = 61°C/W) and compact footprint (2 mm × 2 mm × 0.55 mm), suitable for space-constrained PCB layouts requiring efficient heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT1) | Output 1 | Amplified output of Channel 1; rail-to-rail capable, drives 1 kΩ load to within 40 mV of rails. |
| 2 (−IN1) | Inverting Input 1 | Differential input node for Channel 1; 11 pF capacitance requires careful layout to avoid instability. |
| 3 (+IN1) | Noninverting Input 1 | Differential input node for Channel 1; 10 MΩ common-mode resistance supports high-impedance sensor interfaces. |
| 4 (−VS) | Negative Supply | Ground reference or negative rail; must be decoupled with 0.1 μF ceramic capacitor near pin. |
| 5 (+IN2) | Noninverting Input 2 | Input for Channel 2; electrically isolated from Channel 1 except via shared supply and substrate. |
| 6 (−IN2) | Inverting Input 2 | Input for Channel 2; matched to Channel 1 for dual-channel coherence in differential signaling. |
| 7 (OUT2) | Output 2 | Amplified output of Channel 2; exhibits <−60 dB crosstalk at 10 MHz for independent channel operation. |
| 8 (+VS) | Positive Supply | Primary power rail; supports 3–10 V operation; exposed pad (EPAD) must be connected to ground plane for thermal and noise performance. |
Key Features
| Feature | Design Value |
|---|---|
| Low 1/f noise | 2.4 nV/√Hz at 10 Hz - preserves signal integrity in DC-coupled, low-frequency applications like ECG front-ends. |
| High SFDR | −115 dBc at 100 kHz - minimizes harmonic contamination when driving 16-bit+ ADCs. |
| Capacitive load drive | Stable with 39 pF load - eliminates need for isolation resistors when interfacing to ADC input capacitance or long traces. |
| Wide supply range | 3 V to 10 V operation - supports both battery-powered instrumentation and industrial 5 V/±5 V systems. |
| Thermal robustness | Specified from −40°C to +125°C - ensures parametric consistency in harsh ambient conditions without derating. |
Applications
| Ultrasound Signal Chain | High-Resolution Data Acquisition |
|---|---|
Use Scenario: Amplifying weak echo signals from piezoelectric transducers before digitization in portable ultrasound systems. IC Role / Device Role / Timing Role: Low-noise preamplifier and anti-alias filter driver with 230 MHz bandwidth and 45 ns settling. Use Value: Preserves SNR by contributing only 1 nV/√Hz noise, enabling detection of sub-millivolt echoes without gain-induced distortion. | Use Scenario: Buffering and driving the analog inputs of 16–18-bit SAR ADCs in precision test equipment. IC Role / Device Role / Timing Role: High-speed, low-distortion ADC driver with rail-to-rail output swing and 0.1% settling in 45 ns. Use Value: Delivers full-scale resolution by maintaining −115 dBc SFDR at 100 kHz, minimizing code-dependent errors in high-accuracy measurements. |
| PLL Loop Filter | Low-Noise Sensor Interface |
Use Scenario: Implementing active loop filters in RF synthesizers where phase noise and settling speed impact spectral purity. IC Role / Device Role / Timing Role: Precision op-amp in third-order active filter topology, providing low drift and wide bandwidth for fast lock time. Use Value: Achieves <0.2 μV/°C offset drift and 2.4 nV/√Hz 1/f noise, reducing reference spurs and improving close-in phase noise. | Use Scenario: Conditioning outputs from MEMS accelerometers or strain gauges in structural health monitoring systems. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier front-end with 10 MΩ input resistance and rail-to-rail output. Use Value: Enables direct connection to high-impedance sensors while maintaining 99 nVp-p 0.1–10 Hz noise, critical for micro-g resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, high-speed amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADA4897-1ARJZ-R7 | Single-channel, 8-lead SOIC package; identical noise (1 nV/√Hz), bandwidth (230 MHz), and quiescent current (3 mA); lacks second amplifier. | Used where space or cost constraints favor single-channel solution; no dual-channel correlation or matching required. | Select when only one amplifier is needed and SOIC footprint is preferred over LFCSP. |
| ADA4898-2ARMZ | Lower noise (0.9 nV/√Hz), lower bandwidth (65 MHz), higher quiescent current (4.5 mA), MSOP-8 package; optimized for ultra-low-noise DC precision, not wideband. | Better for sub-10 MHz applications demanding lowest possible integrated noise; unsuitable for >100 MHz signal paths. | Choose for DC-coupled, low-frequency precision buffers where bandwidth is secondary to noise floor. |
Compared with ADA4897-1ARJZ-R7 and ADA4898-2ARMZ, the ADA4896-2ACPZ-R7 uniquely combines dual-channel integration, 230 MHz bandwidth, and 1 nV/√Hz noise in a thermally efficient LFCSP-making it optimal for space-constrained, wideband dual-signal-path systems like portable ultrasound or multi-channel data loggers.
Availability
ADA4896-2ACPZ-R7 is available at Aetrix Electronics and suitable for ultrasound imaging systems, high-speed data acquisition modules, and PLL-based RF synthesizers requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for ADA4896-2ACPZ-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, serving industrial, communications, automotive, and healthcare markets.
The ADA4896-2ACPZ-R7 belongs to Analog Devices' high-speed, low-noise amplifier product line, designed specifically for precision signal chain applications demanding wide bandwidth, ultra-low noise, and rail-to-rail output capability in compact packages.
FAQ
What is the maximum capacitive load the ADA4896-2ACPZ-R7 can drive stably?
The ADA4896-2ACPZ-R7 is characterized for stable operation with up to 39 pF capacitive load at G = +2, as confirmed in Table 3 of the Rev. B datasheet. Driving larger loads may require series output resistance or careful PCB layout to maintain phase margin and prevent peaking or oscillation. For loads exceeding 39 pF, refer to Figure 15 for small-signal response degradation trends.
Does the ADA4896-2ACPZ-R7 have a disable function?
No, the ADA4896-2ACPZ-R7 does not include a disable pin. That feature is exclusive to the ADA4897-1 and ADA4897-2 variants, as explicitly stated in the General Description and Pin Configurations sections of the datasheet. The ADA4896-2ACPZ-R7 operates continuously when powered within its specified supply range.
What is the typical input offset voltage drift of the ADA4896-2ACPZ-R7 over temperature?
The ADA4896-2ACPZ-R7 has a typical input offset voltage drift of 0.2 μV/°C, as specified in Table 3 (±5 V supply) and Table 4 (+5 V supply). This low drift ensures minimal baseline error shift across the full −40°C to +125°C operating range, critical for precision DC-coupled applications.
Can the ADA4896-2ACPZ-R7 operate from a single 3.3 V supply?
Yes, the ADA4896-2ACPZ-R7 supports single-supply operation from 3 V to 10 V, including 3.3 V. At +3.3 V, it delivers rail-to-rail output swing (e.g., 0.15 V to 3.15 V into 1 kΩ), 45 ns settling, and maintains 1 nV/√Hz noise-verified in Table 5 (+3 V supply section) of the datasheet.
How does the ADA4896-2ACPZ-R7 compare to the AD8065 in terms of noise and bandwidth?
The ADA4896-2ACPZ-R7 offers significantly lower wideband noise (1 nV/√Hz vs. AD8065's 4.8 nV/√Hz) and higher −3 dB bandwidth (230 MHz vs. AD8065's 145 MHz), while consuming comparable quiescent current (~3 mA vs. ~3.4 mA). Its 2.4 nV/√Hz 1/f noise also outperforms AD8065's 8 nV/√Hz at 10 Hz, making ADA4896-2ACPZ-R7 superior for wideband, low-noise applications.
ADA4896-2ACPZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-WFDFN 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:
- 120V/µs
- Gain Bandwidth Product:
- 90 MHz
- -3db Bandwidth:
- 230 MHz
- Current - Input Bias:
- 4 µA
- Voltage - Input Offset:
- 28 µV
- Current - Supply:
- 3mA (x2 Channels)
- Current - Output / Channel:
- 80 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:
- 8-LFCSP-WD (3x3)
ADA4896-2ACPZ-R7 FAQ
1.How can I place an order for ADA4896-2ACPZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADA4896-2ACPZ-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 ADA4896-2ACPZ-R7 reliable?
The price and inventory of ADA4896-2ACPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADA4896-2ACPZ-R7 is usually 5 days.
3.What payment methods are accepted for ADA4896-2ACPZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADA4896-2ACPZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADA4896-2ACPZ-R7?
ADA4896-2ACPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADA4896-2ACPZ-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 ADA4896-2ACPZ-R7?
For technical support, including ADA4896-2ACPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADA4896-2ACPZ-R7 requirements.
6.How does Aetrix verify that ADA4896-2ACPZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADA4896-2ACPZ-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 ADA4896-2ACPZ-R7 meets industry standards.
7.What is the process for return or replacement of ADA4896-2ACPZ-R7?
All ADA4896-2ACPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADA4896-2ACPZ-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 ADA4896-2ACPZ-R7 part is unused and in its original packaging.
Return procedure for ADA4896-2ACPZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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