ADA4530-1

RECOMMENDED FOR NEW DESIGNS

Femtoampere Input Bias Current Electrometer Amplifier

Data Sheet (Rev. C) Product Selection Table

Part Models: 3
1ku List Price: Starting From $13.42

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Part Details

Low input bias current
- ±20 fA maximum at T_A = 25°C (guaranteed at production test)
- ±20 fA maximum at −40°C < T_A < +85°C
- ±250 fA maximum at −40°C < T_A < +125°C (guaranteed at production test)
Low offset voltage: 50 μV maximum over specified CMRR range
Offset voltage drift: ±0.13 μV/°C typical, ±0.5 μV/°C maximum
Integrated guard buffer with 100 μV maximum offset
Low voltage noise density: 14 nV/√Hz at 10 kHz
Wide bandwidth: 2 MHz unity-gain crossover
Supply voltage: 4.5 V to 16 V (±2.25 V to ±8 V)
Operating temperature: −40°C to +125°C
Long-term offset voltage drift (10,000 hours): 0.5 μV typical
Temperature hysteresis: 1.5 μV typical

Part Models: 3
1ku List Price: Starting From $13.42

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADA4530-1ARZ	8-Lead SOIC	Material Declaration Reliablity Data	Ultra Librarian SamacSys
ADA4530-1ARZ-R7	8-Lead SOIC	Material Declaration Reliablity Data	Ultra Librarian SamacSys
ADA4530-1ARZ-RL	8-Lead SOIC	Material Declaration Reliablity Data	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Sensitive Photodiode Signal Chain

Modify Design LTspice Simulation
Photodiode Transimpedance Amplifier

Modify Design LTspice Simulation

Tools & Simulations

LTspice 1

ADA4530-1 - Operational Amplifiers (Op Amps)

Models for the following parts are available in LTspice:

ADA4530
ADA4530-1

Analog Photodiode Wizard

Use Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode. Select a photodiode from the library included in the tool, or enter custom photodiode specifications. Quickly observe tradeoffs between Bandwidth, Peaking (Q), and ENOB/SNR. Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain.

Open Tool

Analog Filter Wizard

Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior. Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current – to determine the best filter design for your requirements.

Open Tool

Signal Chain Designer - BETA

Signal Chain Designer is a web-based tool designed to create and simulate complex precision signal chains. See your circuit’s performance before you commit to your PCB: transfer function, noise, power consumption, input range, and DC error. Quickly experiment with different parts and architectures. Signal chains can be exported to LTspice for further analysis.

Open Tool

SPICE Model 1

ADA4530 SPICE Macro Model

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

ADA4530-1 Evaluation Board

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Features and Benefits

Footprint for ADA4530-1 8-lead SOIC package
Footprints for passive components
Available in buffer or transimpedance configuration
Easy modifications to other standard configurations
Guard ring to minimize leakage current
Assembled with metal shields
Enables quick prototyping
Easy connection to test equipment

Product Details

The ADA4530-1R-EBZ is an evaluation board for the ADA4530-1 offered in an 8-lead SOIC package. The ADA4530-1R-EBZ is a 4-layer printed circuit board (PCB) designed to minimize leakage currents with its guard ring features for femtoampere input bias current (I_B) measurement.

The ADA4530-1R-EBZ is available in two default configurations: buffer (ADA4530-1R-EBZ-BUF) and transimpedance (ADA4530-1R-EBZ-TIA). Both boards are populated with the necessary passive components, banana jacks/terminal blocks for supply voltages, BNC/terminal blocks for the output voltage, multiple test pins, and metal shields. All components are placed on the primary side with the exception of the triaxial (triax)/coaxial (coax) input connector (J1) and SHIELD3.

The ADA4530-1R-EBZ also has unpopulated resistor and capacitor pads that allows quick prototyping with different configurations, such as noninverting gain and inverting gain.

Specifications for the ADA4530-1 are provided in the ADA4530-1 data sheet available from Analog Devices, Inc. The ADA4530-1 data sheet and the AN-1373 Application Note should be consulted in conjunction with this user guide when using the evaluation board.

Figure 1 shows the top view of the evaluation board, and Figure 2 shows the bottom view. For more views of the evaluation board images, see the ADA4530-1R-EBZ Evaluation Board Photographs section.