Overview
The ADA4350ARUZ-R7, produced by Analog Devices Inc., is a multifunctional analog front end (AFE) designed for use with photodetectors or other sensors that produce a current proportional to the sensed parameter or voltage input. This integrated circuit combines a FET input amplifier, a switching network, and an ADC driver, all controllable via a serial peripheral interface (SPI) or parallel control logic. It is optimized for applications requiring precise gain levels to maximize dynamic range and operates over a temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Voltage Range | 3.3 | 12 | V | |
| Quiescent Current (Full System) | 8.5 | mA | ||
| Digital Supply Range | 3.3 | 5.5 | V | |
| Digital Quiescent Current (Enabled) | 50 | µA | ||
| Digital Quiescent Current (Disabled) | 0.6 | µA | ||
| Input Resistance (VIN1 and REF) | 200 | MΩ | ||
| Input Capacitance (VIN1 and REF) | 1.4 | pF | ||
| Output Voltage Swing (RL = no load, single-ended) | −4.8 | +4.83 | V | |
| Positive Power Supply Rejection Ratio | 90 | 109 | dB | |
| Negative Power Supply Rejection Ratio | 86 | 100 | dB |
Key Features
- FET input amplifier with very low voltage noise and current noise.
- Integrated switching network and ADC driver.
- Control via SPI or parallel control logic.
- Precise gain selection to maximize dynamic range.
- Operating temperature range of −40°C to +85°C.
- Low input bias current and high input impedance.
- High common-mode rejection ratio (CMRR) of up to 100 dB.
Applications
- Current to voltage (I to V) conversions.
- Photodiode preamplifiers.
- Chemical analyzers.
- Mass spectrometry.
- Molecular spectroscopy.
- Laser/LED receivers.
- Data acquisition systems).
Q & A
- What is the operating voltage range of the ADA4350ARUZ-R7?
The operating voltage range is from 3.3 V to 12 V).
- What is the typical quiescent current of the ADA4350ARUZ-R7?
The typical quiescent current is 8.5 mA for the full system).
- How is the ADA4350ARUZ-R7 controlled?
The ADA4350ARUZ-R7 can be controlled via a serial peripheral interface (SPI) or parallel control logic).
- What is the input resistance of the ADA4350ARUZ-R7?
The input resistance is 200 MΩ for VIN1 and REF).
- What are the typical applications of the ADA4350ARUZ-R7?
Typical applications include current to voltage conversions, photodiode preamplifiers, chemical analyzers, mass spectrometry, molecular spectroscopy, laser/LED receivers, and data acquisition systems).
- What is the temperature range of the ADA4350ARUZ-R7?
The operating temperature range is from −40°C to +85°C).
- What is the digital supply range for the ADA4350ARUZ-R7?
The digital supply range is from 3.3 V to 5.5 V).
- What is the output voltage swing of the ADA4350ARUZ-R7?
The output voltage swing is ±4.8 V to ±4.83 V for single-ended operation with no load).
- What are the power supply rejection ratios of the ADA4350ARUZ-R7?
The positive power supply rejection ratio is 90 dB to 109 dB, and the negative power supply rejection ratio is 86 dB to 100 dB).
- What package type is the ADA4350ARUZ-R7 available in?
The ADA4350ARUZ-R7 is available in a 28-Lead TSSOP package).
