Overview
The LTC6561IUF#PBF, produced by Analog Devices Inc., is a low-noise, four-channel transimpedance amplifier (TIA) designed for high-performance applications such as LIDAR receivers using Avalanche Photodiodes (APDs). This device is notable for its high transimpedance gain, low power dissipation, and wide bandwidth, making it ideal for industrial imaging and other demanding environments.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| BW –3dB Bandwidth | 200mVp-p, OUT and CIN,TOT = 2pF | - | 220 | - | MHz |
| Transimpedance Gain | IIN < 2µA p-p | 63 | 74 | 85 | kΩ |
| Input Impedance | f = 100kHz | - | 236 | - | Ω |
| Output Impedance | f = 100kHz | - | 3 | - | Ω |
| Input Current Noise Density | At 200MHz, CIN,TOT = 2pF | - | 4.5 | - | pA/√Hz |
| Supply Voltage | - | - | 5 | - | V |
| Power Dissipation | - | - | 200 | - | mW |
| Operating Temperature Range | - | -40 | - | 85 | °C |
| Package Type | - | - | - | - | 24-LEAD (4mm × 4mm) PLASTIC QFN |
Key Features
- Low Noise and High Transimpedance Gain: The LTC6561 offers a high transimpedance gain of up to 74kΩ and low input current noise density of 4.5pA/√Hz at 200MHz, making it suitable for sensitive applications.
- Wide Bandwidth: The device features a –3dB bandwidth of 220MHz, ensuring high-speed signal processing.
- Low Power Dissipation: With a power dissipation of only 200mW, it is energy-efficient and suitable for battery-powered devices.
- Single Supply Operation: The LTC6561 operates on a single 5V supply, simplifying the power supply design.
- Internal Multiplexing: The device includes an internal 4-to-1 multiplexer, allowing multiple channels to be multiplexed onto a single output.
- Automotive Grade Available: Versions of the LTC6561 are available with controlled manufacturing to support automotive applications, ensuring high reliability and quality.
Applications
- LIDAR Receivers: The LTC6561 is particularly suited for LIDAR systems using Avalanche Photodiodes (APDs) due to its low noise and high transimpedance gain.
- Industrial Imaging: Its high bandwidth and low noise make it ideal for various industrial imaging applications.
- Automotive Systems: The automotive-grade versions of the LTC6561 are designed to meet the stringent reliability and quality requirements of automotive applications.
Q & A
- What is the primary application of the LTC6561?
The primary application of the LTC6561 is in LIDAR receivers using Avalanche Photodiodes (APDs) and industrial imaging.
- What is the transimpedance gain of the LTC6561?
The transimpedance gain of the LTC6561 is up to 74kΩ.
- What is the bandwidth of the LTC6561?
The –3dB bandwidth of the LTC6561 is 220MHz.
- What is the input current noise density of the LTC6561 at 200MHz?
The input current noise density at 200MHz is 4.5pA/√Hz.
- What is the power dissipation of the LTC6561?
The power dissipation of the LTC6561 is 200mW.
- Does the LTC6561 require multiple supply voltages?
No, the LTC6561 operates on a single 5V supply.
- Is the LTC6561 available in an automotive grade?
Yes, versions of the LTC6561 are available with controlled manufacturing to support automotive applications.
- What type of package does the LTC6561 come in?
The LTC6561 comes in a 24-LEAD (4mm × 4mm) PLASTIC QFN package.
- What is the operating temperature range of the LTC6561?
The operating temperature range of the LTC6561 is –40°C to 85°C.
- Does the LTC6561 have internal multiplexing capabilities?
Yes, the LTC6561 includes an internal 4-to-1 multiplexer.
