Overview
The THS7001IPWP is a high-speed programmable-gain amplifier produced by Texas Instruments. This device is part of the THS7001 and THS7002 series, with the THS7001 being a single-channel version and the THS7002 being a dual-channel version. The THS7001 is designed for applications where load impedance can vary, making it ideal for use in various signal processing and amplification tasks.
Each channel of the THS7001 consists of a separate low-noise input preamplifier and a programmable gain amplifier (PGA). The preamplifier is a voltage-feedback amplifier with a low voltage noise of 1.7 nV/√Hz and a 100 MHz bandwidth (-3 dB). The PGA offers a digitally programmable gain range from -22 dB to 20 dB with a 6 dB step resolution and includes output clamp protection to prevent signal swing outside the common-mode input range of an analog-to-digital converter.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package | HTSSOP (PWP) | 20 pins |
| Operating Temperature Range | -40°C to 85°C | |
| Supply Voltage Range | ±4.5 V to ±16 V | |
| Preamplifier Voltage Noise | 1.7 nV/√Hz | |
| Preamplifier Bandwidth (-3 dB) | 100 MHz | |
| PGA Gain Range | -22 dB to 20 dB | |
| PGA Gain Step Resolution | 6 dB | |
| PGA Bandwidth (-3 dB) | 70 MHz | |
| Slew Rate | 175 V/µs | |
| Quiescent Supply Current (per channel) | VCC = ±5 V, TA = 25°C | 7 mA |
| Quiescent Supply Current (per channel) | VCC = ±15 V, TA = 25°C | 8 mA |
| Total Continuous Power Dissipation at TA = 25°C | 3.83 W |
Key Features
- Separate low-noise preamp and PGA stages
- Shutdown control for power conservation and multiplexing
- Low voltage noise: 1.7 nV/√Hz
- Accessible output pin for external filtering
- Voltage feedback, Gmin = -1, 2
- 100 MHz bandwidth (-3 dB) for the preamp and 70 MHz bandwidth (-3 dB) for the PGA
- Digitally programmable gain: -22 dB to 20 dB with 6 dB step resolution
- Output clamp protection
- 175 V/µs slew rate
- Wide supply range: ±4.5 V to ±16 V
- PowerPAD package for enhanced thermal performance
Applications
The THS7001 is suitable for various applications, particularly where variable load impedance is a concern. Some key application areas include:
- xDSL receiver front-ends
- Signal processing and amplification in telecommunications
- Medical equipment requiring high-speed and low-noise amplification
- Industrial control systems needing programmable gain amplifiers
- Aerospace and defense applications requiring high reliability and performance
Q & A
- What is the package type of the THS7001IPWP?
The THS7001IPWP is packaged in a 20-pin HTSSOP (PWP) package.
- What is the operating temperature range of the THS7001IPWP?
The operating temperature range is -40°C to 85°C.
- What is the supply voltage range for the THS7001IPWP?
The supply voltage range is ±4.5 V to ±16 V.
- What is the voltage noise of the preamplifier in the THS7001IPWP?
The voltage noise of the preamplifier is 1.7 nV/√Hz.
- What is the bandwidth of the preamplifier and PGA in the THS7001IPWP?
The preamplifier has a 100 MHz bandwidth (-3 dB), and the PGA has a 70 MHz bandwidth (-3 dB).
- What is the gain range and step resolution of the PGA in the THS7001IPWP?
The PGA has a gain range of -22 dB to 20 dB with a 6 dB step resolution.
- Does the THS7001IPWP have output clamp protection?
Yes, the PGA includes both high and low output clamp protection to prevent the output signal from swinging outside the common-mode input range of an analog-to-digital converter.
- What is the slew rate of the THS7001IPWP?
The slew rate is 175 V/µs.
- What is the quiescent supply current for the THS7001IPWP?
The quiescent supply current is typically 7 mA per channel at VCC = ±5 V and 8 mA per channel at VCC = ±15 V.
- What is the total continuous power dissipation at TA = 25°C for the THS7001IPWP?
The total continuous power dissipation is 3.83 W at TA = 25°C.
- What is the purpose of the PowerPAD package in the THS7001IPWP?
The PowerPAD package enhances thermal performance by acting as a heatsink and must be connected to a thermal dissipation plane for proper power dissipation.
