Texas Instruments AFE5401-EP Quad-Channel Analog Front-End (AFE)

Texas Instruments AFE5401-EP Quad-Channel Analog Front-End (AFE) targets applications where the level of integration is critical. The device has four channels, with each comprising a programmable gain amplifier (PGA), a low-noise amplifier (LNA), a programmable equalizer (EQ), and an antialias filter, along with a high-speed, 12-bit, analog-to-digital converter (ADC) at 25MSPS per channel.

Each of the four differential input pairs is amplified by an LNA and followed by a PGA with a programmable gain range from 0dB to 30dB. An antialias low-pass filter (LPF) is also integrated between the ADC and PGA for each channel.

Each PGA, LNA, and antialiasing filter output is differential (limited to 2V_PP). The antialiasing filter drives the on-chip, 12-bit, 25MSPS ADC. The four ADC outputs are multiplexed on a 12-bit, parallel CMOS output bus. The Texas Instruments AFE5401-EP is available in a 9mm × 9mm, VQFN-64 package and is specified over a temperature range of –40°C to +125°C.

Features

Integrated analog front-end includes a quad LNA, equalizer, PGA, antialiasing filter, and ADC
Input-referred noise with 30dB PGA gain
- 2.9nV/√ Hz for 15dB LNA gain
- 2.0nV/√ Hz for 18dB LNA gain with HIGH_POW_LNA mode
Simultaneous sampling across channels
Programmable LNA gain of 12dB, 15dB, 16.5dB, and 18dB
Programmable equalizer modes
Built-in diagnostic modes
Temperature sensor
Programmable-gain amplifiers (PGAs) programmable from 0dB to 30dB in 3dB steps
Programmable, third-order, antialiasing filter of 7MHz, 8MHz, 10.5MHz, and 12MHz
Parallel CMOS outputs

Analog-to-Digital Converter (ADC)
- Quad channel, 12-bits, 25MSPS per channel
- No external decoupling is required for references
64mW total core power per channel at 25MSPS per channel
Supplies of 1.8V and 3.3V
9mm × 9mm VQFN-64 package
Device temperature of –40°C to 125°C (ambient operating temperature range)
Supports defense, aerospace, and medical applications
- Controlled baseline
- One assembly and test site
- One fabrication site
- Extended product life cycle
- Product traceability
- VID V62/25601