PGA5807A Datasheet, PDF (1/27 Pages) Texas Instruments – 8-Channel, High-Bandwidth, Analog Front-End

PGA5807A
www.ti.com
SBAS632 – OCTOBER 2013
8-Channel, High-Bandwidth, Analog Front-End
Check for Samples: PGA5807A
FEATURES
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•2 8-Channel Complete AFE:
– LNA, PGA, and LPF
– Full-Channel Gain: 12 dB to 30 dB
– Input-Referred Noise: 2.1 nV/√Hz
• LNA:
– Gain: 12 dB
– Fully Differential
– Wide Input Common-Mode Support:
2.1 ± 200 mV
– Maximum Linear Input Range: 500 mV_PP
• PGA Gain: 0 dB to 18 dB
– With 3-dB Gain Steps
– Programmable via Either Serial Interface or
External Pins
• Maximum Total Channel Gain: 30 dB
• Programmable LPF:
– Corner Frequency: 75 MHz, 60 MHz
• Power (Full-Chain):
– 60 mW per Channel
• Fast and Consistent Overload Recovery
• Small Package: 9-mm × 9-mm QFN-64
APPLICATIONS
• Data Acquisition Front Ends
• Ultrasound Imaging
DESCRIPTION
The PGA5807A is an 8-channel, high-bandwidth,
analog front-end (AFE). The device functions on a
single 3.3-V analog supply. The device supports high-
bandwidth input frequencies with a total power of 60
mW per channel. The PGA5807A consists of a low-
noise amplifier (LNA), a programmable gain amplifier
(PGA), and a programmable low-pass filter (LPF).
The LNA has a fixed 12-dB gain (the differential
amplifier supports both direct and capacitive input
coupling) and supports a maximum linear input range
of 500 mV_PP.
The device provides gain options from 0 dB to 18 dB,
in 3-dB gain steps. This 18-dB PGA gain can be
programmed using either the serial interface or
external pins. The PGA5807A integrates an
antialiasing filter in the form of an LPF to reduce
noise. The device is available in a very small, 9-mm ×
9-mm QFN-64 package and is specified for operation
over the –40°C to +85°C temperature range.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2013, Texas Instruments Incorporated