NXP Semiconductors TDA8780M
The TDA8780M is a true logarithmic amplifier intended for dynamic range reduction of IF signals at 10.7 MHz in digital radio receivers. It offers true logarithmic characteristics over a 72 dB input dynamic range, has a small-signal gain-adjustment facility and a constant limiting output voltage for large input levels.| Part No. | TDA8780M |
|---|---|
| Datasheet | TDA8780M Download |
| Manufacturer |  NXP Semiconductors |
| Description | True logarithmic amplifier |
| Buy | Stock & Price |
FEATURES
● 72 dB true logarithmic dynamic range● Small-signal gain-adjustment facility
● Constant limiting output voltage
● Temperature and DC power supply voltage independent
● Easy interfacing to analog-to-digital converters
● Output DC level shift facility.
APPLICATIONS
● Dynamic range compression● IF signal dynamic range reduction in digital receivers
● Compression receivers.
GENERAL DESCRIPTION
QUICK REFERENCE DATA SYMBOL VP IP IP(PD) fin Vin(M) Tamb supply voltage supply current supply current in power-down mode operating input frequency dynamic logarithmic input voltage (peak value) operating ambient temperature PARAMETER − − − 0.06 −20 MIN. 4.5 5.0 − − − − − TYP. TDA8780M A unique feature is the smooth “changeover” from linear operation (inputs less than 60 µV) to logarithmic mode. The device is manufactured in an advanced BiCMOS process which enables high performance being obtained with low DC power supply consumption. The true logarithmic amplifier can be driven by single-ended or differential inputs.
