TLC320AD545 Datasheet, PDF (7/37 Pages) Texas Instruments – Single Channel Data/Fax Codec

1 Introduction
The TLC320AD545 single channel data/fax codec is a mixed signal broadband connectivity device. The
TLC320AD545 is comprised of a single channel codec and analog hybrid circuitry with a serial port for communication
with the host processor. The device also contains programmable gain control and one AT41 speaker driver. The
device operates with either a 5-V analog, a 5-V digital, and a 5-V monitor power supply or a 3.3-V analog, a 3.3-V
digital, and a 3.3-V monitor power supply or 5-V analog, 3.3-V digital, and a 5-V monitor power supply. The device
will be packaged in a single 48-pin PT (TQFP) package.
1.1 Features
• Analog, Digital, and Monitor Amp Power Supplies: 5 V or 3.3 V
• Differential and Single-Ended Driving of Analog Output
• Software Power-Down Mode
• Sample Rate Up to 11.025 kHz
• 16-Bit Signal Processing in the Codec With 2s-Complement Data Format
• Typical 80-db Dynamic Range
• Total Signal-to-Noise + Distortion of 80 dB for the ADCs
• Total Signal-to-Noise + Distortion of 78 dB for the DACs
• Programmable Gain Amplifier
• 600-Ω Driver
• 8-Ω AT41 Differential Speaker Driver With Programmable Gain Amplifier
• Flash Write Enable Circuit Provide Power for Writing the Flash Memory Device
• Available in 48-Pin PT (TQFP) Package Operating From –40_C to 85_C
• Transformer Reference ( 2.5 mA Source and Sink at 2.5 V for 5 V-Supply and 1.5 V for 3.3-V Supply) to allow
Single-Ended Driving
1–1