TP3064, TP3067 ``Enhanced'' Serial Interface
CMOS CODEC/Filter COMBOé
General Description
The TP3064 (m-law) and TP3067 (A-law) are monolithic
PCM CODEC/Filters utilizing the A/D and D/A conversion
architecture shown in Figure 1 , and a serial PCM interface.
The devices are fabricated using National's advanced double-
poly CMOS process (microCMOS).
Similar to the TP305X family, these devices feature an additional
Receive Power Amplifier to provide push-pull balanced
output drive capability. The receive gain can be adjusted
by means of two external resistors for an output level
of up to g6.6V across a balanced 600X load.
Also included is an Analog Loopback switch and a TSX output.
See also AN-370, ``Techniques for Designing with CODEC/
Filter COMBO Circuits.''