TLC32046CFN Datasheet, PDF (8/56 Pages) Texas Instruments – Wide-Band Analog Interface Circuit

1.1 Features
• 14-Bit Dynamic Range ADC and DAC
• 16-Bit Dynamic Range Input With Programmable Gain
• Synchronous or Asynchronous ADC and DAC Sampling Rates Up to 25,000 Samples Per
Second
• Programmable Incremental ADC and DAC Conversion Timing Adjustments
• Typical Applications
– Speech Encryption for Digital Transmission
– Speech Recognition and Storage Systems
– Speech Synthesis
– Modems at 8-kHz, 9.6-kHz, and 16-kHz Sampling Rates
– Industrial Process Control
– Biomedical Instrumentation
– Acoustical Signal Processing
– Spectral Analysis
– Instrumentation Recorders
– Data Acquisition
• Switched-Capacitor Antialiasing Input Filter and Output-Reconstruction Filter
• Three Fundamental Modes of Operation: Dual-Word (Telephone Interface), Word, and Byte
• 600-mil Wide N Package
• Digital Output in Twos Complement Format
• CMOS Technology
FUNCTION TABLE
DATA
COMMUNICATIONS
FORMAT
SYNCHRONOUS
(CONTROL
REGISTER
BIT D5 = 1)
ASYNCHRONOUS
(CONTROL
REGISTER
BIT D5 = 0)
FORCING CONDITION
DIRECT
INTERFACE
16-bit format
Dual-word
(telephone
interface) mode
Dual-word
Terminal 13 = 0 to 5 V
(telephone interface) Terminal 1 = 0 to 5 V
mode
TMS32020,
TMS320C25,
TMS320C30
16-bit format
Word mode
Word mode
Terminal 13 = VCC_– (– 5 V nom)
Terminal 1 = VCC+ (5 V nom)
TMS32020,
TMS320C25,
TMS320C30,
indirect
interface to
TMS320C10.
(see Figure 7).
8-bit format
(2 bytes required)
Byte mode
Byte mode
Terminal 13 = VCC _– (– 5 V nom) TMS320C17
Terminal 1 = VCC _– (– 5 V nom)
1–2