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TLC32046C, TLC32046I, TLC32046M
Data Manual
Wide-Band Analog Interface Circuit
SLAS028
May 1995
IMPORTANT NOTICE
Texas Instruments (TI) reserves the right to make changes to its products or to discontinue any
semiconductor product or service without notice, and advises its customers to obtain the latest
version of relevant information to verify, before placing orders, that the information being relied
on is current.
TI warrants performance of its semiconductor products and related software to the specifications
applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality
control techniques are utilized to the extent TI deems necessary to support this warranty.
Specific testing of all parameters of each device is not necessarily performed, except those
mandated by government requirements.
Certain applications using semiconductor products may involve potential risks of death,
personal injury, or severe property or environmental damage (“Critical Applications”).
TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT APPLICATIONS, DEVICES
OR SYSTEMS OR OTHER CRITICAL APPLICATIONS.
Inclusion of TI products in such applications is understood to be fully at the risk of the customer.
Use of TI products in such applications requires the written approval of an appropriate TI officer.
Questions concerning potential risk applications should be directed to TI through a local SC
sales office.
In order to minimize risks associated with the customer’s applications, adequate design and
operating safeguards should be provided by the customer to minimize inherent or procedural
hazards.
TI assumes no liability for applications assistance, customer product design, software
performance, or infringement of patents or services described herein. Nor does TI warrant or
represent that any license, either express or implied, is granted under any patent right, copyright,
mask work right, or other intellectual property right of TI covering or relating to any combination,
machine, or process in which such semiconductor products or services might be or are used.
Copyright
1995, Texas Instruments Incorporated
Contents
Section
1
Title
Page
1–1
1–2
1–3
1–6
1–6
1–7
2–1
2–2
2–4
2–4
2–4
2–4
2–4
2–4
2–5
2–5
2–5
2–5
2–6
2–6
2–6
2–6
2–6
2–7
2–7
2–7
2–7
2–8
2–8
2–9
2–10
2–10
2–11
2–11
2–11
2–12
2–12
2–13
iii
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Functional Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Terminal Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.4 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5 Terminal Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Detailed Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Internal Timing Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Analog Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 A/D Band-Pass Filter, Clocking, and Conversion Timing . . . . . . . . . . . . . . . . . . . .
2.4 A/D Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5 Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6 D/A Low-Pass Filter, Clocking, and Conversion Timing . . . . . . . . . . . . . . . . . . . . .
2.7 D/A Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.8 Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9 Synchronous Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9.1 One 16-Bit Word . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9.2 Two 8-Bit Bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.9.3 Synchronous Operating Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.10 Asynchronous Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.10.1 One 16-Bit Word . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.10.2 Two 8-Bit Bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.10.3 Asynchronous Operating Frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.11 Operation of TLC32046C and TLC32046I With Internal Voltage Reference . . .
2.12 Operation of TLC32046C AND TLC32046I With External Voltage Reference .
2.13 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.14 Loopback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.15 Communications Word Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.15.1 Primary DR Word Bit Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.15.2 Primary DX Word Bit Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.15.3 Secondary DX Word Bit Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.16 Reset Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.17 Power-Up Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.18 AIC Register Constraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.19 AIC Responses to Improper Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.20 Operation With Conversion Times Too Close Together . . . . . . . . . . . . . . . . . . . . .
2.21 More Than One Receive Frame Sync Occurring Between Two Transmit
Frame Syncs – Asynchronous Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.22 More Than One Transmit Frame Sync Occurring Between Two Receive
Frame Syncs – Asynchronous Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
Section
Title
Page
2–13
2–14
2–14
2–14
2–15
2–15
2–16
3–1
3–1
3–1
3–2
3–2
3–2
3–2
3–3
3–3
3–3
3–4
3–4
3–4
3–5
3–5
3–6
3–6
3–6
3–6
3–7
2.23 More than One Set of Primary and Secondary DX Serial Communications
Occurring Between Two Receive Frame Syncs – Asynchronous Operation . . .
2.24 System Frequency Response Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.25 (Sin x)/x Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.26 (Sin x)/x Roll-Off for a Zero-Order Hold Function . . . . . . . . . . . . . . . . . . . . . . . . . .
2.27 Correction Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.28 Correction Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.29 TMS320 Software Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Absolute Maximum Ratings Over Operating Free-Air Temperature Range . . . .
3.2 Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Electrical Characteristics Over Recommended Operating Free-Air
Temperature Range, V
CC+
= 5 V, V
CC –
= – 5 V, V
DD
= 5 V . . . . . . . . . . . . . . . . .
3.3.1 Total Device, MSTR CLK Frequency = 5.184 MHz . . . . . . . . . . . . . . . . .
3.3.2 Power Supply Rejection and Crosstalk Attenuation . . . . . . . . . . . . . . . . .
3.3.3 Serial Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.4 Receive Amplifier Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.5 Transmit Filter Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.6 Receive and Transmit Channel System Distortion, SCF Clock
Frequency = 288 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.7 Receive Channel Signal-to-Distortion Ratio . . . . . . . . . . . . . . . . . . . . . . .
3.3.8 Transmit Channel Signal-to-Distortion Ratio . . . . . . . . . . . . . . . . . . . . . . .
3.3.9 Receive and Transmit Gain and Dynamic Range . . . . . . . . . . . . . . . . . . .
3.3.10 Receive Channel Band-Pass Filter Transfer Function,
SCF f
clock
= 288 kHz, Input (IN+ – IN –) Is A + 3-V Sine Wave . . . . . . .
3.3.11 Receive and Transmit Channel Low-Pass Filter Transfer Function,
SCF f
clock
= 288 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Operating Characteristics Over Recommended Operating Free-Air
Temperature Range, V
CC+
= 5 V, V
CC –
= – 5 V, V
DD
= 5 V . . . . . . . . . . . . . . . . .
3.4.1 Receive and Transmit Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 Timing Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.1 Serial Port Recommended Input Signals . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5.2 Serial Port – AIC Output Signals, C
L
= 30 pF for SHIFT CLK Output,
C
L
= 15 pF For All Other Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
5
6
Parameter Measurement Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1
Typical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–1
Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6–1
iv
