TCM320AC37CDW Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
Texas Instruments TCM320AC37CDW is a voice-band audio processor CODEC with A-Law companding, 13-bit linear coding, and synchronous/asynchronous operation in a 20-SOIC package. From $4.00 in stock, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- TCM320AC37CDW Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TCM320AC37CDW?
- A-Law companding CODEC with 13-bit linear coding for voice-band telephony
- Supports both synchronous and asynchronous operating modes for flexible PCM interfacing
- Integrated filter stage with 1 dB max gain tolerance for precise audio signal conditioning
- 20-SOIC package with plastic/epoxy body for straightforward board assembly
- 0 to 70°C commercial temperature range suitable for telecom and industrial voice systems
What is TCM320AC37CDW used for?
The TCM320AC37CDW is designed for voice-band telephony equipment including PBX systems, VoIP gateways, and ISDN terminal adapters where A-Law PCM encoding and decoding is mandated by international standards. It also suits legacy DSP-based audio interfaces in industrial communication equipment requiring synchronous or asynchronous PCM serial streams. Embedded telecom modules and line cards benefit from its integrated filter and companding to minimize external component count.
What are the specifications of TCM320AC37CDW?
| Pbfree Code | No |
| YTEOL | 0 |
| Companding Law | A-LAW |
| Filter | YES |
| Gain Tolerance-Max | 1dB |
| JESD-30 Code | R-PDSO-G20 |
| Linear Coding | 13-BIT |
| Number of Functions | 1 |
| Operating Mode | SYNCHRONOUS/ASYNCHRONOUS |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP20,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Supply Current-Max | 7.5mA |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Telecom IC Type | PCM CODEC |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.01 |
Where can I find the TCM320AC37CDW datasheet?
TCM320AC37CDW Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TCM320AC37CDW?
Compatible alternatives and drop-in replacements for TCM320AC37CDW:
Frequently Asked Questions
What companding law and bit depth does the TCM320AC37CDW support for voice encoding?
The TCM320AC37CDW implements A-Law companding with 13-bit linear coding, which is the standard used in European and international telephony. This produces 8-bit PCM output at 64 kbps per channel, meeting ITU-T G.711 requirements for voice-band transmission in PBX and VoIP gateway applications.
Can the TCM320AC37CDW operate in both synchronous and asynchronous PCM clock modes?
Yes, the TCM320AC37CDW supports both synchronous and asynchronous operating modes, giving engineers flexibility when interfacing with different PCM backplane or DSP clock sources. This dual-mode capability reduces the need for external clock recovery circuits in mixed-timing telecom line card designs.
For a PBX line card design, what gain tolerance does the TCM320AC37CDW's internal filter provide?
The internal filter in the TCM320AC37CDW maintains a maximum gain tolerance of 1 dB across the voice band, ensuring consistent signal levels in multi-channel PBX line cards. This precision reduces the need for external trimming components, simplifying board design and lowering BOM cost.
What is the package and operating temperature range of the TCM320AC37CDW, and how does it affect PCB assembly?
The TCM320AC37CDW comes in a 20-pin SOIC (PDSO-G20) package with a plastic/epoxy body, rated from 0°C to 70°C. The wide 20-pin pitch of the SOIC makes it compatible with standard SMT reflow assembly, simplifying manufacturing compared to fine-pitch alternatives in commercial telecom equipment.
Related Guides
STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply
Choose the right STM32H725 variant by comparing Flash, package, pin count, temperature grade, connectivity, and production requirements.
Aug 1, 2026
STM32H725IGT3 High-Performance MCU Design Guide
Design STM32H725IGT3 systems for reliable 550 MHz operation with practical power, clock, cache, DMA, PCB, ADC, and recovery guidance.
Jul 31, 2026
150141VS73100 Violet SMD LED Selection Guide: Color, Drive, and Sourcing
Select the 150141VS73100 by wavelength, brightness, drive current, 3528 fit, reliability, and traceable sourcing requirements.
Jul 31, 2026
STEF05SGR 5 V eFuse Protection Design Guide
Design a reliable 5 V STEF05SGR eFuse stage with current-limit math, capacitor sizing, thermal analysis, fault recovery, and PCB layout guidance.
Jul 30, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit