Texas Instruments TLV320AIC1107PWRG4

Overview

TLV320AIC1107PWRG4 from Texas Instruments is a single-chip PCM audio codec IC designed for voice-band telephony interfaces, performing A/D and D/A conversion, transmit/receive filtering, and volume control in digital handsets and PABX systems. It operates from 2.7 V to 3.3 V, supports 13-bit linear or 8-bit A-law companding, delivers 3.2–4.5 Vpp differential earphone output into 8–32 Ω loads, and features 2.048 MHz master clock input with 8 kHz sampling rate.

For engineers reviewing the TLV320AIC1107PWRG4 datasheet, TLV320AIC1107PWRG4 pinout, TLV320AIC1107PWRG4 application, or TLV320AIC1107PWRG4 equivalent, key selection criteria include its differential microphone/earphone interface, programmable gain via external resistors, mute functions (MICMUTE/EARMUTE), low-power operation (7 mA active, 30 µA power-down), and TSSOP-20 package compatibility with voice-band telecom signal chains.

Technical Context

The TLV320AIC1107PWRG4 integrates a third-order sigma-delta analog modulator for transmit path and a second-order digital modulator/filter for receive path, both synchronized to a 2.048 MHz master clock. Its digital PLL locks to MCLK to generate internal clocks for filters and converters, ensuring compliance with CCITT G.714 requirements for both transmit and receive filtering.

It implements dual-microphone amplifiers: MIC Amp 1 provides externally adjustable gain (e.g., 23.5 dB using R2=34 kΩ/R3=510 kΩ), while MIC Amp 2 offers fixed 6 dB gain. Volume control is programmable only in linear mode via RXVOL[2:0] bits in the 16-bit PCMI word, enabling −18 dB to +3 dB adjustment in 3-dB steps.

Key Specifications

Pinout & Package

TLV320AIC1107PWRG4 is housed in a 20-terminal TSSOP (PW) package, 6.5 mm × 4.4 mm, 0.65 mm pitch, JEDEC MO-153 compliant, with exposed pad not electrically connected. Pin 1 is located at top-left corner (Q1 quadrant) in tape-and-reel orientation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PCM codec applications.

Compared with TLV320AIC1107PWRG4, TLV320AIC10IDBT omits integrated earphone drive and mute logic-requiring external circuitry-while CS42L52-CNZ adds stereo capability and LDOs but sacrifices A-law compatibility and increases package size, making TLV320AIC1107PWRG4 optimal for compact, single-channel, standards-compliant voice terminals.

Availability

TLV320AIC1107PWRG4 is available at Aetrix Electronics and suitable for digital handsets, cordless phone base stations, and digital PABX terminals requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for TLV320AIC1107PWRG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with over 50 years of innovation in precision signal chain and power management ICs.

The TLV320AIC1107PWRG4 belongs to TI's TLV320AIC voice-band codec family, engineered specifically for low-power, high-fidelity telephony interfaces in portable and infrastructure voice equipment.

FAQ

What is the primary function of the TLV320AIC1107PWRG4 in a voice communication system?

The TLV320AIC1107PWRG4 serves as a complete single-chip PCM codec, handling analog-to-digital conversion of microphone signals, digital-to-analog conversion for earphone output, and digital filtering for both paths. It supports 8 kHz sampling synchronized to a 2.048 MHz master clock and operates in either 13-bit linear or 8-bit A-law companding mode-making it ideal for digital handsets and PABX terminals. Its integrated microphone preamp, earphone driver, and mute controls reduce external component count significantly.

How does the TLV320AIC1107PWRG4 handle microphone gain configuration?

The TLV320AIC1107PWRG4 uses an external resistor network connected to MICGAIN+ (pin 9) and MICGAIN− (pin 12) to set the gain of MIC Amp 1. With recommended values R2 = 34 kΩ and R3 = 510 kΩ, it achieves 23.5 dB gain. MIC Amp 2 provides fixed 6 dB gain. The microphone inputs (MICIN+ and MICIN−) must be AC-coupled, and 1% resistor tolerance is specified to meet noise and distortion performance targets. Gain configuration is fully analog and independent of digital control.

Can the TLV320AIC1107PWRG4 drive low-impedance earphones directly, and what is its maximum output power?

Yes, the TLV320AIC1107PWRG4 drives earphones directly in differential mode. Into an 8 Ω load, it delivers up to 200 mW (typical) at 3-dBm0 output level with volume control set to −3 dB. Output power scales with load impedance: 160 mW into 16 Ω and 100 mW into 32 Ω. The EAROUT+ and EAROUT− outputs are optimized for low THD+N (<0.1%) and include built-in click/pop suppression, eliminating need for external RC snubbers in most implementations.

What are the power consumption characteristics of the TLV320AIC1107PWRG4 in active and power-down modes?

In active operation at 2.7 V, the TLV320AIC1107PWRG4 draws 7 mA typical supply current (16.2 mW max). In power-down mode-with MCLK inactive-the device consumes only 30 µA (81 µW), automatically entered upon loss of MCLK transitions. Power-down places PCMO in high-impedance state and disables all analog blocks except bias circuits. Full functionality resumes within 10 ms after power-up sequence including RESET assertion with MCLK active.

How is volume control implemented in the TLV320AIC1107PWRG4, and which modes support it?

Volume control is implemented exclusively in linear mode via the three least-significant bits (RXVOL[2:0]) of the 16-bit PCMI word. These bits program gain from −18 dB to +3 dB in 3-dB steps. In A-law mode, volume is fixed at 0 dB and RXVOL bits are ignored. The volume setting is applied per-sample, allowing dynamic real-time adjustment without register writes or I²C/SPI interface-reducing host processor overhead and simplifying firmware design for voice applications.