Overview
The TAS5414C-Q1 is a four-channel digital audio amplifier designed by Texas Instruments for use in automotive environments. This device is part of the TAS54x4C-Q1 family, which includes the TAS5414C-Q1 and TAS5424C-Q1 models. The TAS5414C-Q1 is specifically tailored for applications requiring single-ended analog inputs, while the TAS5424C-Q1 uses differential inputs. These amplifiers are optimized for high efficiency, reliability, and compliance with automotive EMC requirements.
The TAS5414C-Q1 provides four channels, each capable of delivering 23 W continuously into 4 Ω at less than 1% THD+N from a 14.4-V supply. It also supports higher power output into 2 Ω loads. The device features advanced protection mechanisms, including short-circuit protection, load-dump protection, overtemperature protection, and over- and undervoltage conditions. Additionally, it includes load diagnostic functions and output DC level detection during music playback.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| DC Supply Voltage Range | Relative to GND | 6 | 14.4 | 24 | V |
| Analog Audio Input Signal Level (TAS5414C-Q1) | AC-coupled input voltage | 0 | 0.25–1 | Vrms | |
| Ambient Temperature Range | –40 | 105 | °C | ||
| Output Power per Channel (4 Ω, THD+N ≤1%, 1 kHz) | PVDD = 14.4 V, Tc = 75°C | 23 | W | ||
| Output Power per Channel (2 Ω, THD+N ≤1%, 1 kHz) | PVDD = 14.4 V, Tc = 75°C | 38 | W | ||
| Power Efficiency (4 channels operating, 23-W output power/ch) | L = 10 μH, TJ ≤85°C | 90% | % | ||
| Noise Voltage at Output (Zero input, A-weighting) | 60 | 100 | μV | ||
| Channel Crosstalk (P = 1 W, f = 1 kHz, enhanced crosstalk enabled via I2C) | 70 | 85 | dB | ||
| Common-Mode Rejection Ratio (TAS5424C-Q1, f = 1 kHz, 1 Vrms referenced to GND, G = 26 dB) | 60 | 75 | dB | ||
| Power-Supply Rejection Ratio | dB |
Key Features
- AEC-Q100 Qualified for Automotive Applications: Ensures the device meets stringent automotive standards, including device temperature range of –55°C to 125°C and HBM/CDM classification levels.
- Single-Ended Input (TAS5414C-Q1) and Differential Input (TAS5424C-Q1): Supports different input configurations to suit various system requirements.
- Four-Channel Digital Power Amplifier: Provides four independent channels for versatile audio applications.
- Advanced Protection Mechanisms: Includes short-circuit protection, load-dump protection up to 50 V, overtemperature protection, and over- and undervoltage conditions.
- Load Diagnostic Functions: Detects and diagnoses misconnected outputs, reducing test time during manufacturing.
- High Efficiency: Digital PWM topology improves efficiency, reducing power dissipation by a factor of ten under typical music playback conditions.
- Compliance with Automotive EMC Requirements: Designed to meet automotive electromagnetic compatibility standards.
- ISO9000:2002 TS16949 Certified: Ensures adherence to quality management and automotive industry standards.
Applications
- OEM/Retail Head Units: Ideal for use in original equipment manufacturer (OEM) and retail automotive head units.
- Amplifier Modules: Suitable for external amplifier modules where feature densities and system configurations require reduced heat from the audio power amplifier.
Q & A
- What is the output power per channel of the TAS5414C-Q1 at 4 Ω and 1% THD+N?
The output power per channel is 23 W at 4 Ω and 1% THD+N from a 14.4-V supply.
- What is the maximum ambient temperature range for the TAS5414C-Q1?
The ambient temperature range is –40°C to 105°C.
- Does the TAS5414C-Q1 support differential inputs?
No, the TAS5414C-Q1 uses single-ended analog inputs. The TAS5424C-Q1 model supports differential inputs.
- What protection mechanisms are built into the TAS5414C-Q1?
The device includes short-circuit protection, load-dump protection, overtemperature protection, and over- and undervoltage conditions.
- How efficient is the TAS5414C-Q1 under typical music playback conditions?
The device achieves an efficiency of 90% under typical music playback conditions, significantly reducing power dissipation.
- Is the TAS5414C-Q1 compliant with automotive EMC requirements?
Yes, the device is designed to meet automotive electromagnetic compatibility standards.
- What is the package type for the TAS5414C-Q1?
The TAS5414C-Q1 comes in a 64-pin QFP (PHD) power package with a heat slug.
- Does the TAS5414C-Q1 have load diagnostic functions?
Yes, it includes load diagnostic functions for detecting and diagnosing misconnected outputs.
- What is the common-mode rejection ratio (CMRR) for the TAS5424C-Q1?
The CMRR for the TAS5424C-Q1 is 60 to 75 dB at 1 kHz.
- Is the TAS5414C-Q1 certified under any quality management standards?
Yes, it is ISO9000:2002 TS16949 certified.
