Overview
The PCM3500E/2K, produced by Texas Instruments, is a low-voltage, low-power, 16-bit mono voice/modem CODEC. This component is designed for various applications including modem Analog Front End (AFE) and speech processing. It operates from a single power supply of +2.7V to +3.6V, making it ideal for portable devices. The PCM3500E/2K integrates all necessary functions for a modem or voice CODEC, including delta-sigma analog-to-digital and digital-to-analog converters, input anti-aliasing filter, digital high-pass filter for DC blocking, and an output low-pass filter. The synchronous serial interface supports Time Division Multiplexing (TDM), allowing up to four CODECs to share a single 4-wire serial bus.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 16 | - | - | Bits |
| Operating Supply Voltage | 2.7 | 3.3 | 3.6 | VDC |
| Supply Current (VCC = 3.3V) | 9 | 12 | - | mA |
| Power-Down Current (VCC = 3.3V) | - | 60 | - | µA |
| Output Power | - | 30 | - | mW |
| Sampling Frequency (fS) | 7.2 | 8 | 26 | kHz |
| System Clock Frequency | 3.686 | 4.096 | 13.312 | MHz |
| Dynamic Range (ADC) | 82 | 88 | - | dB |
| Signal-to-Noise Ratio (ADC) | 82 | 88 | - | dB |
| Operating Temperature Range | -25 | - | 85 | °C |
Key Features
- Low power operation with a single +2.7V to +3.6V power supply
- Integrated power-down mode with 60µA typical current
- 16-bit resolution with delta-sigma analog-to-digital and digital-to-analog converters
- Input anti-aliasing filter, digital high-pass filter, and output low-pass filter
- Synchronous serial interface supporting Time Division Multiplexing (TDM)
- Master or Slave operation with on-chip crystal oscillator circuit
- ADC-to-DAC loop-back mode and Time Slot mode support
- Small package: 24-pin SSOP
Applications
- Software modems for personal digital assistants, notebook and hand-held PCs, set-top boxes, and digital televisions
- Portable voice recorders and players
- Speech recognition and synthesis systems
- Teleconferencing products
- Embedded systems
Q & A
- What is the operating voltage range of the PCM3500E/2K? The operating voltage range is +2.7V to +3.6V.
- What is the typical power-down current of the PCM3500E/2K? The typical power-down current is 60µA.
- What is the resolution of the PCM3500E/2K? The resolution is 16 bits.
- What types of filters are integrated into the PCM3500E/2K? The component includes an input anti-aliasing filter, a digital high-pass filter, and an output low-pass filter.
- Does the PCM3500E/2K support Time Division Multiplexing (TDM)? Yes, it supports TDM, allowing up to four CODECs to share a single 4-wire serial bus.
- What is the typical dynamic range of the ADC in the PCM3500E/2K? The typical dynamic range of the ADC is 88 dB.
- What is the operating temperature range of the PCM3500E/2K? The operating temperature range is -25°C to +85°C.
- What package type is the PCM3500E/2K available in? It is available in a 24-pin SSOP package.
- Can the PCM3500E/2K be used in life support devices? No, Texas Instruments does not authorize or warrant the use of the PCM3500E/2K in life support devices and/or systems.
- What is the maximum junction temperature for the PCM3500E/2K? The maximum junction temperature is 150°C.
