PCM1861
PCM1861 is 4-Channel or 2-Channel 192-kHz Audio ADCs manufactured by Texas Instruments.
- Part of the PCM1860 comparator family.
- Part of the PCM1860 comparator family.
Features
- 1 High SNR Performance:
- 110-d B SNR (PCM1861/63/65)
- 103-d B SNR (PCM1860/62/64)
- ADC Sample Rate (f S) = 8 k Hz to 192 k Hz
- Up To Four Independent ADC Channels Available
- Single-Ended, 2.1-VRMS Full-Scale (FS) Input
- Differential, 4.2-VRMS FS Input
- Hardware (HW) Control: PCM1860/61
- Software (SW) Control (I2C or SPI):
PCM1862/63/64/65
- Support for Up To Four Digital Microphones
(SW-Controlled Devices)
- Programmable Gain Amplifier (PGA):
- Fixed Gain: 0 d B, 12 d B, 32 d B (PCM1860/61)
- SW-Controlled Gain:
- 12 d B to +32 d B (PCM1862/63/64/65)
- Integrated High-Performance Audio PLL
- Single 3.3-V Power-Supply Operation
- Power Dissipation at 3.3 V:
- < 85 m W (PCM1860/61/62/63)
- < 145 m W (PCM1864/65)
- Energysense Audio Content Detector for Auto System Wakeup and Sleep
- Master or Slave Audio Interface
- Automatic PGA Clipping Suppression Control
- PCB-Footprint patibility Across All Devices
2 Applications
- Home Theater and TV
- Voice Controlled Devices
- Bluetooth® Speaker
- Microphone Array Processors
3 Description
The PCM186x family (PCM1860, PCM1861, PCM1862, PCM1863, PCM1864, and PCM1865) of audio front-end devices take a new approach to audio-function integration to ease pliance with European Ecodesign legislation, while enabling highperformance end products at reduced cost. The PCM186x support single-supply operation at 3.3 V, and offer an integrated programable gain amplifier (PGA) in a small package; this configuration makes it feasible to implement smaller and smarter products at a reduced cost.
The PCM186x audio front end supports single-ended input levels from small-m V microphone inputs to 2.1VRMS line inputs, without external resistor dividers. The front-end mixer (MIX), multiplexer (MUX), and PGA also support differential (Diff), pseudodifferential, and single-ended (SE) inputs, making these devices an ideal interface for products that require interference suppression. The PCM186x integrate many system-level functions that assist or...
