Packaging information
| Package | Pins TSSOP (DBT) | 30 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 60 | TUBE |
Features for the PCM1864
- High SNR Performance:
- 110-dB SNR (PCM1861/63/65)
- 103-dB SNR (PCM1860/62/64)
- ADC Sample Rate (fS) = 8 kHz to 192 kHz
- 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 dB, 12 dB, 32 dB
(PCM1860/61) - SW-Controlled Gain: –12 dB to +32
dB
(PCM1862/63/64/65)
- Fixed Gain: 0 dB, 12 dB, 32 dB
- Integrated High-Performance Audio PLL
- Single 3.3-V Power-Supply Operation
- Power Dissipation at 3.3 V:
- < 85 mW (PCM1860/61/62/63)
- < 145 mW (PCM1864/65)
- Energysense Audio Content Detector for Auto System Wakeup and Sleep
- Master or Slave Audio Interface
- Automatic PGA Clipping Suppression Control
- PCB-Footprint Compatibility Across All Devices
Description for the PCM1864
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 compliance with European Ecodesign legislation, while enabling high-performance 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-mV microphone inputs to 2.1-VRMS line inputs, without external resistor dividers. The front-end mixer (MIX), multiplexer (MUX), and PGA also support differential (Diff), pseudo-differential, 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 replace some DSP functions.
An integrated band-gap voltage reference provides excellent PSRR, so that a dedicated analog 3.3-V rail may not be required.