The PCM1870 is a low-power stereo ADC designed for portable digital audio applications, with line-input amplifier, boost amplifier, microphone bias, programmable gain control, sound effects, and auto level control (ALC). It is available in 24-QFN (4-mm × 5-mm) and 24-DSBGA (2.49-mm × 3.49-mm) packages to save footprint. The PCM1870 accepts right-justified, left-justified, I²S, and DSP formats, providing easy interfacing to audio DSP and encoder chips. Sampling rates up to 50 kHz are supported. The user-programmable functions are accessible through a 2- or 3-wire serial control port.

• Analog Front End:
  • Stereo Single End Input With MUX
  • Mono Differential Input
  • Stereo Programmable Gain Amplifier
  • Microphone Boost Amplifier and Bias
• Analog Performances Dynamic Range: 90 dB
• Power-Supply Voltage
  • 1.71 V to 3.6 V for Digital I/O Section
  • 1.71 V to 3.6 V for Digital Core Section
  • 2.4 V to 3.6 V for Analog Section
• Low Power Dissipation:
  • 13 mW in Record, 1.8/2.4 V, 48 kHz, Stereo
  • 5.3 mW in Record, 1.8/2.4 V, 8 kHz, Mono
  • 3.3 W in All Power Down
• Sampling Frequency: 5 kHz to 50 kHz
• Auto Level Control for Recording
• Operation by Single Clock Input Without PLL
• System Clock: Common Audio Clock (256 fS/384 fS), 12/24, 13/26, 13.5/27, 19.2/38.4, 19.68/39.36 MHz
• 2 (I2C) or 3 (SPI) Wire Serial Control
• Programmable Function by Register Control:
  • Digital Soft Mute
  • Power Up/Down Control for Each Module
  • 30-dB to -12-dB Gain for Analog Inputs
  • 0/12/20-dB Boost for Microphone Input
  • Parameter Settings for ALC
  • Three-Band Tone Control and 3D Sound
  • High-Pass Filter and Two-Stage Notch Filter
• Pop Noise Reduction Circuit
• Package:
  • 24-QFN (4 mm × 5 mm)
  • 24-DSBGA (2.49 mm × 3.49 mm)
• Operation Temperature Range: -40°C to 85°C
• APPLICATIONS
  • Portable Audio Player, Cellular Phone
  • Video Camcorder, Movie Digital Still Camera
  • PMP/DMB, Voice Recorder

• Number of ADC channels
• 2
• Analog inputs
• 2
• Digital audio interface
• DSP, I2S, L, R
• Control interface
• I2C, SPI
• Sampling rate (Max) (kHz)
• 50
• ADC SNR (Typ) (dB)
• 90
• Rating
• Catalog

PCM1870的完整型号有：PCM1870RHFR、PCM1870RHFT，以下是这些产品的关键参数及官网采购报价：

PCM1870RHFR，工作温度：-40 to 85，封装：VQFN (RHF)-24，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网PCM1870RHFR的批量USD价格：2.424（1000+）

PCM1870RHFT，工作温度：-40 to 85，封装：VQFN (RHF)-24，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网PCM1870RHFT的批量USD价格：2.865（1000+）

PCM1870EVM - Graphical User Interface (GUI) Software

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