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參數資料
| 型號： | PCM1870RHFT |
| 英文描述： | 16-Bit Low-Power Stereo Audio ADC With Microphone Bias and Microphone Amplifier |
| 中文描述： | 16位低功耗立體聲音頻ADC，具有麥克風偏置和麥克風放大器 |
| 文件頁數： | 1/49頁 |
| 文件大小： | 648K |
| 代理商： | PCM1870RHFT |
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FEATURES
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
μ
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 f
S
/384 f
S
), 12/24, 13/26, 13.5/27, 19.2/38.4,
19.68/39.36 MHz
2 (I
2
C) 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
APPLICATIONS
Portable Audio Player, Cellular Phone
Video Camcorder, Movie Digital Still Camera
PMP/DMB, Voice Recorder
DESCRIPTION
The PCM1870 is a low-power stereo ADC designed
for portable digital audio applications, with line-input
amplifier,
boost
amplifier,
programmable gain control, sound effects, and auto
level control (ALC). It is available in a 24-QFN (4-mm
×
5-mm) package to save footprint. The PCM1870
accepts right-justified, left-justified, I
2
S, 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.
PCM1870
SLAS544–MAY 2007
16-Bit Low-Power Stereo Audio ADC With Microphone Bias and Microphone Amplifier
–
High-Pass Filter and Two-Stage Notch
Filter
Pop Noise Reduction Circuit
Package: 24-QFN (4 mm
×
5 mm)
Operation Temperature Range: –40
°
C to 85
°
C
microphone
bias,
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright 2007, Texas Instruments Incorporated
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