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부품번호 PCM1870 기능
기능 16-Bit Low-Power Stereo Audio ADC
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PCM1870 데이터시트, 핀배열, 회로
BurrĆBrown Products
from Texas Instruments
PCM1870
SLAS544 – MAY 2007
16-Bit Low-Power Stereo Audio ADC With Microphone Bias and Microphone Amplifier
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 µW in All Power Down
Sampling Frequency: 5 kHz to 50 kHz
Auto Level Control for Recording
Operation by Single Clock Input Without PLL
www.DataSheet4U.com 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)
Operation Temperature Range: –40°C to 85°C
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, microphone bias,
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, 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.
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




PCM1870 pdf, 반도체, 판매, 대치품
PCM1870
SLAS544 – MAY 2007
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
All specifications at TA = 25°C, VDD = VIO = VCC = VPA = 3.3 V, fS = 48 kHz, system clock = 256 fS, and 16-bit data, unless
otherwise noted
PARAMETER
Group delay
High-Pass Filter for ADC
Frequency response (fc = 4 Hz)
Frequency response (fc = 120 Hz)
Frequency response (fc = 240 Hz)
POWER SUPPLY AND SUPPLY CURRENT
VIO
VDD Voltage range
VCC
Supply current
Power dissipation
TEMPERATURE CONDITION
Operation temperature
θJA Thermal resistance
TEST CONDITIONS
–3 dB
–0.5 dB
–0.1 dB
–3 dB
–0.5 dB
–0.1 dB
–3 dB
–0.5 dB
–0.1 dB
VIO
VDD
VCC
BPZ input, all active, no load
All inputs are held static.
BPZ input
All inputs are held static.
PCM1870RHF
MIN TYP
17/fS
MAX
UNIT
s
3.74
10.66
24.20
118.77
321.75
605.52
235.68
609.95
2601.2
Hz
Hz
Hz
1.71 3.3 3.6
1.71 3.3 3.6 VDC
2.4 3.3 3.6
8 12 mA
1 10 µA
26.4 39.6 mW
3.3 33 µW
–40 85 °C
35 °C/W
PIN ASSIGNMENTS
RHF Package
(Top View)
VCOM
AIN2R
AIN2L
MODE
MS/ADR
MD/SDA
MC/SCL
24 23 22 21 20
1 19
2 18
3 17
4 16
5 15
6 14
7 13
8 9 10 11 12
PGINL
AOL
PGINR
AOR
TEST
LRCK
BCK
P0057-01
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PCM1870 전자부품, 판매, 대치품
PCM1870
www.ti.com
SLAS544 – MAY 2007
TYPICAL PERFORMANCE CURVES
All specifications at TA = 25°C, VDD = VIO = VCC = VPA = 3.3 V, fS = 8 kHz to 48 kHz, system clock = 256 fS and 16-bit data,
unless otherwise noted.
DECIMATION FILTER, STOP-BAND
0
DECIMATION FILTER, PASS-BAND
0.2
–20
0.1
–40
–60 0
–80
–100
–0.1
–120
0
123
Frequency [´ fS]
Figure 1.
4
G001
HIGH-PASS FILTER PASS-BAND CHARACTERISTICS
(fC = 4 Hz at 48 kHz)
5
–0.2
0
0.1 0.2 0.3 0.4
Frequency [´ fS]
Figure 2.
0.5
G002
HIGH-PASS FILTER PASS-BAND CHARACTERISTICS
(fC = 120 Hz at 48 kHz)
5
00
–5 –5
–10 –10
–15 –15
–20
0
0.0005
0.001
0.0015
Frequency [´ fS]
Figure 3.
0.002
G003
–20
0
0.005 0.01 0.015
Frequency [´ fS]
Figure 4.
0.02
G012
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관련 데이터시트

부품번호상세설명 및 기능제조사
PCM1870

16 Bits Low Power Stereo Audio ADC w/Microphone Bias Microphone Amplifier (Rev. A)

Texas Instruments
Texas Instruments
PCM1870

16-Bit Low-Power Stereo Audio ADC

Burr-Brown
Burr-Brown

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