參數(shù)資料
型號(hào): ADAU1702JSTZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 11/52頁(yè)
文件大?。?/td> 0K
描述: IC AUDIO PROC 2ADC/4DAC 48-LQFP
標(biāo)準(zhǔn)包裝: 1
系列: SigmaDSP®
類型: 音頻處理器
應(yīng)用: 車(chē)載,監(jiān)視器,MP3
安裝類型: 表面貼裝
封裝/外殼: 48-LQFP
供應(yīng)商設(shè)備封裝: 48-LQFP(7x7)
包裝: 托盤(pán)
產(chǎn)品目錄頁(yè)面: 776 (CN2011-ZH PDF)
ADAU1702
Rev. C | Page 19 of 52
VOLTAGE REGULATOR
Two specifications must be considered when choosing a
regulator transistor: The transistor’s current amplification factor
(hFE or beta) should be at least 100, and the transistor’s collector
must be able to dissipate the heat generated when regulating
from 3.3 V to 1.8 V. The maximum digital current drawn from
the ADAU1702 is 60 mA. The equation to determine the
minimum power dissipation of the transistor is as follows:
The digital voltage of the ADAU1702 must be set to 1.8 V. The
chip includes an on-board voltage regulator that allows the
device to be used in systems without an available 1.8 V supply
but with an available 3.3 V supply. The only external components
needed in such instances are a PNP transistor, a resistor, and a
few bypass capacitors. Only one pin, VDRIVE, is necessary to
support the regulator.
(3.3 V 1.8 V) × 60 mA = 90 mW
There are many transistors with these specifications available in
small SOT-23 or SOT-223 packages.
The recommended design for the voltage regulator is shown
in Figure 16. The 10 μF and 100 nF capacitors shown in this
configuration are recommended for bypassing, but are not
necessary for operation. Each DVDD pin should have its own
100 nF bypass capacitor, but only one bulk capacitor (10 μF to
47 μF) is needed for both DVDD pins. With this configuration,
3.3 V is the main system voltage; 1.8 V is generated at the
transistor’s collector, which is connected to the DVDD pins.
VDRIVE is connected to the base of the PNP transistor. If the
regulator is not used in the design, VDRIVE can be tied to ground.
3.3V
1k
VDRIVE
DVDD
10F
100nF
ADAU1702
+
05
79
8-
01
6
Figure 16. Voltage Regulator Configuration
相關(guān)PDF資料
PDF描述
CS8406-CSZ IC XMITTER DGTL 192KHZ 28SOIC
14281-18PG-3ES CONN RCPT 18POS PNL MNT PIN
AD7708BRU IC ADC 16BIT R-R 8/10CH 28-TSSOP
MS3106F20-29PW CONN PLUG 17POS STRAIGHT W/PINS
MS3106F20-29P CONN PLUG 17POS STRAIGHT W/PINS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADAU1702JSTZ-RL 功能描述:IC AUDIO PROC 2ADC/4DAC 48-LQFP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:SigmaDSP® 其它有關(guān)文件:STA321 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應(yīng)用:數(shù)字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:64-LQFP EP(10x10) 包裝:Digi-Reel® 其它名稱:497-11050-6
ADAU1761 制造商:AD 制造商全稱:Analog Devices 功能描述:SigmaDSP Stereo, Low Power, 96 kHz, 24-Bit Audio Codec with Integrated PLL
ADAU1761BCPZ 功能描述:IC SIGMADSP CODEC PLL 32LFCSP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:SigmaDSP® 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:PCM 數(shù)據(jù)接口:PCM 音頻接口 分辨率(位):15 b ADC / DAC 數(shù)量:1 / 1 三角積分調(diào)變:是 S/N 比,標(biāo)準(zhǔn) ADC / DAC (db):- 動(dòng)態(tài)范圍,標(biāo)準(zhǔn) ADC / DAC (db):- 電壓 - 電源,模擬:2.7 V ~ 3.3 V 電壓 - 電源,數(shù)字:2.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:80-VFBGA 供應(yīng)商設(shè)備封裝:80-BGA MICROSTAR JUNIOR(5x5) 包裝:帶卷 (TR) 其它名稱:296-21257-2
ADAU1761BCPZ 制造商:Analog Devices 功能描述:IC, AUDIO CODEC, 24BIT, 96KHZ, LFCSP-32
ADAU1761BCPZ-R7 功能描述:IC SIGMADSP CODEC PLL 32LFCSP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:SigmaDSP® 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:立體聲音頻 數(shù)據(jù)接口:串行 分辨率(位):18 b ADC / DAC 數(shù)量:2 / 2 三角積分調(diào)變:是 S/N 比,標(biāo)準(zhǔn) ADC / DAC (db):81.5 / 88 動(dòng)態(tài)范圍,標(biāo)準(zhǔn) ADC / DAC (db):82 / 87.5 電壓 - 電源,模擬:2.6 V ~ 3.3 V 電壓 - 電源,數(shù)字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:48-TQFN-EP(7x7) 包裝:帶卷 (TR)