參數(shù)資料
型號: SSM2603CPZ-R2
廠商: Analog Devices Inc
文件頁數(shù): 4/32頁
文件大小: 0K
描述: IC CODEC AUDIO LOW POWER 28LFCSP
產(chǎn)品變化通告: SSM260x Discontinuation 05/Apr/2012
標(biāo)準(zhǔn)包裝: 1
類型: 立體聲音頻
分辨率(位): 24 b
ADC / DAC 數(shù)量: 2 / 2
三角積分調(diào)變:
S/N 比,標(biāo)準(zhǔn) ADC / DAC (db): 90 / 100
電壓 - 電源,模擬: 1.8 V ~ 3.6 V
電壓 - 電源,數(shù)字: 1.5 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 28-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 28-LFCSP-VQ
包裝: 標(biāo)準(zhǔn)包裝
其它名稱: SSM2603CPZ-R2DKR
SSM2603
Data Sheet
Rev. C | Page 12 of 32
AUTOMATIC LEVEL CONTROL (ALC)
The SSM2603 codec has an automatic level control (ALC) that
can be activated to suppress clipping and improve dynamic
range even if a sudden, loud input signal is introduced. This is
achieved by continuously adjusting the PGA gain so that the
signal level at the ADC input remains constant.
Decay (Gain Ramp-Up) Time
Decay time is the time taken for the PGA gain to ramp up to
90% of its range. The time for the recording level to return to its
target value, therefore, depends on both the decay time and the
gain adjustment required. If the gain adjustment is small, the
time to return to the target value will be less than the decay time.
Attack (Gain Ramp-Down) Time
Attack time is the time taken for the PGA gain to ramp down
through 90% of its range. The time for the recording level to
return to its target value, therefore, depends on both the attack
time and the gain adjustment required. If the gain adjustment is
small, the time to return to the target value will be less than the
attack time.
Noise Gate
When the ALC function is enabled but the input signal is silent
for long periods, an audible hissing sound may be introduced by a
phenomenon called noise pumping. To prevent this occurrence, the
SSM2603 employs a noise gate function. A user-selected threshold
can be set by using the NGTH bits (Register R18, Bit D3 to Bit D7).
When the noise gate is enabled, the ADC output is either muted or
held at a constant gain to prevent the noise-pumping phenomenon.
For more information about the noise gate settings, see Table 41.
Figure 18. PGA and ALC Decay Time and Attack Time Definitions
07241-
021
INPUT SIGNAL
PGA
SIGNAL
AFTER
ALC
DECAY TIME
ALC TARGET
VALUE
ATTACK TIME
相關(guān)PDF資料
PDF描述
SSM2604CPZ-REEL IC AUDIO CODEC LP 20-LFCSP
SY100E195JY TR IC DELAY LINE 128TAP 28-PLCC
SY100EP195VTI TR IC DELAY LINE 1024TAP 32-TQFP
SY100EP196VTI TR IC DELAY LINE 1024TAP 32-TQFP
SY10E196JZ TR IC DELAY LINE 7TAP 28-PLCC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SSM2603CPZ-REEL 功能描述:IC CODEC AUDIO LOW POWER 28LFCSP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 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 供應(yīng)商設(shè)備封裝:48-TQFN-EP(7x7) 包裝:帶卷 (TR)
SSM2603CPZ-REEL7 功能描述:IC CODEC AUDIO LOW POWER 28LFCSP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 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 供應(yīng)商設(shè)備封裝:48-TQFN-EP(7x7) 包裝:帶卷 (TR)
SSM2603-EVALZ 功能描述:BOARD EVALUATION FOR SSM2603 RoHS:是 類別:編程器,開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 主要目的:電信,線路接口單元(LIU) 嵌入式:- 已用 IC / 零件:IDT82V2081 主要屬性:T1/J1/E1 LIU 次要屬性:- 已供物品:板,電源,線纜,CD 其它名稱:82EBV2081
SSM2603GY 制造商:SSC 制造商全稱:Silicon Standard Corp. 功能描述:P-CHANNEL ENHANCEMENT MODE POWER MOSFET
SSM2604 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Power Audio Codec