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參數(shù)資料
| 型號(hào)： | SA571DR2 |
| 廠商： | ON Semiconductor |
| 文件頁(yè)數(shù)： | 11/11頁(yè) |
| 文件大小： | 0K |
| 描述： | IC COMPANDOR DUAL GAIN 16-SOIC |
| 產(chǎn)品變化通告： | Product Obsolescence 11/Feb/2009 |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 類(lèi)型： | 壓縮擴(kuò)展器 |
| 應(yīng)用： | 蜂窩式無(wú)線電，播放器 |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SOIC W |
| 包裝： | 帶卷 (TR) |
SA571
http://onsemi.com
9
Figure 15 shows the noise performance of the
DG cell.
The maximum output level before clipping occurs in the
gain cell is plotted along with the output noise in a 20 kHz
bandwidth. Note that the noise drops as the gain is reduced
for the first 20 dB of gain reduction. At high gains, the signal
to noise ratio is 90 dB, and the total dynamic range from
maximum signal to minimum noise is 110 dB.
VCA GAIN (0dB)
+20
OUTPUT
(dBm)
0
20
40
60
80
100
40
20
0
MAXIMUM
SIGNAL LEVEL
NOISE IN
20kHz BW
90dB
110dB
Figure 15. Dynamic Range
Control signal feedthrough is generated in the gain cell by
imperfect device matching and mismatches in the current
sources, I1 and I2. When no input signal is present, changing
IG will cause a small output signal. The distortion trim is
effective in nulling out any control signal feedthrough, but
in general, the null for minimum feedthrough will be
different than the null in distortion. The control signal
feedthrough can be trimmed independently of distortion by
tying a current source to the
DG input pin. This effectively
Figure 16. Control Signal Feedthrough
RSELECT FOR
3.6V
470k
W
TO PIN 3 OR 14
100k
W
VCC
Operation Amplifier
The main op amp shown in the chip block diagram is
equivalent to a 741 with a 1.0 MHz bandwidth. Figure 17
shows the basic circuit. Split collectors are used in the input
pair to reduce gM, so that a small compensation capacitor of
just 10 pF may be used. The output stage, although capable
of output currents in excess of 20 mA, is biased for a low
quiescent current to conserve power. When driving heavy
loads, this leads to a small amount of crossover distortion.
Q1
Q2
Q4
Q3
I1
I2
Q6
D1
D2
Q2
CC
+IN
IN
OUT
Figure 17. Operational Amplifier
ORDERING INFORMATION
Device
Description
Temperature Range
Shipping
SA571D
16Pin Plastic Small Outline (SO16 WB) Package
40 to +85
°C
47 Units / Rail
SA571DG
16Pin Plastic Small Outline (SO16 WB) Package
(PbFree)
40 to +85
°C
47 Units / Rail
SA571DR2
16Pin Plastic Small Outline (SO16 WB) Package
40 to +85
°C
1000 / Tape & Reel
SA571DR2G
16Pin Plastic Small Outline (SO16 WB) Package
(PbFree)
40 to +85
°C
1000 / Tape & Reel
SA571N
16Pin Plastic Dual InLine Package (PDIP16)
40 to +85
°C
25 Units / Rail
SA571NG
16Pin Plastic Dual InLine Package (PDIP16)
(PbFree)
40 to +85
°C
25 Units / Rail
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA571DR2G | 功能描述:音頻放大器 Dual Gain Compandor Industrial Temp RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| SA571E-2200 | 制造商:Elan 功能描述:TOUCH PAD |
| SA571FB | 制造商:SIGNET 功能描述: |
| SA571N | 功能描述:音頻放大器 Dual Gain Compandor RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| SA571N,602 | 制造商:NXP Semiconductors 功能描述: |
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