参数资料
型号: TAS5709APHP
厂商: TEXAS INSTRUMENTS INC
元件分类: 音频/视频放大
英文描述: 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48
封装: 7 X 7 MM, GREEN, PLASTIC, HTQFP-48
文件页数: 24/60页
文件大小: 1210K
代理商: TAS5709APHP
(1or0)
2 +
1
(1or0)
2 +(1or0)
2
+.......(1or0)
2
+.......(1or0)
2
0
–1
–4
–23
2 Bit
1
2 Bit
0
2
Bit
–1
2
Bit
–4
2
Bit
–23
M0126-01
u
Coefficient
Digit8
u u u
u u S x
Coefficient
Digit7
x.
x
Coefficient
Digit6
x
Coefficient
Digit5
x
Coefficient
Digit4
x
Coefficient
Digit3
x
Coefficient
Digit2
x
Coefficient
Digit1
Fraction
Digit5
Fraction
Digit4
Fraction
Digit3
Fraction
Digit2
Fraction
Digit1
Integer
Digit1
Sign
Bit
Fraction
Digit6
u=unusedordon’tcarebits
Digit=hexadecimaldigit
M0127-01
0
SLOS599A – NOVEMBER 2008 – REVISED SEPTEMBER 2009 ..................................................................................................................................... www.ti.com
The decimal value of a 3.23 format number can be found by following the weighting shown in Figure 33. If the
most significant bit is logic 0, the number is a positive number, and the weighting shown yields the correct
number. If the most significant bit is a logic 1, then the number is a negative number. In this case every bit must
be inverted, a 1 added to the result, and then the weighting shown in Figure 34 applied to obtain the magnitude
of the negative number.
Figure 34. Conversion Weighting Factors—3.23 Format to Floating Point
Gain coefficients, entered via the I2C bus, must be entered as 32-bit binary numbers. The format of the 32-bit
number (4-byte or 8-digit hexadecimal number) is shown in Figure 35
Figure 35. Alignment of 3.23 Coefficient in 32-Bit I2C Word
Sample calculation for 3.23 format
db
Linear
Decimal
Hex (3.23 Format)
0
1
8388608
800000
5
1.77
14917288
00E39EA8
-5
0.56
4717260
0047FACC
X
L = 10(X/20)
D = 8388608 × L
H = dec2hex (D, 8)
Sample calculation for 9.17 format
db
Linear
Decimal
Hex (9.17 Format)
0
1
131072
20000
5
1.77
231997
38A3D
-5
0.56
73400
11EB8
X
L = 10(X/20)
D = 131072 × L
H = dec2hex (D, 8)
30
Copyright 2008–2009, Texas Instruments Incorporated
Product Folder Link(s): TAS5709 TAS5709A
相关PDF资料
PDF描述
TAS5709PHPG4 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48
TAS5709PHPRG4 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48
TAS5709PHPR 20.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQFP48
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相关代理商/技术参数
参数描述
TAS5709APHPR 功能描述:音频放大器 20W Stereo I2S Aud Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel
TAS5709EVM 功能描述:音频 IC 开发工具 TAS5709EVM Eval Mod RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V
TAS5709PHP 功能描述:音频放大器 20W Stereo I2S input Aud Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel
TAS5709PHPG4 功能描述:音频放大器 20W Stereo I2S input Aud Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel
TAS5709PHPR 功能描述:音频放大器 20W Stereo I2S input Aud Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel