数据搜索系统,热门电子元器件搜索
  Chinese▼

Delete All
ON OFF
ALLDATASHEETCN.COM

X  

预览 PDF Download HTML

DRV600RTJR Datasheet(数据表) 8 Page - Texas Instruments

Click here to check the latest version.
部件型号  DRV600RTJR
说明  DIRECTPATH™ STEREO LINE DRIVER
下载  16 Pages
Scroll/Zoom Zoom In 100% Zoom Out
制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 

DRV600RTJR Datasheet(HTML) 8 Page - Texas Instruments

Zoom Inzoom in Zoom Outzoom out
 8 page
background image
www.ti.com
Charge Pump Flying Capacitor and PVSS Capacitor
0.001
100
0.01
0.1
1
10
3m
3
10m
100m
500m 1
2
V -OutputVoltage-Vrms
O
V
=3.3V,
R =600k ,
f
=1kHz,
1 FChargePumpCapacitor
DD
L
IN
W
m
Decoupling Capacitors
Supply Voltage Limiting At 4.5 V
Layout Recommendations
Exposed Pad On DRV600RTJ Package
SGND and PGND Connections
DRV600
SLOS536 – JUNE 2007
APPLICATION INFORMATION (continued)
The charge pump flying capacitor serves to transfer charge during the generation of the negative supply voltage.
The PVSS capacitor must be at least equal to the charge pump capacitor in order to allow maximum charge
transfer. Low ESR capacitors are an ideal selection, and a value of 2.2 µF is typical. Capacitor values that are
smaller than 2.2 µF can be used, but the maximum output power is reduced and the device may not operate to
specifications.
TOTAL HARMONIC DISTORTION + NOISE
vs
OUTPUT VOLTAGE
Figure 14.
The DRV600 is a DirectPath™ Line Driver amplifier that require adequate power supply decoupling to ensure
that the noise and total harmonic distortion (THD) are low. A good low equivalent-series-resistance (ESR)
ceramic capacitor, typically 2.2 µF, placed as close as possible to the device VDD lead works best. Placing this
decoupling capacitor close to the DRV600 is important for the performance of the amplifier. For filtering lower
frequency noise signals, a 10-µF or greater capacitor placed near the audio power amplifier would also help, but
it is not required in most applications because of the high PSRR of this device.
The DRV600 have a built-in charge pump which serves to generate a negative rail for the line driver. Because
the line driver operates from a positive voltage and negative voltage supply, circuitry has been implemented to
protect the devices in the amplifier from an overvoltage condition. Once the supply is above 4.5 V, the DRV600
can shut down in an overvoltage protection mode to prevent damage to the device. The DRV600 resume normal
operation once the supply is reduced to 4.5 V or lower.
The exposed metal pad on the DRV600RTJ package must be soldered down to a pad on the PCB in order to
maintain reliability. The pad on the PCB should be allowed to float and not be connected to ground or power.
Connecting this pad to power or ground prevents the device from working properly because it is connected
internally to PVSS.
The SGND and PGND pins of the DRV600 must be routed separately back to the decoupling capacitor in order
to provide proper device operation. If the SGND and PGND pins are connected directly to each other, the part
functions without risk of failure, but the noise and THD performance do not meet the specifications.
8




HTML 页

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16 


数据表 下载




链接网址


Privacy Policy
ALLDATASHEETCN.COM
ALLDATASHEET是否为您带来帮助?  [ DONATE ]  

关于 Alldatasheet    |   广告服务   |   联系我们   |   隐私政策   |   书签   |   链接交换   |   制造商名单
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl