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MAX9890 PDF预览

MAX9890

更新时间: 2024-11-24 22:55:07
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美信 - MAXIM /
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13页 491K
描述
Audio Click-Pop Suppressor

MAX9890 数据手册

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19-2932; Rev 0; 8/03  
Audio Click-Pop Suppressor  
General Description  
Features  
The MAX9890 provides click-and-pop suppression for  
devices such as CODECs with integrated headphone  
amplifiers that lack a clickless/popless startup/power-  
up or shutdown/power-down. The device controls the  
ramping of the DC bias voltage on the output-coupling  
capacitors and the application of the audio signal to  
ensure that no audible transients are present at the  
headphones. The MAX9890A features a 200ms startup  
time for use with up to 100µF coupling capacitors. The  
MAX9890B features a 330ms startup time for use with  
greater than 100µF coupling capacitors.  
36dB Click-Pop Suppression  
2.7V to 5.5V Single-Supply Operation  
Clickless/Popless Startup/Power-Up and  
Shutdown/Power-Down  
0.001µA Low-Power Shutdown Mode  
THD+N < 0.003% Into 32  
±±kV ꢀSD Protection ꢁHuꢂan Body Modelꢃ  
Requires Only One 0.1µF Capacitor to Coꢂplete  
the Circuit  
The MAX9890 consumes 14µA of supply current and  
0.001µA in shutdown, while contributing less than  
0.003% THD+N into a 32load. ESD (Human Body  
Model) protection circuitry on the outputs protect the  
MAX9890 and devices further up the signal chain from  
ESD strikes up to 8kꢀ.  
Low 14µA Supply Current  
Tiny Packaging  
9-Buꢂp UCSP ꢁ1.5ꢂꢂ x 1.5ꢂꢂ x 0.6ꢂꢂꢃ  
±-Pin TDFN ꢁ3ꢂꢂ x 3ꢂꢂ x 0.±ꢂꢂꢃ  
The MAX9890 is available in a miniature (1.5mm  
1.5mm 0.6mm) 9-bump chip-scale package (UCSP™),  
as well as an 8-pin TDFN package (3mm 3mm ✕  
0.8mm), and is specified for operation over the  
-40°C to +85°C extended temperature range.  
Ordering Information  
PIN-  
PACKAGꢀ  
TOP  
MARK  
PART  
TꢀMP RANGꢀ  
MAX9890AEBL-T* -40°C to +85°C 9 UCSP-9  
MAX9890AETA -40°C to +85°C 8 TDFN-EP**  
MAX9890BEBL-T* -40°C to +85°C 9 UCSP-9  
MAX9890BETA -40°C to +85°C 8 TDFN-EP**  
ADV  
AHA  
ADW  
AHB  
Applications  
High-End Notebook Audio  
Portable DꢀD Players  
Portable MP3 Players  
PDAs  
Cell Phones  
*Future product—contact factory for availability.  
**EP = Exposed pad.  
Simplified Block Diagram  
Selector Guide  
SWITCH TURN-ON  
PART  
PIN-PACKAGꢀ  
SINGLE SUPPLY  
2.7V TO 5.5V  
TIMꢀ ꢁꢂsꢃ  
MAX9890AEBL-T  
MAX9890AETA  
MAX9890BEBL-T  
MAX9890BETA  
9 UCSP-9  
8 TDFN-EP  
9 UCSP-9  
8 TDFN-EP  
200  
200  
330  
330  
OUTL  
INL  
RAMP  
UP  
RAMP  
DOWN  
INR  
OUTR  
MAX9890  
Typical Application Circuit and Pin Configurations appear  
at end of data sheet.  
UCSP is a trademark of Maxim Integrated Products, Inc.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  

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