Document
NEW PRODUCT
AZV5002
Low Power Audio Jack Detector with SEND/END Detection in Miniaturized Package
Description
The AZV5002 is a low power and cost effective headset detection IC with a comparator with internal hysteresis, OR gate, and N-channel MOSFET integrated designed to detect the assertion of a headset with a microphone.
Pull−up resistors for the detection pins are internalized, a built in resistor divider provides the reference voltage for detecting the left audio channel. The logic low output of the OR gate indicates the headset has been connected properly.
The AZV5002 is available in miniaturized package, U-QFN1418-10 which helps reduce the space needed on PCB boards.
Features
Low Supply Current: 5µA (Typical) @ VDD = 1.8V Supply Voltage Range: 1.6~5.5V Comparator, OR Gate, N-Channel MOSFET Integrated Open Drain Output for MIC Pin U-QFN1418-10: Available in “Green” Molding Compound (No Br.
Sb.) Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device(Note 3)
Pin Assignments
AZV5002
S/E DET
S/E_DET 8
7
6 5
S/E_REF 9
4
VDD2 10
1 GND
2 MIC
3
Top View (U-QFN1418-10)
Fig. 1
GND_DET L_DET VDD
Applications
Mobile Phones Tablet Battery Powered Devices Alarm and Security Systems
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
AZV5002
Document number: DS38465 Rev. 1 - 2
1 of 15 www.diodes.com
March 2016
© Diodes Incorporated
NEW PRODUCT
Typical Applications Circuit
VDD2
S/E_REF
AZV5002
S/E_DET
VDD2
VDD
VDD
270K 1M
VDD 1M
VDD VDD
L_DET
GND
GND_DET
S/E MIC
DET
AZV5002
GPIO_B
Baseband
GPIO_A
2.2K
MIC_Bias
MIC
Audio Codec
MIC_IN
L_CH R_CH
Send M G R L /End
Note: L: Left Channel R: Right Channel G: Ground M: Microphone
Output Logic
L_DET 0 0 1 1
Inputs GND_DET 0 1 0 1
Fig. 2
DET 0 1 1 1
Outputs MIC
1 (External Pull-Up) 0 0 0
Headset
Detected Not Detected Not Detected Not Detected
AZV5002
Document number: DS38465 Rev. 1 - 2
2 of 15 www.diodes.com
March 2016
© Diodes Incorporated
NEW PRODUCT
AZV5002
Pin Descriptions
Pin Name GND
Pin Number
1
MIC 2
VDD
L_DET
GND_DET DET S/E
S/E_DET S/E_REF
VDD2
3
4
5 6 7 8 9 10
Type Power
Output
Power
Input
Input Output Output Input Input Power
AZV5002
Function
Connects to system ground. MIC output pin with open drain output type. When the headset is asserted, then MIC is pulled up to the MIC bias voltage with a pull-up resistor. When the headset is not asserted, then MIC is pulled low.
System power supply. A bypass capacitor of 0.1F is recommended as close as possible to the pin.
Left channel detection pin. Connect to audio jack L_DET, this pin is pulled low when the headset is present. Ground pin detection pin. Connect to audio jack GND_DET, this pin is pulled low when the headset is present. DET is a logic output that indicates whether the headset has been properly inserted. S/E is an output port indicates SEND/END button condition. When SEND/END button press is detected, S/E output is at low level. Non-inverting input of the comparator detects whether the SEND/END button has been pressed. Inverting input of the comparator to set a voltage reference with an external resistor divider. System power supply for the S/E detection comparator. A bypass capacitor of 0.1F is recommended as close as possible to the pin.
Functional Block Diagram
AZV5002
S/E_REF
S/E_DET VDD2
VDD
VDD
270K 1M
VDD 1M
VDD
VDD 1M
L_DET
GND GND_DET Fig.3
S/E MIC
DET
AZV5002
Document number: DS38465 Rev. 1 - 2
3 of 15 www.diodes.com
March 2016
© Diodes Incorporated
NEW PRODUCT
Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.)
Symbol
Parameter
VDD VDD2
VIN
Supply Voltage Input Pin Voltage Range (L_DET, GND_DET)
VIN I Input Pin Voltage Range (S/E_REF, S/E_DET)
VMIC IMIC TJ TSTG
ESD
MIC Output Pin Voltage Range Max Current on MIC Pin Junction Temperature Storage Temperature HBM MM
ILATCH-UP
Latch-Up Current (Note 4)
Note 4: Latch-up test at VDD/VDD2 = 3V condition.
AZV5002
Min Max
06
-0.1 VDD+0.1 -0.1 VDD2+0.1
06 -2 -40 +150 -65 +150
8000 200 800
Unit
V
V V V mA °C °C V V mA
Recommended Operating Ratings (@TA = +25°C, unless otherwise specified.)
Symbol VDD VDD2
VIN
VMIC_BIAS TA TJ
Parameter Power Supply Voltage
Input Voltage MIC Bias Voltage Ambient Temperature Junction Temperature
Condition Headset Detection Circuit S/E Detection Comparator L_DET, GND_DET S/E_DET, S/E_REF -
Min 1.6 1.6 0 0 0 -40 -40
Max 5.5 5.5 VDD VDD2 5.5
+85 +125
Unit V V V V V °C °C
AZV5002
Document number: DS38465 Rev. 1 - 2
4 of 15 www.diodes.com
March 2016
© Diodes Incor.