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NLAS7222AMUTAG

P1-P3P4-P6P7-P9P10-P11
NLAS7222A
http://onsemi.com
4
Figure 2. t
BBM
(Time Break−Before−Make)
Output
DUT
50
35 pF
V
CC
Switch Select Pin
Output
Input
V
CC
GND
Figure 3. t
ON
/t
OFF
50% 50%
90% 90%
t
ON
t
OFF
V
OH
Output
Input
V
CC
0 V
Figure 4. t
ON
/t
OFF
DUT
Open
35 pF
V
CC
Input
50% 50%
10%
t
ON
t
OFF
Output
Input
V
CC
0 V
10%
50
0.1 F
t
BMM
Output
V
OUT
V
OL
V
OUT
V
OH
V
OL
DUT
Open
V
CC
Input
Output
50
35 pF
V
OUT
0.1 F
50 % OF
DROOP
VOLTAGE
DROOP
NLAS7222A
http://onsemi.com
5
Channel switch control/s test socket is normalized. Off isolation is measured across an off channel. On loss
is the bandwidth of an On switch. V
ISO
, Bandwidth and V
ONL
are independent of the input signal direction.
V
ISO
= Off Channel Isolation = 20 Log for V
IN
at 100 kHz
V
ONL
= On Channel Loss = 20 Log for V
IN
at 100 kHz to 50 MHz
Bandwidth (BW) = the frequency 3 dB below V
ONL
V
CT
= Use V
ISO
setup and test to all other switch analog input/outputs terminated with 50
Output
DUT
Input
50
50 Generator
Reference
Transmitted
Figure 5. Off Channel Isolation/On Channel Loss (BW)/Crosstalk
(On Channel to Off Channel)/V
ONL
50
ǒ
V
OUT
V
IN
Ǔ
ǒ
V
OUT
V
IN
Ǔ
Off
On
Off
V
OUT
V
CC
GND
Output
V
IN
C
L
DUT
Figure 6. Charge Injection: (Q)
V
IN
Open
Output
NLAS7222A
http://onsemi.com
6
APPLICATIONS INFORMATION
The low on resistance and capacitance of the
NLAS7222A provides for a high bandwidth analog switch
suitable for applications such as USB data switching.
Results for the USB 2.0 signal quality tests will be shown in
this section, along with a description of the evaluation test
board. The data for the eye diagram signal quality and jitter
tests verifies that the NLAS7222A can be used as a data
switch in low, full and high speed USB 2.0 systems.
Figures 7, 8 and 9 provide a description of the test
evaluation board. The USB tests were conducted per the
procedures provided by the USB Implementers Forum
(www.usb.org
), the industry group responsible for defining
the USB certification requirements. The test patterns were
generated by a PC and MATLAB software, and were
inputted to the analog switch through USB connectors J1
(HSD1) or J2 (HSD2). A USB certified device was plugged
into connector J4 to function as a data transceiver. The high
speed and full speed tests used a flash memory device, while
the low speed tests used a mouse. Test connectors J3 and J5
provide a direct connection of the USB device and were used
to verify that the analog switch does not distort the data
signals.
Figure 7. Schematic of the NLAS7222A USB Demo Board
P1-P3P4-P6P7-P9P10-P11

NLAS7222AMUTAG

Mfr. #:
Buy NLAS7222AMUTAG
Manufacturer:
ON Semiconductor
Description:
USB Switch ICs USB 2.0 ANALOG SWITCH DPDT
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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