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PDF STG3220 Data sheet ( Hoja de datos )
| Número de pieza | STG3220 | |
| Descripción | Low voltage high bandwidth dual SPDT switch | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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STG3220
Low voltage high bandwidth dual SPDT switch
Features
■ Ultra low power dissipation:
– ICC = 1 μA (max.) at TA = 85 °C
■ Low "ON" resistance:
– RON = 4.8 Ω (TA = 25 ºC) at VCC = 4.3 V
– RON = 5.9 Ω (TA = 25 ºC) at VCC = 3.0 V
■ Wide operating voltage range:
– VCC (opr) = 1.65 V to 4.3 V
■ 4.3 V tolerant and 1.8 V compatible threshold
on digital control input at VCC = 2.3 V to 3.0 V
■ Typical bandwidth (-3 dB) at 800 MHz on all
channels
■ USB (2.0) high speed (480 Mbps) signal
switching compliant
■ Integrated fail safe function
■ Interrupt function to indicate to the processor
that the device is in dedicated port charging
mode
■ Latch-up performance exceeds 500 mA per
JESD 78, Class II
■ ESD performance exceeds JESD22:
– Dn pins: 4000-V human body model
(A114-A)
– All other pins: 2000-V human body model
(A114-A)
Applications
■ Mobile phones
QFN10
(1.8 x 1.4 mm)
Description
The STG3220 is a high-speed CMOS low voltage
dual analog SPDT (single pole dual throw) switch
or 2:1 multiplexer/de-multiplexer switch fabricated
in silicon gate C2MOS technology. It is designed
to operate from 1.65 V to 4.3 V, making this
device ideal for portable applications.
The SEL input is provided to control the switch.
The switch nS1 is ON (connected to common
ports Dn) when the SEL input is held high and
OFF (high impedance state exists between the
two ports) when SEL is held low; the switch nS2 is
ON (it is connected to common port Dn) when the
SEL input is held low and OFF (high impedance
state exists between the two ports) when SEL is
held high. STG3220 has an integrated fail safe
function to withstand over-voltage condition when
the device is powered off.
The STG3220 also has an interrupt pin which
sends a signal to the processor when the device
is in dedicated port charging mode. Additional key
features are fast switching speed, break-before-
make-delay time and ultra low power
consumption. All inputs and outputs are equipped
with protection circuits against static discharge,
giving them ESD immunity and transient excess
voltage.
Table 1. Device summary
Order code
STG3220QTR
Package
QFN10 (1.8 x 1.4 mm)
Packaging
Tape and reel
May 2009
Doc ID 15647 Rev 1
1/23
www.st.com
23
1 page  
www.DatSaTSGhe3e2t240U.com
Dedicated port charging detection
3 Dedicated port charging detection
The STG3220 has a built-in dedicated port charging detection circuit to detect the condition
when the USB D+/D- lines are both in high state. When this occurs, the device sends an
interrupt signal to the processor to indicate that the connected USB device is in dedicated
port charging mode.
Figure 4. Interrupt function logic representation
INT
D1 1S1
1S2
D2 2S1
2S2
SEL
Doc ID 15647 Rev 1
5/23
5 Page 
www.DatSaTSGhe3e2t240U.com
Electrical characteristics
Table 9. USB related AC electrical characteristics
Symbol Parameter
Value
VCC Test
(V) conditions
TA = 25 °C
-40 to 85 °C Unit
Min Typ Max Min Max
tSK(0)
Channel-to-
channel skew
3.0 - 3.6 CL = 10 pF
– 26 –
– – ps
tSK(P)
Skew of
opposite
transition of the
same output
3.0 - 3.6 CL = 10 pF
– 60 –
– – ps
TJ Total jitter
3.0 - 3.6
RL = 50 Ω
CL = 10 pF
tR = tF =
750 ps
– 130 –
– – ps
at 480 Mbps
Doc ID 15647 Rev 1
11/23
11 Page | ||
| Páginas | Total 23 Páginas | |
| PDF Descargar | [ Datasheet STG3220.PDF ] | |
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