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BL1554--Quad SPDT Analog Switch
Low Voltage 0.4Ω Quad SPDT Analog Switch
Description
Features
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Wide Power Supply Range:1.6V to 4.2V
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Low On-Resistance: 0.4Ω (VDD=2.7V)
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Low On-Resistance Flatness
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-3dB BandWidth: 42 MHz
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Fast Switching Speed(VDD=3.3V):
The BL1554 is a quad single-pole double-throw
(SPDT) CMOS switch featuring an On-Resistance of
0.4 ohm at VDD=2.7V and wide power supply range
from 1.6V to 4.2V. It can be used as an analog switch
or low-delay bus switch.
tON: 20ns
Block Diagram
tOFF: 10ns
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IDD = 300nA @ TA = +25°C
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High Off Isolation: -65dB
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Crosstalk Rejection: -65dB
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Lead(Pb) Free QFN-16 Package(3mmx3mm)
Applications
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Wireless Handsets
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Portable electronic devices
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PDAs
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Audio & Video Switching
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PCMCIA Cards
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Computer Peripherals
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Modems
Pin Configuration
COM1
16
Function Table
NO1
VDD
NC4
15
14
13
1
A0
12
A1
BL
1554
SSSSS
2
3
NC2
7
GND
NO3
Top View
0
NC1(NC2) connect to COM1 (COM2)
1
NO1(NO2) connect to COM1 (COM2)
0
NC3(NC4) connect to COM3 (COM4)
1
NO3(NO4) connect to COM3 (COM4)
Pin Description
10
9
6
Function
11
4
5
In
8
COM3
Pin Name
Type
Description
VDD
PWR
Power Supply
GND
Ground
Ground
COMx
Input/Output
Data Port
NCx
Input/Output
Data Port
NOx
Input/Output
Data Port
Ay
Input
Logic Control Signal
x = 1, 2, 3 or 4; y = 0 or 1
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Total 6 Pages
BL1554--Quad SPDT Analog Switch
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Min
Max
Units
DC Supply Voltage
VDD
1.5
4.6
V
Signals on NC
VNCX
-0.5
VSUP + 0.3
V
Signals on NO
VNOX
-0.5
VSUP + 0.3
V
Signals On COM
VCOM
-0.5
VSUP + 0.3
V
Peak Current(1)（VNC+VNO）
IPEAK
-500
+500
mA
Notes:
(1): Pulsed at 1ms, 10% duty circle
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Conditions
VDD
Guaranteed Limit
Min. Typ.(1) Max.
Unit
DC ELECTRICAL CHARACTERISTICS (Analog Section)
Input Signal Range(2)
VAN
On Resistance(2)
RON
On Resistance Flatness(2, 3)
On Resistance Match Between
Channels
(2, 4)
NC or NO Off Leakage Current
COM On Leakage Current
RFLAT
△RON
INC(OFF) or
INO(OFF)
ICOM(ON)
0
VDD
4.0
0.4
0.6
2.7
0.4
0.6
ICOM =100mA ; VIN = 0.8V to
4.0
0.08
0.12
2.0V
2.7
0.08
0.12
4.0
0.08
0.09
2.7
0.08
0.09
ICOM =100mA ; VIN = 1.5V
ICOM =100mA ; VIN = 1.5V
4.2
-500
500
3.6
-400
400
4.2
-500
500
3.6
-400
400
Minimum High Level Input
4.2
1.6
Voltage
3.3
1.3
Maximum Low Level Input
4.2
0.7
Voltage
3.3
0.5
VNO or VNC = 0.3V, 3.3V
VCOMX = 0.3V, 3.3V
V
Ω
Ω
Ω
nA
nA
DC ELECTRICAL CHARACTERISTICS (Digital Section)
Input High Voltage
VIH
Input Low Voltage
VIL
Input Current (High Level)
IAH
VA = 1.4V，Others = 0.5V
Input Current (Low Level)
IAL
VA = 0.5V，Others = 1.4V
V
4.2
-1
1
3.3
-1
1
4.2
-1
1
3.3
-1
1
Note:
(1). Typical characteristics are at 25°C
(2). Guaranteed by design. Resistance measurement do not include test circuit or package resistance
(3). Flatness is defined as the difference between the maximum and minimum value of on resistance as
measured over the specified analog signal ranges.
(4). △RON= RON(MAX) - RON(MIN) between channels
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Total 6 Pages
V
uA
uA
BL1554--Quad SPDT Analog Switch
ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Conditions
VDD
Guaranteed Limit
Min. Typ. (1) Max.
Unit
AC ELECTRICAL CHARACTERISTICS
4.2
20
25
3.3
20
25
4.2
10
15
3.3
10
15
4.2
13
16
3.3
13
16
4.2
50
3.3
50
4.2
135
3.3
135
VIN Centered Between VDD and
4.2
42
GND
3.3
42
4.2
100
3.3
100
4.2
-65
3.3
-65
4.2
-65
3.3
-65
Turn On Time
tON
VCOM = 2V; RL = 50Ω; CL = 35pF
Turn Off Time
tOFF
VCOM = 2V; RL = 50Ω; CL = 35pF
Break Before Make Time
tBBM
VIN = 1.5V; RL = 50Ω; CL = 35pF
NC/NO OFF Capacitance
NC/NO ON Capacitance
CNC(OFF) or
CNO(OFF)
CNC(ON) or
CNO(ON)
f = 1MHz ,
f = 1MHz ,
ns
ns
ns
pF
pF
ADDITIONAL APPLICATION CHARACTERISTICS
3dB Bandwidth
f3dB
Charge Injection Select
Q
VGEN = 0V; RGEN = 0Ω; CL = 1nF
VISO
f = 100kHz; RL = 50Ω
VCT
f = 100kHz; RL = 50Ω
(2)
Input to Common I/O
Off Isolation(3)
Cross Talk Between Two
Switches
(4)
MHz
pC
dB
dB
Supply
Power Supply Range
VDD
Maximum Quiescent
Supply Current
IDD
1.5
VA = VDD or GND
4.2
4.4
V
1.5
uA
Note:
(1). Typical characteristics are at 25°C
(2). Guaranteed by design.
(3). Off Channel Isolation = 20log10 [(VNO\NC)/VCOM]
(4). Between any two switches
THERMAL INFORMATION
Continuous Power Dissipation
16-pin QFN (derate 7.1mW/ºC above +70ºC)... ..................... ..................... ..............................0.5W
Storage Temperature ............................ ..................... ..................... ................................–65ºC to +150ºC
Operating Temperature Range ........ ..................... ..................... ......................................–40ºC to +85ºC
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Total 6 Pages
BL1554--Quad SPDT Analog Switch
TEST SETUP CIRCUITS
Fig.1 AC Test Circuit & Waveforms
Fig.2 Break Before Make Time (tBBM)
Fig.3 Charge Injection Select Input to Common I/O (Q)
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Total 6 Pages
BL1554--Quad SPDT Analog Switch
TEST SETUP CIRCUITS
Fig.4 Off Isolation (VISO)
Fig.5 Cross Talk (VCT)
Fig.6 Channel Off Capacitance(CNX(OFF))
Fig.7 Channel On Capacitance(CNX(ON))
Fig.8 -3dB Bandwidth (f3dB)
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Total 6 Pages
BL1554--Quad SPDT Analog Switch
PACKAGE OUTLINE DIMENSIONS
16L QFN 3X3 mm
PIN 1 DOT
BY MARKING
A1
E
A1
A3
A
D
SIDE VIEW
TOP VIEW
D2
PIN #1 IDENTIFICATION
CHAMFER
COMMON DIMENSIONS (MM)
E2
PKG.
b
REF.
MIN.
NOM.
MAX.
A
0.70
0.75
0.80
A1
0.00
0.2 REF.
0.05
D
2.95
3.00
3.05
E
2.95
3.00
3.05
b
0.18
0.25
0.30
L
0.30
0.40
0.50
D2
1.55
1.70
1.80
E2
1.55
1.70
0.5 BSC
1.80
A3
L
e
BOTTOM VIEW
e
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W: VERY VERY THIN
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Total 6 Pages