PRELIMINARY DATASHEET
0.5 OHM, DUAL SPDT ANALOG SWITCH
Description
The IDTAS4684A low on-resistance (RON), low voltage,
dual single-pole/double-throw (SPDT) analog switch
operates from a single +1.8 V to +5.5 V supply. The
IDTAS4684A features a 0.5Ω (max) RON for its NC switch
and a 0.8Ω (max) RON for its NO switch at a +2.7 V supply.
It also features break-before-make switching action (2 ns)
with t
ON
= 50 ns and t
OFF
= 40 ns at +3 V. The digital logic
inputs are 1.8 V logic-compatible with a +2.7 V to +3.3 V
supply. Comes in a 12-bump CSP package.
IDTAS4684A
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
+1.8 V to +5.5 V single-supply operation
Rail-to-rail signal handling
1.8 V logic compatibility
R
ON
match between channels: 0.06Ω (max)
R
ON
flatness over signal range: 0.15Ω (max)
NCx Switch R
ON
: 0.5Ω max (+2.7 V Supply)
NOx Switch R
ON
: 0.8Ω max (+2.7 V Supply)
Low crosstalk: -68dB (100 kHz)
High Off-isolation: -64dB (100 kHz)
THD: 0.03%
50 nA (max) supply current
Low leakage currents: 1 nA (max) at T
A
= +25°C
12-bump, 0.5 mm-Pitch UCSP package
Applications
•
•
•
•
•
•
•
Speaker headset switching
MP3 players
Battery-operated equipment
Audio and video signal routing
PCMCIA cards
Cellular phones
Modems
Block Diagram
IDT™
0.5 OHM, DUAL SPDT ANALOG SWITCH
1
IDTAS4684A
REV A 092507
IDTAS4684A
0.5 OHM, DUAL SPDT ANALOG SWITCH
ANALOG SWITCH
Pin Assignment
(CSP)
A
1
2
3
4
B
C
Truth Table
IN
0
1
NO
OFF
ON
NC
ON
OFF
Note:
Switches shown for logic “0” input.
Pin Descriptions
Pin Numbers
A1
A2
A3
A4
B1
B2
B3
B4
C1
C2
C3
C4
Pin Name
NC1
IN1
COM1
NO1
GND
NC
NC
V+
NC2
IN2
COM2
NO2
Digital control input 1.
Pin Description
Analog switch. Normally closed terminal 1.
Analog switch. Common terminal 1.
Analog switch. Normally open terminal 1.
Ground.
No connect.
No connect.
Positive supply voltage input.
Analog switch. Normally closed terminal 2.
Digital control input 2.
Analog switch. Common terminal 2.
Analog switch. Normally open terminal 2.
IDT™
0.5 OHM, DUAL SPDT ANALOG SWITCH
2
IDTAS4684A
REV A 092507
IDTAS4684A
0.5 OHM, DUAL SPDT ANALOG SWITCH
ANALOG SWITCH
Absolute Maximum Ratings
Stresses above the ratings listed below can cause permanent damage to the IDTAS4684A. These ratings, which
are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the device at
these or any other conditions above those indicated in the operational sections of the specifications is not implied.
Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical
parameters are guaranteed only over the recommended operating temperature range. All voltages referenced to
ground.
Symbol
V+, IN
COM, NO, NC
Continuous current
NO, NC, COM
Rating
Min
-0.3
-0.3
Max
+6
(V+ + 0.3)
±300
±400
±500
+909
Unit
V
V
mA
mW
°C
°C
°C
°C
°C
Peak current (pulsed at 1ms, 50% duty cycle)
Peak current (pulsed at 1ms, 10% duty cycle)
Continuous power dissipation (TA = +70°C) and
12-bump UCSP (derate 11.4mW/°C above +70°C)
Operating temperature range
0
-65
+70
+150
+300
+200
+215
TSTG
Storage temperature range
Lead temperature (soldering, 10s)
Bump temperature (soldering, infrared, 15s)
Vapor phase (60s)
IDT™
0.5 OHM, DUAL SPDT ANALOG SWITCH
3
IDTAS4684A
REV A 092507
IDTAS4684A
0.5 OHM, DUAL SPDT ANALOG SWITCH
ANALOG SWITCH
Electrical Characteristics
Unless stated otherwise,
V+ = 2.7 V to 3.3 V, V
IH
= 1.4 V, V
IL
= 0.5 V, T
A
= T
MIN
to T
MAX
.
Typical values are at +3 V and 25°C
Parameter
Analog Signal Range
NC On-Resistance
NO On-Resistance
On-Resistance Match
between channels
NC On-Resistance Flatness
NO On-Resistance Flatness
NO or NC Off-leakage Current
COM On-leakage Current
Symbol
V
NO
, V
NC,
V
COM
R
ON(NC)
R
ON(NO)
R
ON
R
FLAT(NC)
R
FLAT(NO)
I
NO
(OFF) or
I
NC
(OFF)
I
COM
(ON)
Conditions
Analog Switch
T
A
T
MIN to
T
MAX
Min.
0
Typ.
Max. Units
V+
V
Ω
Ω
Ω
Ω
Ω
nA
nA
V+ = 2.7 V, I
COM
= 100 mA,
V
NC
= 0 to V+; Note 3
V+ = 2.7 V, I
COM
= 100 mA,
V
NO
= 0 to V+; Note 3
V+ = 2.7 V, I
COM
= 100 mA,
V
NO
or V
NC
= 1.5 V; Notes 3, 4
V+ = 2.7 V, I
COM
= 100 mA,
V
NC
= 0 to V+; Note 5
V+ = 2.7 V, I
COM
= 100 mA,
V
NO
= 0 to V+; Note 5
+25°C
T
MIN to
T
MAX
+25°C
T
MIN to
T
MAX
+25°C
T
MIN to
T
MAX
T
MIN to
T
MAX
T
MIN to
T
MAX
-1
-10
-2
-20
3.0
0.45
0
0.5
0.5
0.8
0.8
0.6
0.6
0.15
0.35
+1
+10
+2
+20
V+ = 3.3 V, V
NO
or V
NC
= 3 V, 0.3 V
+25°C
V
COM
= 0.3 V, 3 V
T
MIN to
T
MAX
V+ = 3.3 V, V
NO
or V
NC
= 3 V, 0.3
+25°C
V, or floating
T
MIN to
T
MAX
V
COM
= 0.3 V, 3 V, or floating
Dynamic Characteristics
Turn-on Time
Turn-off Time
Break-Before-Make-Delay
Charge Injection
Off-Isolation
Crosstalk
Total Harmonic Distortion
NC Off-Capacitance
NC Off-Capacitance
NC On-Capacitance
NC On-Capacitance
t
ON
t
OFF
t
BBM
Q
V
ISO
V
CT
THD
C
NC
(OFF)
C
NO
(OFF)
C
NC
(ON)
C
NO
(ON)
V+ = 2.7 V, V
NO
or V
NC
= 1.5 V, R
L
= 50Ω C
L
= 35 pF
,
V+ = 2.7 V, V
NO
or V
NC
= 1.5 V, R
L
= 50Ω C
L
= 35 pF
,
V+ = 2.7 V, V
NO
or V
NC
= 1.5 V,
R
L
= 50Ω C
L
= 35 pF
,
COM = 0, RS = 0, C
L
= 1 nF
C
L
= 5 pF; R
L
= 50Ω, f = 100 kHz,
V
COM
= 1 V
RMS
, Note 6
f = 100 kHz, R
L
= 50Ω C
L
= 5 pF,
,
V
COM
= 1 V
RMS
R
L
= 600Ω IN = 2 V p-p,
,
f = 20Hz to 20 kHz
f = 1 MHz
f = 1 MHz
f = 1 MHz
f = 1 MHz
+25°C
T
MIN to
T
MAX
+25°C
T
MIN to
T
MAX
T
MIN to
T
MAX
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
2
15
200
-64
-68
0.03
84
37
190
150
25
30
50
60
30
40
ns
ns
ns
ns
ns
pC
dB
dB
%
pF
pF
pF
pF
IDT™
0.5 OHM, DUAL SPDT ANALOG SWITCH
4
IDTAS4684A
REV A 092507
IDTAS4684A
0.5 OHM, DUAL SPDT ANALOG SWITCH
ANALOG SWITCH
Parameter
Input Logic HIGH
Input Logic LOW
IN Input Leakage Current
Symbol
V
IH
V
IL
I
IN
Conditions
Digital I/O
T
A
T
MIN to
T
MAX
T
MIN to
T
MAX
Min.
1.4
Typ.
Max. Units
V
0.5
V
µA
V
IN
= 0 or V+
T
MIN to
T
MAX
T
MIN to
T
MAX
-1
1
Power Supply
Power Supply Range
Supply Current
V+
I+
1.8
-50
-200
+0.04
5.5
+50
+200
V
nA
V+ = 5.5 V, V
IN
= 0 or V+,
Note 3
+25°C
T
MIN to
T
MAX
Notes:
1. The algebraic convention used in this data sheet is where the most negative value is a minimum and the most positive value
a maximum.
2. UCSP parts are 100% tested at +25°C only and guaranteed by design and correlation at the full hot-rated temperature.
3. Guaranteed by design.
4. R
ON
= R
ON(MAX)
- R
ON(MIN)
, between NC1 and NC2 or between NO1 and NO2.
5. Flatness is defined as the difference between the maximum and minimum value of on resistance as measured over the
specified analog signal ranges.
6. Off-isolation = 20log10 (V
COM
/ V
CO
), V
COM
= output, V
CO
= input to off switch.
IDT™
0.5 OHM, DUAL SPDT ANALOG SWITCH
5
IDTAS4684A
REV A 092507
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