The MAX4717/MAX4718 low-voltage, low on-resistance
(RON), dual single-pole/double throw (SPDT) analog
switches operate from a single +1.8V to +5.5V supply.
These devices are designed for USB 1.1 and audio
switching applications.
The MAX4717 features two 4.5Ω RON(max) SPDT
switches with 1.2Ω flatness and 0.3Ω matching between
channels. The MAX4718 features one 4.5Ω RON(max)
SPDT switch and one 20Ω RON(max) SPDT switch. The
20Ω switch has a guaranteed matching and flatness of
0.4Ω and 1.2Ω, respectively. These switches offer breakbefore-make switching (1ns) with tON<80ns and t
OFF
<40ns at +2.7V. The digital logic inputs are +1.8V logic
compatible with a +2.7V to +3.6V supply.
These switches are packaged in a chip-scale package
(UCSP™), significantly reducing the required PC board
area. The chip occupies only a 2.0mm ✕ 1.50mm area
and has a 4 ✕ 3 bump array with a bump pitch of 0.5mm.
These switches are also available in 10-pin µMAX®and
10-pin TDFN packages.
(V+ = +2.7V to +3.6V, VIH= +1.4V, VIL= +0.5V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V+ = +3.0V,
T
A
= +25°C, unless otherwise noted.) (Notes 2, 3)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
(All voltages are referenced to GND.)
V+, IN_...................................................................-0.3V to +6.0V
COM_, NO_, NC_ (Note 1) ...........................-0.3V to (V+ + 0.3V)
Continuous Current COM_, NO_, NC_ ...........................±100mA
Peak Current COM_, NO_, NC_
(pulsed at 1ms, 10% duty cycle)................................±200mA
INPUT RISE/FALL TIME = 15ns
FIGURE 4, C
V+ = 4.2V
LOW R
150
100
MISMATCH (ps)
50
0
-4085
= 50pF
L
SWITCH
ON
TEMPERATURE (°C)
603510-15
FREQUENCY RESPONSE
20
V+ = 3V/5V
0
-20
-40
-60
ON-LOSS (dB)
-80
-100
-120
-140
ON-LOSS
OFF-ISOLATION
0.0001100
FREQUENCY (MHz)
400
MAX4717/18 toc22
300
200
SKEW (ps)
100
LOW RON SWITCH
CROSSTALK
10.01
SKEW vs. SUPPLY VOLTAGE
INPUT RISE/FALL TIME = 15ns
FIGURE 4, C
MAX4717 ONLY
0
1.55.5
= 50pF
L
SUPPLY VOLTAGE (V)
MAX4717/18 toc25
4.53.52.5
20
V+ = 3V/5V
0
-20
-40
-60
ON-LOSS (dB)
-80
-100
-120
-140
0.0001100
200
MAX4717/18 toc23
150
100
SKEW (ps)
50
0
FREQUENCY RESPONSE
ON-LOSS
OFF-ISOLATION
FREQUENCY (MHz)
SKEW vs. TEMPERATURE
INPUT RISE/FALL TIME = 15ns
FIGURE 4, C
V+ = 4.2V
MAX4717 ONLY
-4085
10.01
= 50pF
L
TEMPERATURE (°C)
HIGH RON SWITCH
CROSSTALK
MAX4717/18 toc26
MAX4717/18 toc24
603510-15
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
1
V+ = 3V
SWITCH
LOW R
ON
Ω
= 600
R
L
0.1
THD (%)
0.01
10100k
FREQUENCY (Hz)
MAX4717/18 toc27
THD (%)
10k1k100
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
1
V+ = 3V
SWITCH
HIGH R
ON
Ω
= 600
R
L
0.1
0.01
10100k
FREQUENCY (Hz)
10k1k100
MAX4717/18 toc28
MAX4717/MAX4718
Detailed Description
The MAX4717/MAX4718 high-speed, low-voltage, low onresistance (RON), dual SPDT analog switches operate
from a single +1.8V to +5.5V supply. The switches feature
break-before-make switching operation and fast switching speeds (tON= 80ns (max), t
OFF
= 40ns (max)).
These switches have low 15pF on-channel capacitance, which allows for 12Mbps switching of the data
signals for USB 1.0/1.1 applications. The MAX4717 is
designed to switch D+ and D- USB signals with a guaranteed skew of less than 2ns (see Figure 4) as measured from 50% of the input signal to 50% of the output
signal.
Applications Information
Digital Control Inputs
The MAX4717/MAX4718 logic inputs accept up to
+5.5V regardless of supply voltage. For example, with
a +3.3V supply, IN_ can be driven low to GND and high
to +5.5V allowing for mixing of logic levels in a system.
Driving the control logic inputs rail-to-rail minimizes
power consumption. For a +3V supply voltage, the
logic thresholds are 0.5V (low) and 1.4V (high); for a
+5V supply voltage, the logic thresholds are 0.8V (low)
and 2.0V (high).
Analog Signal Levels
The on-resistance of the MAX4717/MAX4718 changes
very little for analog input signals across the entire supply
voltage range (see the Typical Operating Characteristics).
The switches are bidirectional, so the NO_, NC_, and
COM_ pins can be either inputs or outputs.
Power-Supply Sequencing and
Overvoltage Protection
Caution: Do not exceed the absolute maximum ratings because stresses beyond the listed ratings
may cause permanent damage to the device.
Proper power-supply sequencing is recommended for
all CMOS devices. Always apply V+ before applying
analog signals, especially if the analog signal is not
current-limited.
UCSP Application Information
For the latest application details on UCSP construction,
dimensions, tape carrier information, printed circuit
board techniques, bump-pad layout, and recommended reflow temperature profile as well as the latest information on reliability testing results, go to the Maxim
web site at www.maxim-ic.com/ucsp to find the
Application Note: USCP—A Wafer-Level Chip-ScalePackage.
Chip Information
TRANSISTOR COUNT: 235
PROCESS: BiCMOS
4.5Ω/20Ω, 300MHz Bandwidth, Dual SPDT
Analog Switches in UCSP
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
CROSSTALK = 20log
∆V
OUT
OFF
OFF
)(CL)
OFF-ISOLATION = 20log
ON-LOSS = 20log
V
OUT
V
IN
V
OUT
V
IN
V
OUT
V
IN
MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM_ AND "OFF" NO_ OR NC_ TERMINAL ON EACH SWITCH.
ON-LOSS IS MEASURED BETWEEN COM_ AND "ON" NO_ OR NC_ TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL.
SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
V+
10nF
V+
COM_
MAX4717/
MAX4718
CAPACITANCE
METER
f = 1MHz
NC_ or
NO_
GND
*FOR CROSSTALK THIS PIN IS NO2.
NC2 AND COM2 ARE OPEN.
IN
OR V
V
IL
IH
MAX4717/MAX4718
4.5Ω/20Ω, 300MHz Bandwidth, Dual SPDT
Analog Switches in UCSP
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages
.)
12L, UCSP 4x3.EPS
PACKAGE OUTLINE, 4x3 UCSP
21-0104
1
F
1
MAX4717/MAX4718
4.5Ω/20Ω, 300MHz Bandwidth, Dual SPDT
Analog Switches in UCSP
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages
.)
e
10
Ø0.50±0.1
0.6±0.1
1
0.6±0.1
TOP VIEW
D2
A2
D1
FRONT VIEW
4X S
10
DIM
H
1
BOTTOM VIEW
E2
GAGE PLANE
A
b
A1
α
E1
L
L1
SIDE VIEW
INCHES
MIN
-A
0.002
A1
A20.0300.0370.750.95
0.116
D1
0.114
D2
0.116
E1
0.114
E2
0.187
H
0.0157
L
L1
0.037 REF
0.007
b
e
0.0197 BSC
0.0035
c
0.0196 REF
S
α
0°0°6°
c
MAX
0.043
0.006
0.120
0.118
0.120
0.118
0.199
0.0275
0.0106
0.0078
6°
MILLIMETERS
MAX
MIN
1.10
-
0.15
0.05
3.05
2.95
3.00
2.89
3.05
2.95
2.89
3.00
4.75
5.05
0.40
0.70
0.940 REF
0.177
0.270
0.500 BSC
0.090
0.200
0.498 REF
10LUMAX.EPS
PROPRIETARY INFORMATION
TITLE:
PACKAGE OUTLINE, 10L uMAX/uSOP
REV.DOCUMENT CONTROL NO.APPROVAL
21-0061
1
I
1
Package Information (continued)
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages
.)
MAX4717/MAX4718
4.5Ω/20Ω, 300MHz Bandwidth, Dual SPDT
Analog Switches in UCSP
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600