Maxim MAX309CUE Precision, 8-channel/dual 4-channel, high-performance, cmos analog multiplexer Datasheet

19-0271; Rev 2; 8/02
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
The MAX308/MAX309 are fabricated with Maxim’s
improved 44V silicon-gate process. Design improvements yield extremely low charge injection (less than
10pC) and guarantee electrostatic discharge protection
greater than 2000V.
These muxes operate with a single +5V to +30V supply
or bipolar ±5V to ±20V supplies, while retaining
TTL/CMOS-logic input compatibility and fast switching.
CMOS inputs provide reduced input loading. These
improved parts are plug-in upgrades for the industrystandard DG408, DG409, DG508A, and DG509A.
________________________Applications
Sample-and-Hold Circuits
Automatic Test Equipment
Heads-Up Displays
Guidance and Control Systems
Military Radios
Communications Systems
Battery-Operated Systems
PBX, PABX
Audio Signal Routing
____________________________Features
♦ Guaranteed On-Resistance Match Between
Channels, <5Ω Max
♦ Low On-Resistance, <100Ω Max
♦ Guaranteed Flat On-Resistance over Specified
Signal Range, 7Ω Max
♦ Guarateed Low Charge Injection, <10pC
♦ NO-Off Leakage Current <5nA at +85°C
♦ COM-Off Leakage Current <20nA at +85°C
♦ ESD Protection >2000V
♦ Plug-In Upgrade for Industry-Standard
DG408/DG409/DG508A/DG509A
♦ Single-Supply Operation (+5V to +30V)
Bipolar-Supply Operation (±5V to ±20V)
♦ Low Power Consumption, <300µW
♦ Rail-to-Rail Signal Handling
♦ TTL/CMOS-Logic Compatible
______________Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX308CPE
0°C to +70°C
16 Plastic DIP
MAX308CSE
MAX308C/D
MAX308CUE
MAX308EPE
MAX308ESE
MAX308EJE
MAX308EUE
MAX308MJE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
16 Narrow SO
Dice*
16 TSSOP
16 Plastic DIP
16 Narrow SO
16 CERDIP
16 TSSOP
16 CERDIP**
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
**Contact factory for availability.
_____________________Pin Configurations/Functional Diagrams/Truth Tables
V+
TOP VIEW
16 A1
EN 2
15 A2
V- 3
14 GND
NO4
13 V+
NO5
NO2 5
12 NO5
NO6
NO3 6
11 NO6
NO7
NO4 7
10 NO7
NO8
MAX308
COM 8
9
NO8
GND
NO1
A0 1
NO1 4
V-
NO2
NO3
COM
CMOS DECODE LOGIC
DIP/SO/TSSOP
Continued at end of data sheet.
A2
A1
A0
EN
MAX308 8-CHANNEL SINGLE-ENDED MULTIPLEXER
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
MAX308/MAX309
_______________General Description
The MAX308/MAX309 precision, monolithic, CMOS analog multiplexers (muxes) offer low on-resistance (less
than 100Ω), which is matched to within 5Ω between
channels and remains flat over the specified analog signal range (7Ω max). They also offer low leakage over
temperature (NO-off leakage current less than 5nA at
+85°C) and fast switching speeds (transition time less
than 250ns). The MAX308 is a single-ended 1-of-8
device, and the MAX309 is a differential 2-of-4 device.
MAX308/MAX309
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to VV+ ............................................................................-0.3V, 44V
GND .........................................................................-0.3V, 25V
Digital Inputs, NO, COM (Note 1)...........(V- - 2V) to (V+ + 2V) or
30mA, (whichever occurs first)
Continuous Current (any terminal) ......................................30mA
Peak Current, NO or COM
(pulsed at 1ms, 10% duty cycle max) ..........................100mA
Continuous Power Dissipation (TA = +70°C)
Plastic DIP (derate 10.53mW/°C above +70°C) ..........842mW
Narrow SO (derate 8.70mW/°C above +70°C) ............696mW
CERDIP (derate 10.00mW/°C above +70°C) ...............800mW
TSSOP (derate 6.7mW/°C above +70°C) ....................457mW
Operating Temperature Ranges
MAX30_C_ _ .......................................................0°C to +70°C
MAX30_E_ _.....................................................-40°C to +85°C
MAX30_MJE ..................................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Signals on NO, COM, EN, A0, A1, or A2 exceeding V+ or V- are clamped by internal diodes. Limit forward current to
maximum current ratings.
Note 1:
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.
ELECTRICAL CHARACTERISTICS—Dual Supplies
(V+ = +15V, V- = -15V, GND = 0V, VAH = +2.4V, VAL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
MIN
CONDITIONS
TYP
MAX
(Note 2)
UNITS
SWITCH
Analog Signal Range
On-Resistance
VNO,
VCOM
RON
(Note 3)
-15
INO = -1.0mA,
VCOM = ±10V
TA = +25°C
∆RON
INO = -1.0mA,
VCOM = ±10V (Note 4)
TA = +25°C
On-Resistance Flatness
RFLAT
INO = -1.0mA,
VCOM = ±5V or 0V
TA = +25°C
NO-Off Leakage Current
(Note 5)
VCOM = +10V,
VNO = ±10V,
VEN = 0V
TA = +25°C
INO(OFF)
VNO = ±10V,
VCOM = +10V, MAX308
VEN = 0V
TA = +25°C
VNO = +10V,
VCOM = ±10V, MAX309
VEN = 0V
TA = +25°C
ICOM(OFF)
60
TA = TMIN to TMAX
On-Resistance Matching
Between Channels
COM-Off Leakage Current
(Note 5)
TA = TMIN to TMAX
TA = TMIN
to TMAX
TA = TMIN
to TMAX
2
ICOM(ON)
VCOM = ±10V, MAX308
VNO = ±10V,
sequence
each switch
MAX309
on
TA = TMIN
to TMAX
1.8
7
10
-0.5
0.01
-2.5
2.5
M
-5.0
5.0
-0.75
0.02
-10
10
M
-20
20
0.02
0.75
C, E
-5
5
M
-10
10
-0.75
C, E
-10
M
-20
-0.75
0.02
Ω
Ω
Ω
nA
0.75
C, E
-0.75
V
0.5
C, E
TA = +25°C
TA = TMIN
to TMAX
5
8
TA = TMIN to TMAX
TA = TMIN
to TMAX
100
125
1.5
TA = +25°C
COM-On Leakage Current
(Note 5)
15
nA
0.75
10
20
0.02
0.75
C, E
-5
5
M
-10
10
_______________________________________________________________________________________
nA
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
(V+ = +15V, V- = -15V, GND = 0V, VAH = +2.4V, VAL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
(Note 2)
UNITS
INPUT
Input Current with
Input Voltage High
IAH
VA = 2.4V or 15V
-1.0
1.0
µA
Input Current with
Input Voltage Low
IAL
VEN = 0V or 2.4V,
VA = 0V
-1.0
1.0
µA
±20
30
75
0.5
V
SUPPLY
Power-Supply Range
±5
VEN = VA = 0V or 4.5V
Positive Supply Current
Negative Supply Current
I+
I-
VEN = 2.4V,
VA(ALL) = 0V or 2.4V
VEN = 2.4V,
VA(ALL) = 0V or 2.4V
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
16
0.075
-1
-10
µA
mA
1
10
µA
175
250
ns
DYNAMIC
Transistion Time
tTRANS
Figure 2
Break-Before-Make Interval
tOPEN
Figure 4
Enable Turn-On Time
tON(EN)
Figure 3
Enable Turn-Off Time
tOFF(EN)
Figure 3
Charge Injection
(Note 3)
Q
CL = 1.0nF,
VNO = 0V,
RS = 0Ω, Figure 5
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = +25°C
TA = TMIN to TMAX
TA = +25°C
TA = TMIN to TMAX
85
10
40
85
TA = +25°C
2
ns
150
225
150
300
10
ns
ns
pC
VISO
VEN = 0V,
RL = 1kΩ,
f = 100kHz, Figure 6
TA = +25°C
-75
dB
Crosstalk Between Channels
VCT
VEN = 2.4V,
f = 100kHz,
VGEN = 1VP-P,
RL = 1kΩ, Figure 7
TA = +25°C
-92
dB
Logic Input Capacitance
CIN
f = 1MHz
TA = +25°C
8
pF
f = 1MHz,
VEN = VNO = 0V,
Figure 8
TA = +25°C
3
pF
Off Isolation
(Note 6)
NO-Off Capacitance
COM-Off Capacitance
COM-On Capacitance
CNO(OFF)
f = 1MHz,
VEN = 0.8V
CCOM(OFF)
VCOM = 0V,
Figure 8
f = 1MHz,
VEN = 2.4V
CCOM(ON)
VCOM = 0V,
Figure 8
MAX308
26
TA = +25°C
MAX309
pF
14
MAX308
37
TA = +25°C
MAX309
pF
25
_______________________________________________________________________________________
3
MAX308/MAX309
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
MAX308/MAX309
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
ELECTRICAL CHARACTERISTICS—Single Supply
(V+ = +12V, V- = 0V, GND = 0V, VAH = +2.4V, VAL = +0.8V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
(Note 2)
UNITS
SWITCH
Analog Signal Range
On-Resistance
VNO,
VCOM
RON
(Note 3)
INO = -1.0mA
VCOM = 3V or 10V
0
12
V
TA = +25°C
120
175
Ω
TA = +25°C
115
450
ns
TA = +25°C
100
600
ns
TA = +25°C
75
300
ns
TA = +25°C
2
10
pC
DYNAMIC
Transition Time
(Note 3)
tTRANS
Enable Turn-On Time
(Note 3)
tON(EN)
Enable Turn-Off Time
(Note 3)
tOFF(EN)
Charge Injection
(Note 3)
Q
VNO1 = 8V,
VNO8 = 0V,
VIN = 2.4V,
Figure 2
VINH = 2.4V,
VINL = 0V,
VNO1 = 5V,
Figure 3
VINH = 2.4V,
VINL = 0V,
VNO1 = 5V,
Figure 3
CL = 1.0nF,
VNO = 0V,
RS = 0Ω
Note 2: The algebraic convention where the most negative value is a minimum and the most positive value a maximum is used in
this data sheet.
Note 3: Guaranteed by design.
Note 4: ∆RON = RON(MAX) - RON(MIN). On-resistance match between channels and flatness are guaranteed only with specified
voltages. Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured at
the extremes of the specified analog signal range.
Note 5: Leakage parameters are 100% tested at the maximum rated hot temperature and guaranteed by correlation at +25°C.
Note 6: Off isolation = 20log VCOM/VNO, where VCOM = output and VNO = input to off switch.
4
_______________________________________________________________________________________
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
ON-RESISTANCE vs. VCOM AND
TEMPERATURE (DUAL SUPPLIES)
140
±5V
V+ = +15V
V- = -15V
400
100
360
320
120
+125°C
80
±15V
60
60
+25°C
-55°C
40
±20V
RON (Ω)
200
160
40
10V
120
20
0
-15 -10
-5
0
5
10
15
-15
20
-10
-5
ON-RESISTANCE vs. VCOM AND
TEMPERATURE (SINGLE SUPPLY)
+25°C
80
-55°C
60
15
0
ICOM (ON)
0
15
0.1
ICOM (ON)
0.001
0.0001
-55 -35 -15
VCOM (V)
5
25 45
65
-55 -35 -15
85 105 125
I+
10
I+, I- (µA)
0
V+ = 12V
V- = 0V
-10
85 105 125
MAX4308/9-TOC8
MAX308/9 TOC-07
100
V+ = +15V
V- = -15V
10
65
SUPPLY CURRENT vs. TEMPERATURE
CHARGE INJECTION vs. VCOM
20
25 45
5
TEMPERATURE (°C)
TEMPERATURE (°C)
30
Qj (pC)
1
0.01
0.0001
10
20
10
INO (OFF)
0.001
20
V+ = 15V
V- = -15V
100
1
0.1
15
1000
10
0.01
5
10
ON LEAKAGE vs. TEMPERATURE
V+ = 15V
V- = -15V
100
40
0
5
VCOM (V)
MAX308/9 TOC-05
MAX308/9 TOC-04
+85°C
100
10
1000
OFF LEAKAGE (nA)
+125°C
120
5
OFF LEAKAGE vs. TEMPERATURE
V+ = 15V
V- = 0V
140
0
VCOM (V)
VCOM (V)
160
20V
40
ON LEAKAGE (nA)
0
-20
15V
80
20
RON (Ω)
5V
240
MAX308/9 TOC-05
RON (Ω)
80
280
+85°C
RON (Ω)
±10V
100
MAX308/9 TOC-03
120
MAX308/9 TOC-01
160
ON-RESISTANCE vs. VCOM
(SINGLE SUPPLY)
MAX308/9 TOC-02
ON-RESISTANCE vs. VCOM
(DUAL SUPPLIES)
1
0.1
I0.01
-20
V+ = +15V
V- = -15V
VEN = VA = 0V, 4.5V
0.001
-30
-15
-10
-5
0
VCOM (V)
5
10
15
-55 -35 -15
5
25 45
65
85 105 125
TEMPERATURE (°C)
_______________________________________________________________________________________
5
MAX308/MAX309
__________________________________________Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
MAX308/MAX309
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
______________________________________________________________Pin Description
PIN
NAME
FUNCTION
MAX308
MAX309
1, 15, 16
—
A0, A2, A1
Address Inputs
—
1, 16
A0, A1
Address Inputs
2
2
EN
Enable Input
3
3
V-
Negative Supply Voltage Input
4–7
—
NO1–NO4
Analog Inputs—Bidirectional
—
4–7
NO1A–NO4A
Analog Inputs—Bidirectional
8
—
COM
Analog Output—Bidirectional
—
8, 9
COMA, COMB
Analog Outputs—Bidirectional
9–12
—
NO8–NO5
Analog Inputs—Bidirectional
—
10–13
NO4B–NO1B
Analog Inputs—Bidirectional
13
14
V+
Positive Supply Voltage Input
14
15
GND
Ground
__________Applications Information
V+
Operation with
Supply Voltages Other than 15V
Using supply voltages less than ±15V will reduce the
analog signal range. The MAX308/MAX309 switches
operate with ±5V to ±20V bipolar supplies or with a
+5V to +30V single supply. Connect V- to GND when
operating with a single supply. Both device types can
also operate with unbalanced supplies, such as +24V
and -5V. The Typical Operating Characteristics graphs
show typical on-resistance with 20V, 15V, 10V, and 5V
supplies. (Switching times increase by a factor of two
or more for operation at 5V.)
Overvoltage Protection
Proper power-supply sequencing is recommended for
all CMOS devices. Do not exceed the absolute maximum ratings, because stresses beyond the listed ratings may cause permanent damage to the devices.
Always sequence V+ on first, then V-, followed by the
logic inputs, NO, or COM. If power-supply sequencing
is not possible, add two small signal diodes in series
with supply pins for overvoltage protection (Figure 1).
Adding diodes reduces the analog signal range to 1V
below V+ and 1V above V-, but does not affect the
devices’ low switch resistance and low leakage characteristics. Device operation is unchanged, and the difference between V+ and V- should not exceed +44V.
6
NO
COM
Vg
V-
Figure 1. Overvoltage Protection Using External Blocking
Diodes
_______________________________________________________________________________________
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
+15V
V+
NO1
A2
A1
±10V
NO2-NO7
A0
MAX308
NO8
EN
+10V
COM
GND
VOUT
V-
LOGIC
INPUT
50%
35pF
50Ω
0V
300Ω
-15V
+15V
VNO1
SWITCH
OUTPUT
VOUT
V+
NO1B
A1
±10V
90%
0V
A0
90%
NO1A-NO4A
VNO8
NO4B
MAX309
EN
+10V
tTRANS
COMB
V-
GND
tr < 20ns
tf < 20ns
+3V
50Ω
tTRANS
ON
VOUT
35pF
300Ω
-15V
Figure 2. Transition Time
+15V
V+
EN
NO1
-5V
NO2-NO8
A0
A1
MAX308
A2
COM
GND
50Ω
VOUT
V-
35pF
1k
LOGIC
INPUT
A1
50Ω
tOFF(EN)
0V
+15V
V+
NO1B
10%
SWITCH
OUTPUT
-5V
NO1A-NO4A
NO2B-NO4B,
COMA
A0
50%
0V
tON(EN)
-15V
EN
tr < 20ns
tf < 20ns
+3V
90%
VOUT
MAX309
GND
COMB
V-
VOUT
1k
35pF
-15V
Figure 3. Enable Switching Time
_______________________________________________________________________________________
7
MAX308/MAX309
______________________________________________Test Circuits/Timing Diagrams
MAX308/MAX309
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
_________________________________Test Circuits/Timing Diagrams (continued)
+15V
+2.4V
V+
EN
NO1-NO8
LOGIC
INPUT
+5V
tr < 20ns
tf < 20ns
+3V
50%
0V
A0
A1
VOUT
MAX308
80%
A2
COM
GND
SWITCH
OUTPUT
VOUT
V-
35pF
tOPEN
0V
300Ω
50Ω
-15V
Figure 4. Break-Before-Make Interval
+15V
RS
V+
NO
LOGIC
INPUT
EN
VS
CHANNEL
SELECT
OFF
ON
OFF
0V
A0
COM
A1
A2
+3V
VOUT
MAX308
CL = 1000nF
GND
V-
∆VOUT
VOUT
∆VOUT IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
ERROR Q WHEN THE CHANNEL TURNS OFF.
-15V
Q = CL = ∆VOUT
Figure 5. Charge Injection
8
_______________________________________________________________________________________
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
+15V
+15V
VIN
VIN
NO1
RS = 50Ω
V+
NO8
COM
A1
V+
NO1
NO2
NO8
A0
10nF
10nF
VOUT
RS = 50Ω
MAX308
RL = 1kΩ
A2
MAX308
COM
A0
A1
RL = 1kΩ
A2
EN
GND
10nF
V-
GND
OFF ISOLATION = 20log
EN
10nF
-15V
VOUT
VIN
CROSSTALK = 20log
Figure 6. Off Isolation
VOUT
V-
-15V
VOUT
VIN
Figure 7. Crosstalk
+15V
V+
NO1
A2
CHANNEL
SELECT
MAX308
A1
NO8
A0
GND
EN
COM
V-
Meter
Impedance
Analyzer
or Equivalent
f = 1MHz
-15V
Figure 8. NO/COM Capacitance
_______________________________________________________________________________________
9
MAX308/MAX309
_________________________________Test Circuits/Timing Diagrams (continued)
MAX308/MAX309
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
________Pin Configurations/Functional Diagrams/Truth Tables (continued)
TOP VIEW
V+
V-
GND
NO1A
A0 1
16 A1
NO2A
EN 2
15 GND
NO3A
14 V+
NO4A
V- 3
MAX309
NO1A 4
COMA
13 NO1B
NO1B
NO2A 5
12 NO2B
NO3A 6
11 NO3B
NO4A 7
10 N04B
COMA 8
COMB
9
NO2B
COMB
NO3B
NO4B
CMOS DECODE LOGIC
DIP/SO/TSSOP
A1
EN
A0
MAX309 4-CHANNEL DIFFERENTIAL MULTIPLEXER
A2
A1
A0
EN
ON
SWITCH
X
X
X
0
None
A1
A0
EN
0
0
0
0
0
1
1
1
1
2
ON
SWITCH
X
X
0
None
0
0
1
1
1
1
1
1
0
0
1
1
0
1
0
1
0
1
1
1
1
1
1
1
3
4
5
6
7
8
0
0
1
1
0
1
1
2
1
0
1
3
1
1
1
4
MAX308
LOGIC “0” VAL ≤ 0.8V, LOGIC “1” VAH ≥ 2.4V
10
MAX309
LOGIC “0” VAL ≤ 0.8V, LOGIC “1” VAH ≥ 2.4V
______________________________________________________________________________________
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
TEMP RANGE
PIN-PACKAGE
MAX309CPE
PART
0°C to +70°C
16 Plastic DIP
MAX309CSE
0°C to +70°C
16 Narrow SO
MAX309CUE
MAX309C/D
MAX309EPE
MAX309ESE
MAX309EJE
MAX309EUE
MAX309MJE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
16 TSSOP
Dice*
16 Plastic DIP
16 Narrow SO
16 CERDIP
16 TSSOP
16 CERDIP**
Package Information
For the latest package outline information, go to
www.maxim-ic.com/packages.
*Contact factory for dice specifications.
**Contact factory for availability.
______________________________________________________________________________________
11
MAX308/MAX309
_Ordering Information (continued)
MAX308/MAX309
Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
__________________________________________________________Chip Topographies
MAX308
EN
A0
A1
A2
MAX309
GND
EN
A0
A1
N.C. GND
N.C.
VNO1
NO2
V+
NO4
COM NO8
V+
NO5
NO1A
NO1B
NO6
NO2A
NO2B
0.136
(3.45mm)
N.C.
NO3
N.C.
V-
NO7
0.136
(3.45mm)
NO3B
NO3A
NO4A
0.080"
(2.03mm)
COMA
COMB
NO4B
0.080"
(2.03mm)
N.C. = NO INTERNAL CONNECTION
TRANSISTOR COUNT: 122
TRANSISTOR COUNT: 122
SUBSTRATE CONNECTED TO V+
SUBSTRATE CONNECTED TO V+
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.
12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600
© 2002 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.