19-1165; Rev 0; 12/96
Phase-Reversal Analog Switches
_______________General Description
The MAX4526/MAX4527 are CMOS analog ICs config-
ured as phase-reversal switches. The MAX4526 is
optimized for high-speed applications, such as chop-
per amplifiers, while the MAX4527 is optimized for
low-power applications.
The MAX4526/MAX4527 operate from a +4.5V to +36V
single supply or ±4.5V to ±18V dual supplies. On-resis-
tance (175Ω max) is matched between switches to 8Ω
maximum. Each switch can handle rail-to-rail analog
signals. Maximum leakage current is only 0.5nA at
+25°C and 10nA at +85°C.
All digital inputs have 0.8V to 2.4V logic thresholds,
ensuring TTL/CMOS-logic compatibility.
____________________________Features
o
10pC (max) Charge Injection
o
2pC (max) Charge-Injection Match
o
175Ω Signal Paths with ±15V Supplies
o
Guaranteed Break-Before-Make
o
Rail-to-Rail Signal Handling
o
Transition Time < 100ns with ±15V Supplies
o
1µA Current Consumption (MAX4527)
o
>2kV ESD Protection per Method 3015.7
o
TTL/CMOS-Compatible Inputs
o
Available in Small, 8-Pin µMAX Package
MAX4526/MAX4527
______________Ordering Information
________________________Applications
Chopper-Stabilized Amplifiers
Balanced Modulators/Demodulators
Data Acquisition
Test Equipment
Audio-Signal Routing
PART
MAX4526CPA
MAX4526CSA
MAX4526CUA
MAX4526C/D
MAX4526EPA
MAX4526ESA
MAX4526EUA
TEMP. RANGE
0°C to +70°C
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
PIN-PACKAGE
8 Plastic DIP
8 SO
8 µMAX
Dice*
8 Plastic DIP
8 SO
8 µMAX
Ordering Information continued at end of data sheet.
*Contact factory for availability.
_________________________Pin Configuration/Functional Diagram/Truth Table
MAX4526
MAX4527
TOP VIEW
A 1
B 2
GND 3
IN 4
8
7
6
5
V+
X
Y
V-
IN
O
1
TRUTH TABLE
A
B
Y
X
X
Y
DIP/SO/µMAX
SWITCH POSITIONS SHOWN WITH IN = LOW
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
Phase-Reversal Analog Switches
MAX4526/MAX4527
ABSOLUTE MAXIMUM RATINGS
(Voltages Referenced to GND)
V+ ...........................................................................-0.3V to +44V
V- ............................................................................-25V to +0.3V
V+ to V-...................................................................-0.3V to +44V
All Other Pins (Note 1) ..........................(V- - 0.3V) to (V+ + 0.3V)
Continuous Current into Any Terminal..............................±20mA
Peak Current into Any Terminal
(pulsed at 1ms, 10% duty cycle)...................................±30mA
ESD per Method 3015.7 ..................................................>2000V
Continuous Power Dissipation (T
A
= +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) .............727mW
SO (derate 5.88mW/°C above +70°C) ..........................471mW
µMAX (derate 4.1mW/°C above +70°C) .......................330mW
Operating Temperature Ranges
MAX452_C_A .......................................................0°C to +70°C
MAX452_E_A ....................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
Note 1:
Signals on IN, A, B, X, or Y exceeding V+ or V- are clamped by internal diodes. Limit forward-diode current to maximum
current rating.
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—±15V Supplies
(V+ = +15V, V- = -15V, V
INH
= 2.4V, V
INL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
ANALOG SWITCH
Analog-Signal Range
A-X, A-Y, B-X, B-Y
On-Resistance
A-X, A-Y, B-X, B-Y
On-Resistance Match (Note 4)
A-X, A-Y, B-X, B-Y
On-Resistance Flatness (Note 5)
V
A
, V
B
,
V
X
, V
Y
R
ON
∆R
ON
R
FLAT(ON)
I
A(OFF)
,
I
B(OFF),
I
X(OFF)
,
I
Y(OFF)
V
INH
V
INL
I
INH
, I
INL
V
IN
_ = 0.8V or 2.4V
(Note 3)
V
A
= V
B
= ±10V,
I
A
= I
B
= 1mA
V
A
= V
B
= ±10V,
I
A
= I
B
= 1mA
V
A
= V
B
= -5V, 0V, +5V;
I
A
= I
B
= 1mA
V+ = 16.5V, V- = -16.5V;
V
IN
= 0V, 3V;
V
A
= ±15.5V, V
B
= ±15.5V
C, E
+25°C
C, E
+25°C
C, E
+25°C
C, E
+25°C
C, E
-0.5
-10
0.01
12
0.5
-V
105
V+
175
200
8
10
18
30
0.5
nA
10
V
Ω
Ω
Ω
SYMBOL
CONDITIONS
T
A
MIN
TYP
(Note 2)
MAX
UNITS
A, B, X, Y Leakage Current (Note 6)
LOGIC INPUT
IN Input Logic Threshold High
IN Input Logic Threshold Low
IN Input Current Logic High or Low
C, E
C, E
C, E
0.8
1
1.6
1.6
0.03
1
2.4
V
V
µA
2
_______________________________________________________________________________________
Phase-Reversal Analog Switches
MAX4526/MAX4527
ELECTRICAL CHARACTERISTICS—±15V Supplies (continued)
(V+ = +15V, V- = -15V, V
INH
= 2.4V, V
INL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
(Note 2)
65
95
MAX
UNITS
SWITCH DYNAMIC CHARACTERISTICS
V
A
= V
B
= ±10V,
V+ = 15V,
V- = -15V,
Figure 3
MAX4526
MAX4527
+25°C
C, E
+25°C
C, E
1
5
1
13
10
100
125
200
250
ns
pC
pF
ns
Transition Time
t
TRANS
Break-Before-Make Time Delay
Charge Injection (Note 3)
A-X, A-Y, B-X, B-Y Capacitance
A-X, A-Y, B-X, B-Y Isolation
(Note 7)
POWER SUPPLY
Power-Supply Range
t
BBM
Q
C
OFF
V
A
= V
B
= ±10V, V+ = 15V,
+25°C
V- = -15V, Figure 4
C
L
= 1.0nF, V
A
or V
B
= 0V,
R
S
= 0Ω, Figure 5
V
A
= V
B
= GND, f = 1MHz,
Figure 6
R
L
= 50Ω, C
L
= 15pF,
V
A
= V
B
= 1V
RMS
,
f = 1MHz, Figure 7
+25°C
+25°C
V
ISO
+25°C
-65
dB
V+, V-
MAX4526
C, E
+25°C
C, E
+25°C
C, E
+25°C
C, E
+25°C
C, E
±4.5
0.7
0.05
-400
-500
-1
-1
0.05
±20
1
1.5
1
10
V
mA
µA
V+ Supply Current
I+
V+ = 16.5V,
V
IN
= 0V or V+
MAX4527
MAX4526
V- Supply Current
I-
V- = -16.5V
MAX4527
µA
The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
Guaranteed by design.
∆R
ON
=
∆R
ON(MAX)
-
∆R
ON(MIN)
.
Resistance flatness is defined as the difference between the maximum and minimum values of on-resistance as measured
over the specified analog-signal range.
Note 6:
Leakage current is 100% tested at maximum rated hot temperature, and is guaranteed by correlation at T
A
= +25°C and
minimum rated cold temperature.
Note 7:
Off-isolation = 20log10 [(V
X
or V
Y
) / (V
A
or V
B
)], V
X
or V
Y
= output, V
A
or V
B
= input to off switch.
Note 2:
Note 3:
Note 4:
Note 5:
_______________________________________________________________________________________
3
Phase-Reversal Analog Switches
MAX4526/MAX4527
__________________________________________Typical Operating Characteristics
(V+ = +15V, V- = -15V, GND = 0V, T
A
= +25°C, unless otherwise noted.)
ON-RESISTANCE vs.
V
A
, V
B
, AND TEMPERATURE
(DUAL SUPPLIES)
MAX4526/27 TOC-03
MAX4526/27 TOC-01
ON-RESISTANCE vs. V
A
, V
B
(DUAL SUPPLIES)
350
300
250
R
ON
(Ω)
R
ON
(Ω)
200
V± = ±10V
150
100
50
0
-16
-12
-8
-4
0
4
V
A,
V
B
(V)
8
12
16
V± = ±15V
V± = ±5V
180
160
140
120
100
80
60
40
20
0
-15
ON-RESISTANCE vs. V
A
, V
B
(SINGLE SUPPLY)
V- = 0V
MAX4526/27 TOC-02
T
A
= +125°C
T
A
= +85°C
10,000
T
A
= +70°C
R
ON
(Ω)
1000
V+ = +5V
V+ = +10V
V+ = +15V
V+ = +20V
T
A
= -55°C
T
A
= -40°C
T
A
= 0°C
T
A
= +25°C
V+ = +15V
V- = -15V
-10
-5
0
V
A
, V
B
(V)
5
10
15
100
0
2
4
6
8
10 12 14 16 18 20
V
A,
V
B
(V)
ON-RESISTANCE vs.
V
A
, V
B
, AND TEMPERATURE
(SINGLE SUPPLY)
T
A
= +125°C
T
A
= +85°C
T
A
= +70°C
MAX4526/27 TOC-04
LEAKAGE vs. TEMPERATURE
MAX4526/27 TOC-05
CHARGE INJECTION, CHARGE-
INJECTION MATCHING vs. V
A,
V
B
V+ = 15V
V- = -15V
MAX4526/27 TOC-06
300
250
200
R
ON
(Ω)
150
100
50
100
V+ = 15V
V- = -15V
10
LEAKAGE (nA)
30
20
10
Qj (pC)
Q
YO
1
0
-10
∆Q
MATCHING
Q
XO
0.1
T
A
= -40°C
T
A
= 0°C
V+ = 15V
V- = 0V
T
A
= +25°C
T
A
= -55°C
0.01
-20
-30
-55 -35 -15
5
25
45
65
85 105 125
-15
-10
-5
0
V
A,
V
B
(V)
5
10
15
TEMPERATURE (°C)
0
0
2
4
6
8
V
A
, V
B
(V)
10
12
14
16
0.001
CHARGE INJECTION, CHARGE-INJECTION
MATCHING vs. V
A
, V
B
(SINGLE SUPPLY)
MAX4526/27 TOC-7
TRANSITION TIME
vs. SUPPLY VOLTAGE
MAX4526/27 TOC-08
TRANSITION TIME vs. TEMPERATURE
V+ = 15V
V- = -15V
MAX4526/27 TOC-09
15
V+ = 15V
V- = 0V
10
Qj (pC)
Q
YO
450
400
350
300
t
TRANS
(ns)
250
200
150
100
MAX4526
MAX4527
300
250
200
t
RANS
(ns)
150
100
50
0
5
Q
XO
0
MATCHING
∆Q
-5
0
2
4
6
8
10
12
14
16
V
A
, V
B
(V)
MAX4527
50
0
0
2
4
6
8 10 12 14 16 18 20
V+, V- (V)
MAX4526
-55 -35 -15
5
25
45
65
85 105 125
TEMPERATURE (°C)
4
_______________________________________________________________________________________
Phase-Reversal Analog Switches
_____________________________Typical Operating Characteristics (continued)
(V+ = +15V, V- = -15V, GND = 0V, T
A
= +25°C, unless otherwise noted.)
MAX4526
POSITIVE SUPPLY CURRENT vs. V
IN
MAX4526/27 TOC-10
MAX4526/27 TOC-11
MAX4526/MAX4527
SUPPLY CURRENT vs. TEMPERATURE
2.00
1.75
1.50
I+, I- (mA)
1.25
I+ (µA)
1.00
0.75
0.50
I+ (MAX4527)
0.25
0
-55 -35 -15
5
25
45
65
85 105 125
TEMPERATURE (°C)
I- (MAX4527)
I+ (MAX4526)
I- (MAX4526)
1000
900
800
700
600
500
400
300
200
100
0
0
MAX4527
POSITIVE SUPPLY CURRENT vs. V
IN
MAX4526/27 TOC-12
1000
100
10
I+ (µA)
1
0.1
0.01
0.001
V+ = 5V
V- = -5V
V+ = 15V
V- = -15V
V+ = 15V
V- = -15V
V+ = 5V
V- = -5V
2
4
6
8
V
IN
(V)
10
12
14
16
0
2
4
6
8
V
IN
(V)
10
12
14
16
MAX4526
FREQUENCY RESPONSE
MAX4526/27-TOC-14
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
V± = ±15V
600Ω IN AND OUT
MAX4526/27 TOC-16
0
-10
-20
-30
LOSS (dB)
ON - LOSS
100
10
THD (%)
-40
-50
-60
-70
-80
-90
-100
0.1
1
10
FREQUENCY (MHz)
100
1000
OFF - ISOLATION
1
0.1
0.01
10
100
1k
FREQUENCY (Hz)
10k
100k
_______________________________________________________________________________________
5
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