Datasheet MAX4528CSA, MAX4528CPA, MAX4528EUA, MAX4528ESA, MAX4528EPA Datasheet (Maxim)

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________________General Description

The MAX4528 low-voltage, CMOS analog IC is config­ured as a phase-reversal switch and optimized for high­speed applications such as chopper amplifiers. It
operates from a +2.7V to +12V single supply or from
±2.7V to ±6V dual supplies.

On-resistance (110Ω max) is matched between switch­es to 7Ω (max). Each switch can handle Rail-to-Rail

®

analog signals. The leakage current is only 0.5nA at
+25°C and 20nA at +85°C. All digital inputs have 0.8V
to 2.4V logic thresholds, ensuring both TTL- and
CMOS-logic compatibility.

For higher voltage operation, see the MAX4526/
MAX4527 data sheet.

________________________Applications

Chopper-Stabilized Amplifiers
Balanced Modulators/Demodulators
Data Acquisition
Test Equipment
Audio-Signal Routing

____________________________Features

♦ 5pC (max) Charge Injection
♦ 110Ω Signal Paths with ±5V Supplies
♦ Rail-to-Rail Signal Handling
♦ Transition Time <100ns with ±5V Supplies
♦ 1.0µA (max) Current Consumption
♦ >2kV ESD Protection per Method 3015.7
♦ TTL/CMOS-Compatible Input
♦ Small Packages: 8-Pin SO, DIP, and µMAX

MAX4528

Low-Voltage, Phase-Reversal

Analog Switch

________________________________________________________________

Maxim Integrated Products

1

_________________________Pin Configuration/Functional Diagram/Truth Table

Y

SWITCH POSITIONS SHOWN WITH IN = LOW

V-

IN

1
2

8

7

V+
X

B

GND

A

MAX4528

DIP/SO/µMAX

TOP VIEW

3

4

6

5

TRUTH TABLE

IN

O
1

A

Y
X

B

X
Y

19-1325; Rev 0; 1/98

PART

MAX4528CPA
MAX4528CSA
MAX4528CUA 0°C to +70°C

0°C to +70°C

0°C to +70°C

TEMP. RANGE PIN-PACKAGE

8 Plastic DIP
8 SO
8 µMAX

_______________Ordering Information

*

Contact factory for availability.

MAX4528C/D
MAX4528EPA
MAX4528ESA -40°C to +85°C

-40°C to +85°C

0°C to +70°C Dice*

8 Plastic DIP
8 SO

MAX4528EUA -40°C to +85°C 8 µMAX

Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.

MAX4528

Low-Voltage, Phase-Reversal
Analog Switch

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS: ±5V Dual Supplies

(V+ = 5V, V- = -5V, V

INH

= 2.4V, V

INL

= 0.8V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.)

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.

(Voltages Referenced to GND)

V+ .............................................................................-0.3V to 13V

V-...............................................................................-13V to 0.3V

V+ to V-.....................................................................-0.3V to 13V

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)...................................±50mA

ESD per Method 3015.7 ..................................................>2000V

Continuous Power Dissipation (T

A

= +70°C) (Note 2)

Plastic DIP (derate 9.09mW/°C above +70°C) ............727mW

SO (derate 5.88mW/°C above +70°C).........................471mW

µMAX (derate 4.10mW/°C above +70°C) ....................330mW

Operating Temperature Ranges

MAX4528C_ _ .....................................................0°C to +70°C

MAX4528E_ _ ..................................................-40°C to +85°C

Storage Temperature Range.............................-65°C to +150°C

Lead Temperature (soldering, 10sec).............................+300°C

V

A

= VB= ±3V, IA= IB= 1mA

(Note 4)

CL= 1.0nF, VAor VB= 0V, Figure 5

VA= VB= ±3V, V+ = 5V, V- = -5V,
RL= 300Ω, Figure 4

VA= VB= ±3V, V+ = 5V, V- = -5V,
RL= 300Ω, Figure 3

RL= 50Ω, CL= 15pF, f = 1MHz,
VA= VB= 1V

RMS

, Figure 7

V

IN_

= 0.8V or 2.4V

VA= VB= GND, f = 1MHz, Figure 6

CONDITIONS

dB-68V

ISO

A-X, A-Y, B-X, B-Y Isolation
(Note 8)

pF13C

ON

A-X, A-Y, B-X, B-Y Capacitance

Ω

70 110

R

ON

A-X, A-Y, B-X, B-Y
On-Resistance

VV- V+

VA, VB,

VX, V

Y

Analog-Signal Range

pC1 5QCharge Injection (Note 4)

ns

1 20

t

BBM

Break-Before-Make Time Delay

ns

70 100

t

TRANS

Transition Time

V1.6 2.4V

INH

IN Input Logic Threshold High

V0.8 1.6V

INL

IN Input Logic Threshold Low

µA-1 0.03 1

I

INH

,

I

INL

IN Input Current Logic High
or Low

UNITS

MIN TYP MAX

(Note 3)

SYMBOLPARAMETER

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.

Note 2: All leads are soldered or welded to PC boards.

VA= VB= ±3V, IA= IB= 1mA Ω

3 7

∆R

ON

A-X, A-Y, B-X, B-Y
On-Resistance Match (Note 5)

VA= VB= 3V, 0V, -3V;
IA= IB= 1mA

Ω

9 15

R

FLAT(ON)

A-X, A-Y, B-X, B-Y
On-Resistance Flatness (Note 6)

V+ = 5.5V; V- = -5.5V; VIN= 0V, 3V;
VA= ±4.5V; VB= –+4.5V

nA

-0.5 0.01 0.5

IA, IB,

IX, I

Y

A-B, X-Y Leakage Current
(Note 7)

+25°C

+25°C

C, E

+25°C

+25°C

+25°C

+25°C

C, E
C, E

+25°C

C, E

+25°C

T

A

+25°C

C, E 130

C, E

C, E

C, E

9

17

-20 20

C, E

C, E

125

ANALOG SWITCH

LOGIC INPUT

SWITCH DYNAMIC CHARACTERISTICS

MAX4528

Low-Voltage, Phase-Reversal

Analog Switch

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS: +5V Single Supply

(V+ = 5V, V- = 0V, V

INH

= 2.4V, V

INL

= 0.8V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.)

ELECTRICAL CHARACTERISTICS: ±5V Dual Supplies (continued)

(V+ = 5V, V- = -5V, V

INH

= 2.4V, V

INL

= 0.8V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at TA= +25°C.)

CONDITIONS T

A

UNITS

MIN TYP MAX

(Note 3)

SYMBOLPARAMETER

C, E V±2.7 ±6V+, V-Power-Supply Range

VIN= 0V or V+

C, E

µA

-10 10

I+V+ Supply Current

+25°C -1 1

+25°C -1 1

VIN= 0V or V+

C, E

µA

-10 10

I-V- Supply Current

VA= VB= 3V, IA= IB= 1mA

(Note 4)

V+ = 5.5V; V

I

N

= 0V, 3V;

VA= 4.5V, 1V; VB= 1V, 4.5V

nA

-0.5 0.01 0.5

IA, IB,

IX, I

Y

CL= 1.0nF, VAor VB= 0V, Figure 5

VA= VB= 3V, V+ = 5V, RL= 300Ω,
Figure 4

+25°C

VA= VB= 3V, V+ = 5V, RL= 300Ω,
Figure 3

RL= 50Ω, CL= 15pF, f = 1MHz,
VA= VB= 1V

RMS

, Figure 7

V

IN_

= 0.8V or 2.4V

VA= VB= GND, f = 1MHz, Figure 6

CONDITIONS

A-B, X-Y Leakage Current
(Note 9)

C, E

+25°C

+25°C

+25°C

+25°C

C, E
C, E

+25°C

C, E

+25°C

T

A

+25°C

C, E 200

C, E

C, E

12

-20 20

C, E

C, E

200

dB-70V

ISO

A-X, A-Y, B-X, B-Y Isolation
(Note 8)

pF17C

OFF

A-X, A-Y, B-X, B-Y Capacitance

Ω

120 175

R

ON

A-X, A-Y, B-X, B-Y
On-Resistance

VV- V+

VA, VB,

VX, V

Y

Analog-Signal Range

pC1.5 5QCharge Injection

ns

1 20

t

BBM

Break-Before-Make Time Delay

ns

110 175

t

TRANS

Transition Time

V1.6 2.4V

INH

IN Input Logic Threshold High

V0.8 1.6V

INL

IN Input Logic Threshold Low

µA-1 0.03 1

I

INH

,

I

INL

IN Input Current Logic High
or Low

UNITS

MIN TYP MAX

(Note 3)

SYMBOLPARAMETER

VA= VB= 3V, IA= IB= 1mA Ω

5 10

∆R

ON

A-X, A-Y, B-X, B-Y
On-Resistance Match (Note 5)

C, E V2.7 12V+Power-Supply Range
+25°C -1 1

VIN= 0V or V+

C, E

µA

-10 10

I+V+ Supply Current

POWER SUPPLY

ANALOG SWITCH

LOGIC INPUT

SWITCH DYNAMIC CHARACTERISTICS (Note 4)

POWER SUPPLY

MAX4528

Low-Voltage, Phase-Reversal
Analog Switch

4 _______________________________________________________________________________________

Note 3: The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
Note 4: Guaranteed by design.
Note 5: ∆R

ON

= ∆R

ON(MAX)

- ∆R

ON(MIN)

.

Note 6: Resistance flatness is defined as the difference between the maximum and the minimum value of on-resistance as measured

over the specified analog-signal range.

Note 7: Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at +25°C.
Note 8: Off isolation = 20log

10

[(VXor VY) / (VAor VB)], VAor VB= output, VAor VB= input to off switch.

Note 9: Leakage testing for single-supply operation guaranteed by testing with dual supplies.

ELECTRICAL CHARACTERISTICS: +3V Single Supply

(V+ = 2.7V to 3.6V, V- = 0V, V

INH

= 2.4V, V

INL

= 0.6V, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are at

T

A

= +25°C.)

V+ = 3V, VA= VB= 1.5V,
IA= IB= 0.1mA

(Note 4)

CL= 1.0nF, VAor VB= 0V, Figure 5

VA= 1.5V, VB= 0V, V+ = 3V,
V- = 0V, RL= 1kΩ, Figure 4

+25°C

VA= 1.5V, VB= 0V, V+ = 3V,
V- = 0V, RL= 1kΩ, Figure 3

V+ = 3V
V+ = 3V

V

IN_

= 0V or V+

CONDITIONS

C, E

+25°C

+25°C

+25°C

C, E
C, E

C, E

T

A

C, E 1000

C, E

C, E

C, E

500

V2.7 12V+, V-Power-Supply Range

+25°C -1 1

VIN= 0V or V+

C, E

µA

-10 10

I+V+ Supply Current

Ω

250 900

R

ON

A-X, A-Y, B-X, B-Y
On-Resistance

VV- V+

VA, VB,

VX, V

Y

Analog-Signal Range

pC1 5QCharge Injection

ns

2 150

t

BBM

Break-Before-Make Time Delay

ns

150 400

t

TRANS

Transition Time

V0.9 2.4V

INH

IN Input Logic Threshold High

V0.6 0.9V

INL

IN Input Logic Threshold Low

µA-1 0.03 1

I

INH

,

I

INL

IN Input Current Logic High
or Low

UNITS

MIN TYP MAX

(Note 3)

SYMBOLPARAMETER

ANALOG SWITCH

LOGIC INPUT

SWITCH DYNAMIC CHARACTERISTICS (Note 4)

POWER SUPPLY

MAX4528

Low-Voltage, Phase-Reversal

Analog Switch

_______________________________________________________________________________________

5

1000

10

-5 0-4 -3 -2 -1 1 2 3 4 5

ON-RESISTANCE vs. VA, V

B

(DUAL SUPPLIES)

MAX4528-01

VA, VB (V)

R

ON

(Ω)

100

V+ = 5V
V- = -5V

V+ = 1.2V
V- = -1.2V

V+ = 2V
V- = -2V

V+ = 2.7V
V- = -2.7V

V+ = 3.3V
V- = -3.3V

140

0

-5 2 5

100

MAX4528-02

VA, VB (V)

R

ON

(Ω)

-4 -3 -2 -1 0 1 3 4

80
60

120

20

40

ON-RESISTANCE vs.

V

A

, VB, AND TEMPERATURE

(DUAL SUPPLIES)

TA = +125°C

TA = +85°C

TA = +70°C

TA = -55°C

TA = +25°C

TA = -40°C

1000

10

0 1 2 3 4 5 6 7 8 9 10

100

MAX4528-03

V

A, VB

(V)

R

ON

(Ω)

ON-RESISTANCE vs. VA, VB

(SINGLE SUPPLY)

V- = 0V

V+ = 2V

V+ = 2.7V

V+ = 3.3V

V+ = 5V

V+ = 7.5V

V+ = 10V

200

0

0 5

140

MAX4528-04

VA, VB (V)

R

ON

(Ω)

1 2 3 4

120

80

100

180
160

20

40

60

ON-RESISTANCE vs.

V

A

, VB, AND TEMPERATURE

(SINGLE SUPPLY)

TA = -40°C

TA = -55°C

V+ = 5V
V- = 0V

TA = +25°C

TA = +125°C

TA = +70°C

TA = +85°C

4

-10
0 3 5

CHARGE INJECTION, CHARGE-

INJECTION MATCHING vs. V

A

, V

B

(+5V SUPPLY)

-6

-8

MAX4528-07

VA, VB (V)

Q (pC)

21

4

2

0

-2

-4

V+ = 5V
V- = 0V

Q

Y

Q

X

∆Q MATCHING

10,000

0.001

-55 -25 5 35 65 95 125

LEAKAGE vs. TEMPERATURE

0.01

MAX4528-05

TEMPERATURE (°C)

LEAKAGE (pA)

1

0.1

10

100

1000

10

-25

-5 -4 5

CHARGE INJECTION, CHARGE-

INJECTION MATCHING vs. V

A, VB

-20

5

MAX4528-06

V

A, VB

(V)

Q (pC)

-2 -1-3 20 1 3 4

0

-5

-10

-15

V+ = 5V
V- = 5V

∆Q MATCHING

Q

Y

Q

X

4

-3
0 3 5

CHARGE INJECTION, CHARGE-

INJECTION MATCHING vs. V

A

, V

B

(+3V SUPPLY)

-1

-2

MAX4528-08

VA, VB (V)

Q (pC)

21

4

3

2

1

0

V+ = 3V
V- = 0V

∆Q MATCHING

Q

X

Q

Y

250

200

150

50

100

0

MAX4528-09

SUPPLY VOLTAGE (V)

42

6

8 10

TRANSITION TIME

vs. SUPPLY VOLTAGE

t

TRANS

(ns)

SINGLE SUPPLY

DUAL SUPPLIES

__________________________________________Typical Operating Characteristics

(V+ = 5V, V- = -5V, GND = 0V, TA= +25°C, unless otherwise noted.)

MAX4528

Low-Voltage, Phase-Reversal
Analog Switch

6 _______________________________________________________________________________________

250

200

150

50

100

0

MAX4528-10

TEMPERATURE (°C)

TRANSITION TIME vs. TEMPERATURE

t

TRANS

(ns)

-55 -25 5 35 65 95 125

+2.7V SINGLE SUPPLY

±5V DUAL SUPPLIES

+5V SINGLE SUPPLY

1

10

-2

10

-1

10

-4

10

-3

10

-5

10

-9

10

-10

10

-8

10

-7

10

-6

10

-11

MAX4528-11

VIN (V)

0 1 2 3 4 5 6 789 10 11 12

SUPPLY CURRENT AND GROUND CURRENT

vs. INPUT VOLTAGE

I+, I

GND

(A)

V+ = 5V

V+ = 12V

V- = 0V

0

-120

0.1 10 1001 1000

FREQUENCY RESPONSE

-90

MAX4528-12

FREQUENCY (MHz)

LOSS (dB)

-60

-40

-20

-10

-100

-110

-80

-70

-50

-30

-150

-180

-60

PHASE (DEGREES)

30

90

150

180

-90

-120

-30

0

60

120

OFF ISOLATION

V+ = 5V
V- = -5V
50Ω IN AND OUT

ON LOSS

ON PHASE

100

0.01
10 100

TOTAL HARMONIC DISTORTION

vs. FREQUENCY

0.1

MAX4526/27 TOC-13

FREQUENCY (Hz)

THD (%)

1k 10k

20k

10

1

V+ = 5V
V- = -5V
600Ω IN AND OUT

3.0

2.5

2.0

1.0

0.5

1.5

0

MAX4528-14

V+ (V)

2 31 40 5 6 7 8 9 10 11 12

LOGIC-LEVEL THRESHOLD

vs. SUPPLY VOLTAGE

LOGIC-LEVEL THRESHOLD (V)

_________________________________Typical Operating Characteristics (continued)

(V+ = 5V, V- = -5V, GND = 0V, TA= +25°C, unless otherwise noted.)

MAX4528

Low-Voltage, Phase-Reversal

Analog Switch

_______________________________________________________________________________________ 7

_______________Detailed Description

The MAX4528 is a phase-reversal analog switch consist­ing of two normally open and two normally closed CMOS
analog switches arranged in a bridge configuration.
Analog signals are put into two input pins and taken out
of two output pins. A logic-level signal controls whether
the input signal is routed through normally or inverted. A
low-resistance DC path goes from inputs to outputs at all
times, yet isolation between the two signal paths is excel­lent. Analog signals range from V- to V+.

These parts are characterized and optimized with ±5V
supplies, and can operate from a single supply.

The MAX4528 is designed for DC and low-frequency­signal phase-reversal applications, such as chopper
amplifiers, modulator/demodulators, and self-zeroing or
self-calibrating circuits. Unlike conventional CMOS
switches externally wired in a bridge configuration,

both DC and AC symmetry are optimized with a small
8-pin configuration that allows simple board layout and
isolation of logic signals from analog signals.

Power-Supply Considerations

Overview

The MAX4528’s construction is typical of most CMOS
analog switches. It has three supply pins: V+, V-, and
GND. V+ and V- drive the internal CMOS switches and
set the analog-voltage limits on any switch. Reverse
ESD-protection diodes are internally connected
between each analog-signal pin and both V+ and V-.
One of these diodes conducts if any analog signal
exceeds V+ or V-.

Virtually all of the analog leakage current is through the
ESD diodes to V+ or V-. Although the ESD diodes on a
given signal pin are identical and therefore fairly well
balanced, they are reverse biased differently. Each is
biased by either V+ or V- and the analog signal. This
means their leakages vary as the signal varies. The

dif-

ference

in the two diode leakages from the signal path
to the V+ and V- pins constitutes the analog-signal-path
leakage current. All analog leakage current flows to the
supply terminals, not to the other switch terminal. This
explains how both sides of a given switch can show
leakage currents of either the same or opposite polarity.

There is no connection between the analog-signal
paths and GND. The analog-signal paths consist of an
N-channel and P-channel MOSFET with their sources
and drains paralleled and their gates driven out-of­phase to V+ and V- by the logic-level translators.

V+ and GND power the internal logic and logic-level
translator and set the input logic threshold. The logic­level translator converts the logic levels to switched V+
and V- signals to drive the analog switches’ gates. This
drive signal is the only connection between GND and
the analog supplies. V+ and V- have ESD-protection
diodes to GND. The logic-level input has ESD protec­tion to V+ and V-, but not to GND, so the logic signal
can go below GND (as low as V-) when bipolar sup­plies are used.

Increasing V- has no effect on the logic-level thresholds,
but it does increase the drive to the internal P-channel
switches, reducing overall switch on-resistance. V- also
sets the negative limit of the analog-signal voltage.

The logic-level input pin (IN) has ESD-protection diodes
to V+ and V- but not to GND, so it can be safely driven
to V+ and V-. The logic-level threshold (VIN) is CMOS/
TTL compatible when V+ is between 4.5V and 12V
(see

Typical Operating Characteristics

).

NAME FUNCTION

5 V-

Negative Analog Supply-Voltage
Input. Connect V- to GND for single­supply operation.

PIN

1 A

Analog-Switch Input Terminal A.
Connected to Y when IN is low; con­nected to X when IN is high.

6 Y Analog-Switch Output Terminal Y
7 X Analog-Switch Output Terminal X

2 B

Analog-Switch Input Terminal B.
Connected to X when IN is low; con­nected to Y when IN is high.

8 V+

Positive Analog/Digital Supply-Voltage
Input. Internally connected to sub­strate.

4 IN

Logic-Level Control Inputs (see

Truth

Table

)

3 GND

Ground. Connect GND to digital
ground. (Analog signals have no
ground reference; they are limited to
V+ and V-.)

Note:

Pins A, B, X, and Y are identical and interchangeable.
Any may be considered as an input or output; signals pass
equally well in either direction. However, AC symmetry is best
when A and B are the inputs and X and Y are the outputs.
Reduce AC balance in critical applications by using A and X or
A and Y as the input, and B and X or B and Y as the output.

_____________________Pin Description

MAX4528

Low-Voltage, Phase-Reversal
Analog Switch

8 _______________________________________________________________________________________

Bipolar Supplies

The MAX4528 operates with bipolar supplies between
±2.7V and ±6.0V. The V+ and V- supplies need not be
symmetrical, but their sum cannot exceed the 13V
absolute maximum rating (see

Absolute Maximum

Ratings

).

Single Supply

The MAX4528 operates from a single +2.7V to +12V
supply when V- is connected to GND. Observe all of
the bipolar precautions when operating from a single
supply.

__________Applications Information

The MAX4528 is designed for DC and low-frequency­signal phase-reversal applications. Both DC and AC
symmetry are optimized for use with ±5V supplies.

Signal Phase/Polarity Reversal

The MAX4528 can reverse the phase or polarity of a
pair of signals that are out-of-phase and balanced to
ground. This is done by routing signals through the
MAX4528 and, under control of IN, reversing the two
signals paths inside the switch before sending out to a
balanced output. Figure 1 shows a typical example.

The MAX4528 cannot reverse the phase or polarity
of a single grounded signal, as can be done with an
inverting op amp or transformer.

Balanced Modulator/Demodulator

The MAX4528 can be used as a balanced modulator/
demodulator at carrier frequencies up to 100kHz
(Figure 2). Higher frequencies are possible, but as fre­quency increases, small imbalances in the MAX4528’s
internal capacitance and resistance gradually impair
performance. Similarly, imbalances in external circuit
capacitance and resistance to GND reduce overall car­rier suppression.

The carrier is applied as a logic-level square wave to
IN. (Note that this voltage can go as negative as V-.)
For best carrier suppression, the power-supply volt­ages should be equal, the square wave should have a
precise 50% duty cycle, and both the input and output
signals should be symmetrical around ground. Bypass
V+ and V- to GND with 0.1µF ceramic capacitors, as
close to the IC pins as possible. In critical applications,
carrier suppression can be optimized by trimming duty
cycle, DC bias around GND, or external source and
load capacitance.

In signal lines, balancing both capacitance and resis­tance to GND produces the best carrier suppression.

Transformer coupling of input and output signals
provides the best isolation and carrier suppression.
Transformers can also provide signal filtering, imped­ance matching, or low-noise voltage gain. Use a
center-tapped transformer or high-resistance voltage
divider to provide a DC path to GND on either the input
or output signal. This ensures a DC path to GND and
symmetrical operation of the internal switches.

Y

IN

LOGIC LOW

GND

X

B

A

MAX4528 MAX4528

TRUTH TABLE

IN

O
1

A

Y
X

B

X
Y

V-

INPUTS

V+

V+

V-

OUTPUTS

Y

IN

LOGIC HIGH

X

B

A

GND V-

V-

INPUTS

V+

V+

OUTPUTS

Figure 1. Typical Application Circuits

MAX4528

Low-Voltage, Phase-Reversal

Analog Switch

_______________________________________________________________________________________ 9

50%

0V

V

IN

V

OUT

0V

V

B

V

A

V-

X

B

A +3V

-3V

V-

300Ω

GND

V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.

IN

V+

V

IN

50Ω

90%

90%

t

TRANS

t

TRANS

35pF

V+

V+

V

OUT

MAX4528

Figure 3. Address Transition Time

A

TIME WAVEFORMS

LOGIC

(CARRIER)

B

X

Y

X-Y

(OUTPUT)

OUTPUT SPECTRUM

FREQUENCY

AMPLITUDE

LOWER

SIDEBAND

UPPER
SIDEBAND

SUPPRESSED CARRIER

MODULATOR/DEMODULATOR CIRCUIT

LOGIC (CARRIER)

OUTPUT

IN

B

A

X

Y

GND

V-

V-

V+

V+

MAX4528

Figure 2. Balanced Modulator/Demodulator

______________________________________________Test Circuits/Timing Diagrams

MAX4528

Low-Voltage, Phase-Reversal
Analog Switch

10 ______________________________________________________________________________________

tF < 5ns
t

R

< 5ns

V-

X OR Y

B

A +3V

V-

300Ω

50Ω

GND

V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.

IN

V

IN

t

BBM

35pF

V+

V+

V

OUT

MAX4528

0V

0V

90%

50%

V

IN

V

OUT

V+

Figure 4. Break-Before-Make Interval

V-

X OR Y

A OR B

B OR A N.C.

V

A

OR V

B

∆V

OUT

V

OUT

V

IN

V+

0V

V-

GND

∆V

OUT

IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER

ERROR Q WHEN THE CHANNEL TURNS OFF.

V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.

IN

V

IN

C

L

1000pF

50Ω

V+

V+

V

OUT

MAX4528

Q = ∆V

OUT

x C

L

Figure 5. Charge Injection

_________________________________Test Circuits/Timing Diagrams (continued)

MAX4528

Low-Voltage, Phase-Reversal

Analog Switch

______________________________________________________________________________________ 11

V-

Y

X

B

A

V-

GND

IN

V+

V+

MAX4528

SWITCH

SELECT

V+

1MHz

CAPACITANCE

ANALYZER

Figure 6. A, B, X, Y Capacitance

V-

X, Y

A, B

V-

GND

MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AT SOCKET TERMINALS.
OFF ISOLATION IS MEASURED BETWEEN A, B AND "OFF" X, Y TERMINAL.
ON LOSS IS MEASURED BETWEEN A, B AND "ON" X, Y TERMINAL.
SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
V- IS CONNECTED TO GND (0V) FOR SINGLE-SUPPLY OPERATION.

V

OUT

V

IN

MEAS.

REF

50Ω

50Ω 50Ω

50Ω

IN

10nF

V+

10nF

V+

MAX4528

NETWORK
ANALYZER

OFF ISOLATION = 20log

V

OUT

V

IN

ON LOSS = 20log

V

OUT

V

IN

SWITCH

SELECT

V+

Figure 7. Off Isolation and On Loss

_________________________________Test Circuits/Timing Diagrams (continued)

8LUMAXD.EPS

MAX4528

Low-Voltage, Phase-Reversal
Analog Switch

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

© 1998 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

________________________________________________________Package Information

____________________________________________________________Chip Topography

TRANSISTOR COUNT: 141
SUBSTRATE IS INTERNALLY CONNECTED TO V+

0.054"

(1.37mm)

0.038

(0.97mm)

N

GND

B

V-

Y

X

V+

A