MAXIM MAX2620 Technical data

MAX2620

1

V

CC

1

TANK

FDBK

SHDN

2

3

4

8

OUT

V

CC

2

GND

OUT

7

6

5

V

CC

V

CC

V

CC

V

CC

BIAS

SUPPLY

C17

1.5pF

C5

C6

1000pF

1000pF

1000pF

10Ω

CERAMIC

RESONATOR

L1

V

TUNE

900MHz BAND OSCILLATOR

1kΩ

D1

ALPHA

SMV1204-34

1.5pF 1.5pF

51Ω

10nH

C3

2.7pF

C4
1pF

0.1µF

1000pF

OUT TO SYNTHESIZER

OUT TO MIXER

SHDN

MAX2620

10MHz to 1050MHz Integrated

RF Oscillator with Buffered Outputs

________________________________________________________________ Maxim Integrated Products 1

19-1248; Rev 2; 2/02

EVALUATION KIT

AVAILABLE

_________________General Description

The MAX2620 combines a low-noise oscillator with two
output buffers in a low-cost, plastic surface-mount,
ultra-small µMAX package. This device integrates func­tions typically achieved with discrete components. The
oscillator exhibits low-phase noise when properly
mated with an external varactor-tuned resonant tank
circuit. Two buffered outputs are provided for driving
mixers or prescalers. The buffers provide load isolation
to the oscillator and prevent frequency pulling due to
load-impedance changes. Power consumption is typi­cally just 27mW in operating mode (VCC= 3.0V), and
drops to less than 0.3µW in standby mode. The MAX2620
operates from a single +2.7V to +5.25V supply.

________________________Applications

Analog Cellular Phones

Digital Cellular Phones

900MHz Cordless Phones

900MHz ISM-Band Applications

Land Mobile Radio

Narrowband PCS (NPCS)

____________________________Features

♦ Low-Phase-Noise Oscillator: -110dBc/Hz

(25kHz offset from carrier) Attainable

♦ Operates from Single +2.7V to +5.25V Supply
♦ Low-Cost Silicon Bipolar Design
♦ Two Output Buffers Provide Load Isolation
♦ Insensitive to Supply Variations
♦ Low, 27mW Power Consumption (V

CC

= 3.0V)

♦ Low-Current Shutdown Mode: 0.1µA (typ)

PART

MAX2620EUA -40°C to +85°C

TEMP RANGE PIN-PACKAGE

8 µMAX

_______________Ordering Information

MAX2620E/D -40°C to +85°C Dice*

Pin Configuration appears at end of data sheet.

*Dice are tested at T

A

= +25°C, DC parameters only.

____________________________________________________Typical Operating Circuit

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.

MAX2620

10MHz to 1050MHz Integrated
RF Oscillator with Buffered Outputs

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC1, VCC2 = +2.7V to +5.25V, FDBK = open, TANK = open, OUT and OUT connected to VCCthrough 50Ω, SHDN = 2V,
T

A

= -40°C to +85°C, unless otherwise noted. Typical values measured at VCC1 = VCC2 = 3.0V, TA= +25°C.) (Note 1)

AC ELECTRICAL CHARACTERISTICS

(Test Circuit of Figure 1, VCC= +3.0V, SHDN = VCC, Z

LOAD

= Z

SOURCE

= 50Ω, PIN= -20dBm (50Ω), f

TEST

= 900MHz,

T

A

= +25°C, unless otherwise noted.)

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.

VCC1, VCC2 to GND .................................................-0.3V to +6V

TANK, SHDN to GND .................................-0.3V to (V

CC

+ 0.3V)

OUT, OUT to GND...........................(V

CC

- 0.6V) to (VCC+ 0.3V)

FDBK to GND ..................................(V

CC

- 2.0V) to (VCC+ 0.3V)

Continuous Power Dissipation (T

A

= +70°C)

µMAX (derate 5.7mW/°C above +70°C) .....................457mW

Operating Temperature Range

MAX2620EUA .................................................-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +165°C

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

µA

0.1 2

SHDN = 0.6V

Shutdown Current

mA9.0 12.5

UNITSMIN TYP MAXCONDITIONSPARAMETER

Supply Current

V2.0Shutdown Input Voltage High

V0.6Shutdown Input Voltage Low

µA5.5 20

SHDN = 2.0V

Shutdown Bias Current High

µA0.5

SHDN = 0.6V

Shutdown Bias Current Low

MHz10 1050TA= -40°C to +85°C (Note 2)

UNITSMIN TYP MAXCONDITIONSPARAMETER

Frequency Range

dB50

OUT or OUT to TANK; OUT, OUT driven at P = -20dBm

Reverse Isolation

dB33

OUT to OUT

Output Isolation

Note 2: Guaranteed by design and characterization at 10MHz, 650MHz, 900MHz, and 1050MHz. Over this frequency range, the

magnitude of the negative real impedance measured at TANK is greater than one-tenth the magnitude of the reactive
impedances at TANK. This implies proper oscillator start-up when using an external resonator tank circuit with Q > 10. C3
and C4 must be tuned for operation at the desired frequency.

Note 1: Specifications are production tested and guaranteed at T

A

= +25°C and TA= +85°C. Specifications are guaranteed by

design and characterization at T

A

= -40°C.

MAX2620

10MHz to 1050MHz Integrated

RF Oscillator with Buffered Outputs

_______________________________________________________________________________________ 3

TYPICAL OPERATING CIRCUIT PERFORMANCE—900MHz Band Ceramic­Resonator-Based Tank

(Typical Operating Circuit, VCC= +3.0V, V

TUNE

= 1.5V, SHDN = V

CC,

load at OUT = 50Ω, load at OUT = 50Ω, L1 = coaxial ceramic

resonator: Trans-Tech SR8800LPQ1357BY, C6 = 1pF, T

A

= +25°C, unless otherwise noted.)

-110

SSB at ∆f = 25kHz

MHz±13V

TUNE

= 0.5V to 3.0V

UNITSMIN TYP MAXCONDITIONSPARAMETER

Tuning Range

dBc/Hz

-132

SSB at ∆f = 300kHz

Phase Noise

-6 -2At OUT (Note 2)

dBc-29Second-Harmonic Output

MHz/V11Average Tuning Gain

kHz

P-P

163VSWR = 1.75:1, all phasesLoad Pull

kHz/V71VCCstepped from 3V to 4VSupply Pushing

Note 3: Guaranteed by design and characterization.

dBm/Hz-147fO± >10MHzNoise Power

-11 -8

At OUT, per test circuit of Figure 1; TA= -40°C to +85°C
(Note 3)

dBm

-16 -12.5

At OUT (Note 3)

Output Power (Single-Ended)

TYPICAL OPERATING CIRCUIT PERFORMANCE—900MHz Band Inductor-Based Tank

(Typical Operating Circuit, VCC= +3.0V, V

TUNE

= 1.5V, SHDN = V

CC,

load at OUT = 50Ω, load at OUT = 50Ω, L1 = 5nH (Coilcraft

A02T), C6 = 1.5pF, T

A

= +25°C, unless otherwise noted.)

MHz/V13Average Tuning Gain

dBm/Hz-147fO± >10MHzNoise Power

kHz

P-P

340VSWR = 1.75:1, all phase anglesLoad Pull

kHz/V150VCCstepped from 3V to 4VSupply Pushing

-11 -8

At OUT, per test circuit of Figure 1; TA= -40°C to +85°C
(Note 3)

dBm

-16 -12.5

At OUT (Note 3)

Output Power (single-ended)

-107

SSB at ∆f = 25kHz

MHz±15V

TUNE

= 0.5V to 3.0V

UNITSMIN TYP MAXCONDITIONSPARAMETER

Tuning Range

dBc/Hz

-127

SSB at ∆f = 300kHz

Phase Noise

-6 -2At OUT (Note 2)

dBc-29Second-Harmonic Output

Note 3: Guaranteed by design and characterization.

MAX2620

10MHz to 1050MHz Integrated
RF Oscillator with Buffered Outputs

4 _______________________________________________________________________________________

__________________________________________Typical Operating Characteristics

(Test Circuit of Figure 1, VCC= +3.0V, SHDN = VCC, Z

LOAD

= Z

SOURCE

= 50Ω, PIN= -20dBm/50Ω, f

TEST

= 900MHz, TA= +25°C,

unless otherwise noted.)

-5

B

C

0

A:
B:

C:

10MHz BAND CIRCUIT
NOT CHARACTERIZED FOR THIS FREQUENCY BAND.
EXPECTED PERFORMANCE SHOWN.
900MHz BAND CIRCUIT

200 400 600 800 1000 1200

OUT OUTPUT POWER vs. FREQUENCY

OVER V

CC

AND TEMPERATURE

-7

MAX2620-01

FREQUENCY (MHz)

POWER (dBm)

-9

-6

-8

TA = +85°C
T

A

= +25°C

T

A

= -40°C

V

CC

= 5.25V

V

CC

= 5.25V

V

CC

= 2.7V

V

CC

= 2.7V

A

-13.0

-13.5

-12.0

-12.5

-11.0

-11.5

0 400200 600 800 1000 1200

OUT OUTPUT POWER vs. FREQUENCY

OVER V

CC

AND TEMPERATURE

MAX2620-02

FREQUENCY (MHz)

POWER (dBm)

V

CC

= 5.25V

V

CC

= 2.7V

TA = +85°C

TA = +25°C

TA = -40°C

FREQUENCY

(MHz)

REAL COMPONENT

(R in Ω)

IMAGINARY COMPONENT

(X in Ω)

250 106 163

350 68 102

450 60 96

550 35 79

1050 6.5 22.7

Table 1. Recommended Load Impedance at OUT or OUT for
Optimum Power Transfer

850

650 17.5 62.3

750 17.2 50.6

10.9 33.1

950 7.3 26.3

MAX2620

10MHz to 1050MHz Integrated

RF Oscillator with Buffered Outputs

_______________________________________________________________________________________ 5

_____________________________Typical Operating Characteristics (continued)

(Typical Operating Circuit, VCC= +3.0V, V

TUNE

= 1.5V, SHDN = V

CC,

load at OUT = 50Ω, load at OUT = 50Ω, L1 = coaxial ceramic

resonator: Trans-Tech SR8800LPQ1357BY, C6 = 1pF, T

A

= +25°C, unless otherwise noted.)

REVERSE ISOLATION vs. FREQUENCY

VCC = 2.7V TO 5.25V

0

C3, C4 REMOVED

-10

-20

-30

-40

-50

-60

REVERSE ISOLATION (dB)

-70

-80

-90
50 250 450 650 850 1050

FREQUENCY (MHz)

10MHz BAND CIRCUIT

TYPICAL 1/S11 vs. FREQUENCY

MEASURED AT TEST PORT

15MHz
28 + j79.8

10MHz

63.6 + j121.5

5MHz
262 + j261

MAX2620-03

MAX2620-05

TYPICAL 1/S11 vs. FREQUENCY

10.0

9.5
VCC = 5.25V

9.0

8.5

8.0

SUPPLY CURRENT (mA)

7.5

900MHz BAND CIRCUIT*

MEASURED AT TEST PORT

1050MHz
21 + j78

900MHz
36 + j90

800MHz
49 + j105

650MHz
84 + j142

*SEE FIGURE 1

SUPPLY CURRENT

vs. TEMPERATURE

VCC = 2.7V

MAX2620-04

MAX2620-06

C3 = C4 = 270pF
L3 = 10µH
C2 = C10 = C13 = 0.01µF

7.0

-20 0 20 40 60 80 100

-40
TEMPERATURE (°C)

MAX2620

10MHz to 1050MHz Integrated
RF Oscillator with Buffered Outputs

6 _______________________________________________________________________________________

_______________________________________________________________Pin Description

NAME FUNCTIONPIN

3 FDBK

Oscillator Feedback Circuit Connection. Connecting capacitors of the appropriate value between FDBK and
TANK and between FDBK and GND tunes the oscillator’s reflection gain (negative resistance) to peak at the
desired oscillation frequency. Refer to the Applications Information section.

2 TANK Oscillator Tank Circuit Connection. Refer to the Applications Information section.

1 VCC1

Oscillator DC Supply Voltage. Decouple VCC1 with 1000pF capacitor to ground. Use a capacitor with low
series inductance (size 0805 or smaller). Further power-supply decoupling can be achieved by adding a
10Ω resistor in series from VCC1 to the supply. Proper power-supply decoupling is critical to the low noise
and spurious performance of any oscillator.

8 OUT

Open-Collector Output Buffer. Requires external pull-up to the voltage supply. Pull-up can be resistor,
choke, or inductor (which is part of a matching network). The matching-circuit approach provides the high­est-power output and greatest efficiency. Refer to Table 1 and the Applications Information section. OUT
can be used with OUT in a differential output configuration.

7 VCC2

Output Buffer DC Supply Voltage. Decouple VCC2 with a 1000pF capacitor to ground. Use a capacitor with
low series inductance (size 0805 or smaller).

6 GND Ground Connection. Provide a low-inductance connection to the circuit ground plane.

5

OUT

Open-Collector Output Buffer (complement). Requires external pull-up to the voltage supply. Pull-up can be
resistor, choke, or inductor (which is part of a matching network). The matching-circuit approach provides
the highest-power output and greatest efficiency. Refer to Table 1 and the Applications Information section.
OUT can be used with OUT in a differential output configuration.

4

SHDN

Logic-Controlled Input. A low level turns off the entire circuitry such that the IC will draw only leakage current
at its supply pins. This is a high-impedance input.

_____________________________Typical Operating Characteristics (continued)

(Typical Operating Circuit, VCC= +3.0V, V

TUNE

= 1.5V, SHDN = V

CC,

load at OUT = 50Ω, load at OUT = 50Ω, L1 = coaxial ceramic

resonator: Trans-Tech SR8800LPQ1357BY, C6 = 1pF, T

A

= +25°C, unless otherwise noted.)

-114

-112

-110

-108

-106

-104

-40 -20 0 20 40 60 80

PHASE NOISE vs. TEMPERATURE

MAX2620-07

TEMPERATURE (°C)

SSB PHASE NOISE (dBc/Hz)

SSB @ ∆f = 25kHz

L1 = 5nH INDUCTOR
C6 = 1.5pF

L1 = COAXIAL CERAMIC RESONATOR
(TRANS-TECH SR8800LPQ1357BY)
C6 = 1pF

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

0 1.3 2.6 3.9 5.2 6.5

OUTPUT SPECTRUM

FUNDAMENTAL NORMALIZED TO 0dB

MAX2620-08

FREQUENCY (GHz)

RELATIVE OUTPUT LEVEL (dBc)

-150

-140

-130

-120

-110

-100

-90

-80

-70

-60

-50

-40

0.1 10 1000100

SINGLE SIDEBAND PHASE NOISE

MAX2620-09

OFFSET FREQUENCY (kHz)

SSB PHASE NOISE (dBc/Hz)

1

L1 = 5nH INDUCTOR
C6 = 1.5pF

L1 = COAXIAL
CERAMIC RESONATOR
(TRANS-TECH
SR8800LPQ1357BY)
C6 = 1pF

MAX2620

10MHz to 1050MHz Integrated

RF Oscillator with Buffered Outputs

_______________________________________________________________________________________ 7

_______________Detailed Description

Oscillator

The oscillator is a common-collector, negative­resistance type that uses the IC’s internal parasitic ele­ments to create a negative resistance at the base­emitter port. The transistor oscillator has been opti­mized for low-noise operation. Base and emitter leads
are provided as external connections for a feedback
capacitor and resonator. A resonant circuit, tuned to
the appropriate frequency and connected to the base
lead, will cause oscillation. Varactor diodes may be
used in the resonant circuit to create a voltage-con­trolled oscillator (VCO). The oscillator is internally
biased to an optimal operating point, and the base and
emitter leads need to be capacitively coupled due to
the bias voltages present.

Output Buffers

The output buffers (OUT and OUT) are an open­collector, differential-pair configuration and provide
load isolation to the oscillator. The outputs can be used
differentially to drive an integrated circuit mixer.
Alternatively, isolation is provided between the buffer
outputs when one output drives a mixer (either upcon­version or downconversion) and the other output drives
a prescaler. The isolation in this configuration prevents
prescaler noise from corrupting the oscillator signal’s
spectral purity.

A logic-controlled SHDN pin turns off all bias to the IC
when pulled low.

__________Applications Information

Design Principles

At the frequency of interest, the MAX2620 portion of
Figure 2 shows the one-port circuit model for the TANK
pin (test port in Figure 1).

For the circuit to oscillate at a desired frequency, the res­onant tank circuit connected to TANK must present an
impedance that is a complement to the network
(Figure 2). This resonant tank circuit must have a positive
real component that is a maximum of one-half the magni­tude of the negative real part of the oscillator device, as
well as a reactive component that is opposite in sign to
the reactive component of the oscillator device.

Figure 2. Simplified Oscillator Circuit Model

MAX2620

1

2

V

CC

1

TANK

FDBK

SHDN

3

4

8

OUT

V

CC

2

OUT

GND

7

6

5

V

CC

V

CC

V

CC

VCC

V

CC

TEST PORT

BIAS

SUPPLY

C13*

1000pF

C2*

1000pF

ON

OFF

1000pF

1000pF

1000pF

10Ω

10Ω

L3*

220nH

51Ω

C3*

2.7pF

C4*
1pF

1000pF

1000pF

C10*

1000pF

Z

O

= 50Ω

*AT 10MHz, CHANGE TO:
C3 = C4 = 270pF
L3 = 10µH
C2 = C10 = C13 = 0.01µF

Z

O

= 50Ω

OUT

OUT

Figure 1. 900MHz Test Circuit

TANK

-jX

T

OSCILLATOR
DEVICE

jX

TIMES R

L

LESS THAN 1/2

L

RESONANT
TANK

-R

n

MAX2620

10MHz to 1050MHz Integrated
RF Oscillator with Buffered Outputs

8 _______________________________________________________________________________________

Keeping the resonant tank circuit’s real component less
than one-half the magnitude of the negative real com­ponent ensures that oscillations will start. After start-up,
the oscillator’s negative resistance decreases, primarily
due to gain compression, and reaches equilibrium with
the real component (the circuit losses) in the resonant
tank circuit. Making the resonant tank circuit reactance
tunable (e.g., through use of a varactor diode) allows
for tuneability of the oscillation frequency, as long as
the oscillator exhibits negative resistance over the
desired tuning range. See Figures 3 and 4.

The negative resistance of the MAX2620 TANK pin can
be optimized at the desired oscillator frequency by
proper selection of feedback capacitors C3 and C4.
For example, the one-port characteristics of the device
are given as a plot of 1/S11 in the Typical Operating
Characteristics. 1/S11 is used because it maps inside
the unit circle Smith chart when the device exhibits
negative resistance (reflection gain).

Figure 3. 10MHz VCO LC Resonator

V

TUNE

C5

150pF

1kΩ

C17
33pF

C6
33pH

D1

L1

2.2µH

C3
270pF

C4
270pF

V

CC

10Ω

1000pF

1

VCC1

MAX2620

2

TANK

3

FDBK

4

SHDN

OUT

V

GND

OUT

CC

1000pF

2

10µH

8

7

6

5

V

CC

27pF

0.01µF

V

CC

1000pF

0.01µF

OUT TO
MIXER

OUT TO
SYNTHESIZER

SHDN

D1 = SMV1200-155 DUAL VARACTOR

51Ω

1000pF

V

CC

MAX2620

10MHz to 1050MHz Integrated

RF Oscillator with Buffered Outputs

_______________________________________________________________________________________ 9

Sample Calculation

According to the electrical model shown in Figure 5, the
resonance frequency can be calculated as:

[Equation 1]

R

n

, the negative real impedance, is set by C3 and C4

and is approximately:

[Equation 2]

where gm= 18mS.

Using the circuit model of Figure 5, the following exam­ple describes the design of an oscillator centered at
900MHz.

Choose: L1 = 5nH ±10%

Q = 140

Calculate: R

p

= Q ×2π×f ×L1

Using Equation 1, solve for varactor capacitance (CD1).
CD1is the capacitance of the varactor when the volt­age applied to the varactor is approximately at half­supply (the center of the varactor’s capacitance range).
Assume the following values:

C

STRAY

= 2.7pF, C17 = 1.5pF, C6 = 1.5pF, C5 = 1.5pF,

C03= 2.4pF, C04= 2.4pF, C3 = 2.7pF, and C4 = 1pF

The value of C

STRAY

is based on approximate perfor­mance of the MAX2620 EV kit. Values of C3 and C4 are
chosen to minimize Rn(Equation 2) while not loading
the resonant circuit with excessive capacitance. C

03

and C04are parasitic capacitors.

The varactor’s capacitance range should allow for the
desired tuning range. Across the tuning frequency
range, ensure that Rs< 1/2 Rn.

The MAX2620’s oscillator is optimized for low-phase­noise operation. Achieving lowest phase-noise charac­teristics requires the use of high-Q (quality factor)

components such as ceramic transmission-line type

Figure 4. 10MHz Crystal Oscillator

V

CC

10Ω

0.01µF

1

VCC1

30pF

120pF

120pF

SHDN

X = STATEK AT-3004 10MHz
FUNDAMENTAL MODE CRYSTAL SURFACE MOUNT

= 20pF

C

LOAD

2

TANK

MAX2620

3

FDBK

4

SHDN

OUT

V

GND

OUT

V

CC

0.01µF

10µH

8

7

2

CC

6

5

51Ω

27pF

0.01µF

V

CC

0.01µF

0.01µF

0.01µF

V

CC

OUT

OUT

f

=

O

2 L1 C +

π

where C

=

n




STRAY



C + C C + C

()()

303404

C + C + C + C

303404

1

C x C

17 D1

C + C

17 D1

C

++

6

C x C

5n

C + C

5n

Rg



=



nm



2





1

ππ

fC C fC C

()

303 404











+

2

()







1




+







MAX2620

10MHz to 1050MHz Integrated
RF Oscillator with Buffered Outputs

10 ______________________________________________________________________________________

resonators or high-Q inductors. Also, keep C5 and C17
(see the Typical Operating Circuit) as small a value as
possible while still maintaining desired frequency and
tuning range to maximize loaded Q.

There are many good references on the topic of oscilla­tor design. An excellent reference is “The Oscillator
as a Reflection Amplifier, an Intuitive Approach to
Oscillator Design,” by John W. Boyles, Microwave
Journal, June 1986, pp. 83–98.

Output Matching Configuration

Both of the MAX2620’s outputs (OUT and OUT) are
open collectors. They need to be pulled up to the sup­ply by external components. An easy approach to this
pull-up is a resistor. A 50Ω resistor value would inher­ently match the output to a 50Ω system. The Typical
Operating Circuit shows OUT configured this way.
Alternatively, a choke pullup (Figure 1), yields greater
output power (approximately -8dBm at 900MHz).

When maximum power is required, use an inductor as
the supply pull-up, and match the inductor’s output
impedance to the desired system impedance. Table 1
in the Typical Operating Characteristics shows recom­mended load impedance presented to OUT and OUT

for maximum power transfer. Using this data and stan­dard matching-network synthesis techniques, a match­ing network can be constructed that will optimize power
output into most load impedances. The value of the
inductor used for pullup should be used in the synthe­sis of the matching network.

__________________Pin Configuration

Figure 5. Electrical Model of MAX2620 Circuit

+ jX

R

S

C

PC BOARD
PARASITICS

STRAY

C17

C

D1

VARACTOR+
COUPLING

L1

R

p

INDUCTOR
OR
CERAMIC
RESONATOR

S

C5

C6

TEST PORT
MEASUREMENT
(FIGURE 1)

MAX2620

C

C3

C4

03

2.4pF

C

04

2.4pF

R

n

RESONANT TANK MODEL

MAX2620 PACKAGE MODEL

TOP VIEW

1

V

1

CC

2

TANK

FDBK

SHDN

3

4

MAX2620

µMAX

8

OUT

2

V

7

CC

GND

6

5

OUT

MAX2620

10MHz to 1050MHz Integrated

RF Oscillator with Buffered Outputs

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.

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11

© 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

Package Information

(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.)

0.6±0.1

0.6±0.1

8

b

E H

A1

A

ÿ 0.50±0.1

1

D

TOP VIEW

A2

e

FRONT VIEW

4X S

BOTTOM VIEW

c

L

SIDE VIEW

8

1

DIM

A
A1
A2

b

c

D

e

E

H

L

α

S

INCHES

MIN

-

0.002

0.030

0.010

0.005

0.116

0.0256 BSC

0.116

0.188

0.016
0∞

0.0207 BSC

MAX

0.043

0.006

0.037

0.014

0.007

0.120

0.120

0.198

0.026
6∞

MILLIMETERS

MIN

0.05 0.15

0.25 0.36

0.13 0.18

2.95 3.05

2.95 3.05

4.78

0.41

MAX

- 1.10

0.950.75

0.65 BSC

5.03

0.66
6∞0∞

0.5250 BSC

α

8LUMAXD.EPS

PROPRIETARY INFORMATION

TITLE:

PACKAGE OUTLINE, 8L uMAX/uSOP

REV.DOCUMENT CONTROL NO.APPROVAL

21-0036

1

J

1