*

Maxim reserves the right to ship ceramic packages in lieu of CERDIP packages.

**

True RMS-to-DC Converters

PART

MX536ASH

-55°C to +125°C

TEMP. RANGE

PIN-PACKAGE

10 TO-100

MX536ASQ*

-55°C to +125°C

14 CERDIP

MX636JC/D

MX636JCWE

MX636JD

0°C to +70°C

0°C to +70°C

0°C to +70°C

Dice**

16 Wide SO

14 Ceramic

MX636JH

0°C to +70°C

10 TO-100

Pin Configurations (continued)

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

TOP VIEW

MX536A

MX636

SO

N.C.

N.C.

N.C.

COMMON

N.C.

N.C.

dB

BUF OUT

BUF IN

N.C.

14

13

12

11

10

9

8

1

2

3

4

5

6

7

ABSOLUTE

VALUE

SQUARER

DIVIDER

CURRENT

MIRROR

BUF

R9

500k

0dB SET

R13

500

Ω

LIN

SCALE

dB

SCALE

R15

1M

R14

50k

R12

1k

R11

26k

R10

20k

MAX130

C4

2.2

µF

C3

0.02

µF

6.8

µF

R6

1M

R5

47k

1W

10%

R7

20k

D2

IN4148

D1

IN4148

2V

20V

200V

R1

9M

R2

900k

R3

90k

R4

10k

COM

200mV

C7

6.8

µF

LIN

LIN

dB

LIN

1N4148

dB

dB

D3

D4

D5

C6

0.01

µF

REF HI

COM

REF LO

IN HI

IN LO

DIGIT

LCD

DISPLAY

ADC

V-

V+

9V

BATTERY

MX636

10k

10k

Figure 13. Portable High-Z Input RMS DPM and dB Meter

Typical Operating

________________Circuits (continued)

8

9

10

1

2

3

4

5

6

7

ABSOLUTE

VALUE

SQUARER

DIVIDER

CURRENT

MIRROR

BUF

___________________________________________Ordering Information (continued)

PART

TEMP. RANGE

PIN-PACKAGE

MX636JQ*

MX636KCWE

0°C to +70°C

0°C to +70°C

14 CERDIP

16 Wide SO

MX636KD

MX636KH

0°C to +70°C

0°C to +70°C

14 Ceramic

10 TO-100

MX636KN

0°C to +70°C

14 Plastic DIP

MX636KQ*

0°C to +70°C

14 CERDIP

MX636JN

0°C to +70°C

14 Plastic DIP

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.

© 1998 Maxim Integrated Products

Printed USA

is a registered trademark of Maxim Integrated Products.