[CQ-236B]

016009490-E-00

2016/07

- 2 -

Circuit Blocks

Table 1. Explanation of circuit blocks

Circuit Block

Function

Hall Sensor

Hall element which detects magnetic flux density generated from the measured current.

Amplifier

Amplifier of Hall element

’s output.

Buffer

applied to the primary conductor.

Compensation

Compensation circuit which adjusts the temperature drifts of sensitivity and offset voltage.

Bias Unit

Drive circuit for Hall element.

EEPROM Unit

Non-volatile memory for setting adjustment parameters. The parameters are adjusted before

the shipment.

Magnetic Core

Magnetic core which gathers the magnetic flux density to the Hall element.

Typical Output Characteristics

Figure 2. Typical output characteristics of CQ-236B

Pin/Function

Table 2. Pin-out description

No.

Name

I/O

Description

1

DATA_IO

-

Test pin (connect to ground)

2

VDD

-

Power supply pin (5V)

3

VSS

-

Ground pin (0V)

4

VOUT

O

Analog output pin

5

SCLK

-

Test pin (connect to ground)

6

P

I

Primary current pin (+)

7

N

I

Primary current pin (

−)

Figure 3. Pin-out diagram

CQ-236B

(Top View)

6

7

1

3

2

4

5

CQ-236B

(Top View)

←

←

P

N

0

0.5 V

P→N