ZABG6002 datasheet(9/12 Pages) DIODES

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ZABG6002

Document number: DS32078 Rev. 1 - 2

9 of 12

www.diodes.com

May 2010

A Product Line of

Diodes Incorporated

General Operation

In both modes the RCAL 1 and RCAL 2 pins can also be used as logic inputs. If set to a logic high state (>3.0V), the

associated FET bias stages programmed for LNA use (2V drains) are disabled by driving gate pins to -2,5V and

switching drain pins open-circuit. This feature can be used as part of a power management system that turns off

any unwanted stages in a multi input receiver.

The ZABG6002 includes a switched capacitor DC-DC converter that is used to generate the negative supply

required to bias depletion mode FETs used in common source circuit configuration as shown above. This converter

uses two external capacitors, CNB the charge transfer capacitor and CSUB the output reservoir capacitor. The circuit

provides a regulated -2.5V supply both for gate driver use and for external use if required (for extra discrete bias

stages, mixer bias, local oscillator bias etc.). The -2.5V supply is available from the CSUB pin.

If any bias stages are not required, their gate and drain pins may be left open circuit. If all bias stages associated

with an RCAL resistor are not required, then this resistor may be omitted.

It must be noted that the exposed pad of the QFN package must be either left floating or connected to Csub.

Ordering Information

Device

Package

Reel size (inches)

Tape width (mm)

Quantity per reel

ZABG6002JB20TC

QFN2044

3,000

ZABG6002Q20TC

QSOP20

2,500

Marking Information

Part Name

Pin 1

ZABG6002

YYWW

Date Code

ZABG

6002

YYWW

Pin 1

Part Name

Date Code

Year/Week

QFN2044

QSOP20

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