X9470 datasheet(7/25 Pages) XICOR

Part #	X9470

Description	RF Power Amplifier (PA) Bias Controller

PDF	25 Pages

Scroll/Zoom	100%

Manufacturer	XICOR [Xicor Inc.]

Direct Link	http://www.xicor.com

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REV 11.16 3/20/03

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Preliminary Information

X9470

BIAS ADJUSTMENT CIRCUIT BLOCK

A.C. OPERATING CHARACTERISTICS

Recommended Operating Conditions: (Vcc, V+ = 4.75 to 5.25V; Vsense+, Vsense- = 26V; TA = -40°C to +85°C, unless

otherwise noted.)

A.C. TIMING

Note:

(11) MI in the A.C. timing diagram refers to the minimum incremental change in the VBIAS output due to a change in the wiper position.

Symbol

Parameter

Limits

Units

Min.

Typ.(9)

Max.

tCl

CS to SCL Setup

100

tlD

Vsense Change to

INC/DEC Change

µs

tlL

SCL LOW Period

1.5

µs

tlH

SCL HIGH Period

1.5

µs

tlC

(10)

SCL Inactive to

CS Inactive

100

tIW

(10)(11)

SCL to

VBIAS Change

µs

tCYC

SCL Cycle Time

µs

tR, tF

(10)

SCL Input Rise and Fall Time

500

SCL

INC/DEC

VBIAS

tCI

tIL

tIH

tCYC

tID

tIW

tIC

10%

90%

(Vsense+ –

Vsense-)

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