Custom MMIC

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Pad Diagram

Functional Description

Pad Description

ver 1.4 0119

CMD197

1-24 GHz Distributed Driver Amplifier

Pad

Function

Description

Schematic

1

RF in

50 ohm matched input

External DC block required

2

Vdd

Power supply voltage

Decoupling and bypass caps required

3

RF out

50 ohm matched output

External DC block required

4

ACG

Low frequency termination. Attach bypass

capacitor per application circuit

Backside

Ground

Connect to RF / DC ground

RF in

RF out

GND

Vdd

Vgg

Vdd

Vgg

Vdd

1

2

3

4

For CMD146

RF in

LFT1

LFT2

RF out & Vdd

LFT3

LFT4

3 bit

4 dB

4 dB

45 deg

45 deg

Vgg

Vdd

Vgg

Vdd

Vdd

Vdd

Vdd (+)

Vgg (-)

RF in

RF out

Port B

Port A

Vctl

5

4 bit

Vctl

Vctl

RF

V

dd

out

RF

in

1

2

3

4

RF in

Vdd

RF in

RF out

GND

Vdd

Vgg

Vdd

Vgg

Vdd

1

2

3

4

For CMD146

RF in

ACG3

ACG4

RF out & Vdd

ACG1

ACG2

3 bit

4 dB

4 dB

45 deg

45 deg

Vgg

Vdd

Vgg

Vdd

Vdd

Vdd

Vdd (+)

Vgg (-)

RF in

RF out

Port B

Port A

Vctl

5

4 bit

Vctl

Vctl

RF

V

dd

out

RF

in

Vgg

GB

LO

RF

IF

Vgg

400 ohm

20 ohm

To Gates

Ven

Vdet

RF in

ACG1

RF out & Vdd

ACG2

Vgg2

RF in

1

2

3

5

6

7

RF in

Vgg

0.01 uF

0.01 uF

0.01 uF

100 pF

4

Vdd

RF out

RF out & Vdd

ACG1

Vee

Vctl

Vctrl1

Vctrl2

Vctl

RF

LO

IF1, IF2

Vdd1, 2, 3

-90

0

RF

Vgg

Vdd1, 2

RF1, 2 in

RF1, 2 out

1

3

4

7

8

9

RF in

Vgg

0.01 uF

1000 pF

0.01 uF

100 pF

5

Vdd

RF out

Vgg2

0.01 uF

100 pF

2

1000 pF

6

0.01 uF

GB

Vgg

TTL

or

CMOS

10k

Ohm

Vcc

GND

Vcc

GND

A

B

-5 Vdc

GaAs SWITCH

CONTROL

Vz = 5.1V

Izt = 50uA

COMPENSATED

DEVICES

CD4689

74HCT04 (TTL) OR

74HC04 (CMOS)

A, B

Vgg1, 2

Vgg

RF in

Vdd

RF out