LMH6401 datasheet(9/48 Pages) TI1

Part #	LMH6401

Description	LMH6401 DC to 4.5 GHz, Fully-Differential, Digital Variable-Gain Amplifier

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Manufacturer	TI1 [Texas Instruments]

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Frequency (MHz)

10

100

1000

10000

-40

-30

-20

-10

0

10

D024

No Cap

1 pF

2.4pF

4.7pF

10pF

Frequency (MHz)

10

100

1000

2000

20

25

30

35

40

45

50

D018

Gain = 26dB

Gain = 18dB

Gain = 10dB

Gain = 2dB

Frequency (MHz)

50

100

1000

10000

-100

-80

-60

-40

-20

0

20

40

D027

Sdd21

Sdd12

Sdd11

Sdd22

Voltage Gain (dB)

-6

-2

2

6

10

14

18

22

26

-40

-35

-30

-25

-20

-15

-10

-5

0

D042

200 MHz

500 MHz

1000 MHz

2000 MHz

Frequency (MHz)

10

100

1000

10000 24000

-10

-5

0

5

10

15

20

25

30

D013

MaxGain

Frequency (MHz)

10

100

1000

10000

24

25

26

27

28

29

30

D021

-40°C

25°C

85°C

LMH6401

www.ti.com

SBOS730A – APRIL 2015 – REVISED MAY 2015

7.7 Typical Characteristics

At TA = 25°C, VS– = –2.5 V, VS+ = 2.5 V, VOCM = 0 V, RLOAD = 200-Ω differential (Ro(internal, diff) = 20 Ω), VO = 2 VPPD, and AV

= 26 dB, unless otherwise noted. Differential input and output, and input and output pins referenced to mid-supply, unless

otherwise noted. Measured using an EVM as discussed in the Parameter Measurement Information section.

Figure 1. Voltage Gain vs Frequency (1-dB Gain Steps)

Figure 2. Maximum Gain vs Temperature

Figure 3. S-Parameters vs Frequency

Figure 4. Input Return Loss vs Gain Settings

PO = –2 dBm per tone

Figure 5. Frequency Response vs Capacitive Load

Figure 6. Output IP3 vs Frequency and Gain Settings

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