LT5514 datasheet(9/20 Pages) LINER

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LT5514

5514f

TYPICAL PERFOR A CE CHARACTERISTICS

Pulse Response vs COUT at Max

Gain. Output Level is 2VP-P into

Ω External Load

(Standard Mode) TA = 25°C, VCC = 5V, VCCO = 5V,

ENA = ENB = 3V, control input levels VIL = 0.6V, VIH = 3V unless otherwise noted. Test circuit shown in Figure 10 unless otherwise

noted. Note 1: Subtract 0.75ns calibration delay from output plots to estimate the LT5514 group delay. Note 2: When specified, COUT

is connected differentially across the LT5514 OUT+, OUT– output pins.

2ns/DIV

5514 G27

0pF

22pF TO

GROUND

EACH

OUTPUT

COUT

0pF

1pF

1.8pF

3.3pF

4.7pF

6.8pf

10pF

11pF

18pF

INPUT

RMATCH = 255Ω

2ns/DIV

5514 G28

4VP-P

3VP-P

2VP-P

INPUTS

COUT = 0.82pF

1ns/DIV

5514 G29

MAX GAIN

1.5dB STEP

3dB STEP

6dB STEP

12dB STEP

INPUT

Pulse Response vs Output Level at

Max Gain. Indicated Voltage

Levels are into 50

Ω External Load

Pulse Response vs Attenuation,

Output Level is 4VP-P at Max Gain

into 50

Ω External Load

Pulse Response vs Attenuation,

Output Level is 2VP-P at Max Gain

into 50

Ω External Load

1ns/DIV

5514 G30

MAX GAIN

1.5dB STEP

3dB STEP

6dB STEP

12dB STEP

INPUT

RMATCH = 255Ω

Pulse Response vs Attenuation,

Output Level is 2VP-P at Max Gain

into 50

Ω External Load

1ns/DIV

5514 G31

MAX GAIN

1.5dB STEP

3dB STEP

6dB STEP

12dB STEP

INPUT

RMATCH = 255Ω, COUT = 1.8pF

Pulse Response vs Attenuation,

LT5514 Levels are: VIN = 66mVP-P,

VOUT = 2VP-P at Max Gain

1ns/DIV

5514 G32

MAX GAIN

1.5dB STEP

3dB STEP

6dB STEP

12dB STEP

INPUT

ROUT = 100Ω

FIGURE 9 TEST CIRCUIT

Pulse Response vs Attenuation,

LT5514 Levels are: VIN = 66mVP-P,

VOUT = 4VP-P at Max Gain

1ns/DIV

5514 G33

MAX GAIN

1.5dB STEP

3dB STEP

6dB STEP

12dB STEP

INPUT

ROUT = 200Ω

FIGURE 9 TEST CIRCUIT

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