LT1398CS datasheet(5/16 Pages) LINER

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LT1398/LT1399/LT1399HV

The q denotes specifications which apply over the specified operating temperature range, otherwise specifications are at TA = 25°C.

For each amplifier: VCM = 0V, VS = ±7.5V, EN = 0V, pulse tested, unless otherwise noted. (Note 4)

ELECTRICAL C

HARA TERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Slew Rate (Note 6)

AV = 10, RL = 150Ω, VS = ±5V

500

800

µs

tON

Turn-On Delay Time (Note 7)

RF = RG = 324Ω, RL = 100Ω, VS = ±5V

tOFF

Turn-Off Delay Time (Note 7)

RF = RG = 324Ω, RL = 100Ω, VS = ±5V

100

tr, tf

Small-Signal Rise and Fall Time

RF = RG = 324Ω, RL = 100Ω, VOUT = 1VP-P,

1.3

VS = ±5V

tPD

Propagation Delay

RF = RG = 324Ω, RL = 100Ω, VOUT = 1VP-P,

2.5

VS = ±5V

Small-Signal Overshoot

RF = RG = 324Ω, RL = 100Ω, VOUT = 1VP-P,10

VS = ±5V

Settling Time

0.1%, AV = – 1V, RF = RG = 309Ω, RL = 150Ω,25

VS = ±5V

Differential Gain (Note 8)

RF = RG = 324Ω, RL = 150Ω, VS = ±5V

0.13

Differential Phase (Note 8)

RF = RG = 324Ω, RL = 150Ω, VS = ±5V

0.10

DEG

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: This parameter is guaranteed to meet specified performance

through design and characterization. It has not been tested.

Note 3: A heat sink may be required depending on the power supply

voltage and how many amplifiers have their outputs short circuited.

Note 4: The LT1398/LT1399/LT1399HV are guaranteed to meet specified

performance from 0

°C to 70°C and are designed, characterized and

expected to meet these extended temperature limits, but are not tested at

–40

°C and 85°C. Guaranteed I grade parts are available, consult factory.

Note 5: TJ is calculated from the ambient temperature TA and the

power dissipation PD according to the following formula:

LT1398CS, LT1399CS, LT1399HVCS: TJ = TA + (PD • 100°C/W)

LT1399CGN: TJ = TA + (PD • 120°C/W)

Note 6: Slew rate is measured at

±2V on a ±3V output signal.

Note 7: Turn-on delay time (tON) is measured from control input to

appearance of 1V at the output, for VIN = 1V. Likewise, turn-off delay

time (tOFF) is measured from control input to appearance of 0.5V on

the output for VIN = 0.5V. This specification is guaranteed by design

and characterization.

Note 8: Differential gain and phase are measured using a Tektronix

TSG120YC/NTSC signal generator and a Tektronix 1780R Video

Measurement Set. The resolution of this equipment is 0.1% and 0.1

°.

Ten identical amplifier stages were cascaded giving an effective

resolution of 0.01% and 0.01

°.

SMALL SIGNAL

VS (V)

RL (Ω)RF (Ω)RG (Ω)

– 3dB BW (MHz)

0.1dB BW (MHz)

PEAKING (dB)

±5

100

365

–

300

150

0.05

±5

100

324

300

150

±5

– 1

100

309

300

150

TYPICAL AC PERFOR A CE

(LT1399HV)

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