LT6555IGN datasheet(3/16 Pages) LINER

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LT6555

6555f

Supply Current, Per Amplifier

RL = ∞

912

●

Supply Current, Disabled, Per Amplifier

VEN = 4V, RL = ∞

●

500

µA

VEN = Open, RL = ∞

●

500

µA

IEN

Enable Pin Current

VEN = 0.4V

●

–200

–95

µA

VEN = 4V

●

–75

–21

µA

ISEL

Select Pin Current

VSEL = 0.4V

●

–50

–5

µA

VSEL = 4V

●

–50

–1

µA

ISC

Output Short-Circuit Current

RL = 0Ω, VIN = ±1V

●

±50

±105

Slew Rate

±1V on ±2.5V Output Step (Note 8)

1600

2200

µs

–3dB BW

Small-Signal –3dB Bandwidth

VOUT = 200mVP-P

650

MHz

0.1dB BW

Gain Flatness

±0.1dB Bandwidth

VOUT = 200mVP-P

120

MHz

FPBW

Full Power Bandwidth 2V

VOUT = 2VP-P (Note 9)

250

350

MHz

Full Power Bandwidth 4V

VOUT = 4VP-P (Note 9)

175

MHz

All-Hostile Crosstalk

f = 10MHz, VIN = 1VP-P

–72

f = 100MHz, VIN = 1VP-P

–50

Selected Channel to Unselected

f = 10MHz, VIN = 1VP-P

–80

Channel Crosstalk

f = 100MHz, VIN = 1VP-P

–55

Channel Select Output Transient

INA = INB = 0V

200

mVP-P

Channel-to-Channel Select Time

INA = –1V, INB = 1V

from 50% SEL to VOUT = 0V

Settling Time

0.1% of VFINAL, VSTEP = 2V

6.5

tR, tF

Small-Signal Rise and Fall Time

10% to 90%, VOUT = 400mVP-P

520

Differential Gain

(Note 10)

0.033

Differential Phase

(Note 10)

0.022

Deg

HD2

2nd Harmonic Distortion

f = 10MHz, VOUT = 2VP-P

–80

dBc

HD3

3rd Harmonic Distortion

f = 10MHz, VOUT = 2VP-P

–70

dBc

ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VS = ±5V, RL = 150Ω, CL = 1.5pF, VEN = 0.4V, VAGND, VDGND, VVREF = 0V.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

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 is not production tested.

Note 3: As long as output current and junction temperature are kept below

the Absolute Maximum Ratings, no damage to the part will occur.

Depending on the supply voltage, a heat sink may be required.

Note 4: The LT6555C is guaranteed functional over the operating

temperature range of –40

°C to 85°C.

Note 5: The LT6555C is guaranteed to meet specified performance from

°C to 70°C. The LT6555C is designed, characterized and expected to

meet specified performance from –40

°C and 85°C but is not tested or QA

sampled at these temperatures. The LT6555I is guaranteed to meet

specified performance from –40

°C to 85°C.

Note 6: In order to follow the constraints for 4.5V operation for PSRR

and IPSRR testing at ±2.25V, the DGND pin is set to V–, the EN pin is set

to V– + 0.4V, and the SEL pin is set to either V– + 0.4V or V– + 4V. At

±6V

and all other cases, DGND is set to ground and the EN and SEL pins are

referenced from it.

Note 7: The VREF pin is set to 1V when testing positive swing and –1V

when testing negative swing to ensure that the internal input clamps do

not limit the output swing.

Note 8: Slew rate is 100% production tested using both inputs of

channel 2. Slew rates of channels 1 and 3 are guaranteed through

design and characterization.

Note 9: Full power bandwidth is calculated from the slew rate:

FPBW = SR/(

π • VP-P)

Note 10: 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 better than 0.05%

and 0.05

°. Nine identical amplifier stages were cascaded giving an

effective resolution of better than 0.0056% and 0.0056%.

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