LT1675 datasheet(4/16 Pages) LINER

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LT1675/LT1675-1

AC CHARACTERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Slew Rate

VOUT = 5VP-P

1100

µs

Full Power Bandwidth (Note 5)

VOUT =6VP-P

MHz

Small-Signal –3dB Bandwidth

Less Than 1dB Peaking

250

MHz

Gain Flatness

Less Than 0.1dB

MHz

Gain Matching

R to G to B

0.10

R1 to R2, G1 to G2, B1 to B2, LT1675-1 VIN1 to VIN2

0.01

Channel-to-Channel Select Time

R1 = 0V, R2 = 1V

Delay Time

Measured from Time SELECT Pin Crosses Logic Threshold

5.0

Switching Time

Time for VOUT to Go from 0V to 1V

2.5

Enable Time

Disable Time

100

Input Pin Capacitance

2pF

SELECT Pin Capacitance

LT1675

2.2

LT1675-1

1.5

ENABLE Pin Capacitance

LT1675

2.1

LT1675-1

1.5

Output Pin Capacitance (Disabled)

ENABLE Open

4.4

Small-Signal Rise Time

VIN = 300mVP-P, RL = 100Ω

1.85

Propagation Delay

VIN = 300mVP-P, RL = 100Ω

3ns

Overshoot

VIN = 300mVP-P, RL = 100Ω

On-Channel to Off-Channel Crosstalk

Measured at 10MHz

Chip Disable Crosstalk

Measured at 10MHz, ENABLE Open

Channel Select Output Transient

Measured Between Back Termination and Load

mVP-P

Differential Gain (Note 6)

0.07

Differential Phase (Note 6)

0.05

DEG

Note 4: TJ is calculated from the ambient temperature TA and power

dissipation PD according to the following formula:

LT1675CGN: TJ = TA + (PD)(120°C/W)

LT1675CMS8-1: TJ = TA + (PD)(250°C/W)

LT1675CS8-1: TJ = TA + (PD)(150°C/W)

Note 5: Full power bandwidth is calculated from the slew rate

measurement:

FPBW = SR/2

πVPEAK.

Note 6: Differential Gain and Phase are measured using a Tektronix

TSG120 YC/NTSC signal generator and a Tektronix 1780R Video

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

°. Nine

identical MUXs were cascaded giving an effective resolution of 0.011%

and 0.011

°.

The q denotes specifications that apply over the specified temperature

range.

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

of a device may be impaired.

Note 2: May require a heat sink.

Note 3: The LT1675/LT1675-1 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.

Truth Table

LT1675

LT1675-1

SELECT

ENABLE

RED OUT

GREEN OUT

BLUE OUT

VOUT

RED 1

GREEN 1

BLUE 1

VIN1

RED 2

GREEN 2

BLUE 2

VIN2

OFF

°C ≤ TA ≤ 70°C, VS = ±5V, RL = 150Ω, VIN = 0V LT1675 (Pins 1, 2, 3, 6, 7, 8),

LT1675-1 (Pins 1, 3), ENABLE = 0V, unless otherwise specified.

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