Datasheet

4
LT1675/LT1675-1
16751fb
AC CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Slew Rate V
OUT
= 5V
P-P
1100 V/µs
Full Power Bandwidth (Note 5) V
OUT
=6V
P-P
58 MHz
Small-Signal –3dB Bandwidth Less Than 1dB Peaking 250 MHz
Gain Flatness Less Than 0.1dB 70 MHz
Gain Matching R to G to B 0.10 dB
R1 to R2, G1 to G2, B1 to B2, LT1675-1 V
IN1
to V
IN2
0.01 dB
Channel-to-Channel Select Time R1 = 0V, R2 = 1V
Delay Time Measured from Time SELECT Pin Crosses Logic Threshold 5.0 ns
Switching Time Time for V
OUT
to Go from 0V to 1V 2.5 ns
Enable Time 10 ns
Disable Time 100 ns
Input Pin Capacitance 2pF
SELECT Pin Capacitance LT1675 2.2 pF
LT1675-1 1.5 pF
ENABLE Pin Capacitance LT1675 2.1 pF
LT1675-1 1.5 pF
Output Pin Capacitance (Disabled) ENABLE Open 4.4 pF
Small-Signal Rise Time V
IN
= 300mV
P-P
, R
L
= 100Ω 1.85 ns
Propagation Delay V
IN
= 300mV
P-P
, R
L
= 100Ω 3ns
Overshoot V
IN
= 300mV
P-P
, R
L
= 100Ω 10 %
On-Channel to Off-Channel Crosstalk Measured at 10MHz 60 dB
Chip Disable Crosstalk Measured at 10MHz, ENABLE Open 90 dB
Channel Select Output Transient Measured Between Back Termination and Load 50 mV
P-P
Differential Gain (Note 6) 0.07 %
Differential Phase (Note 6) 0.05 DEG
LT1675CGN: T
J
= T
A
+ (P
D
)(120°C/W)
LT1675CMS8-1: T
J
= T
A
+ (P
D
)(250°C/W)
LT1675CS8-1: T
J
= T
A
+ (P
D
)(150°C/W)
Note 5: Full power bandwidth is calculated from the slew rate
measurement:
FPBW = SR/2πV
PEAK
.
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°.
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.
Note 4: T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formula:
Truth Table
LT1675 LT1675-1
SELECT ENABLE RED OUT GREEN OUT BLUE OUT VOUT
1 0 RED 1 GREEN 1 BLUE 1 VIN1
0 0 RED 2 GREEN 2 BLUE 2 VIN2
X 1 OFF OFF OFF OFF
T
A
= 25°C. V
S
= ±5V, R
L
= 150Ω
,
V
IN
= 0V LT1675 (Pins 1, 2, 3, 6, 7, 8),
LT1675-1 (Pins 1, 3), ENABLE = 0V, unless otherwise specified.