LTC6401CUD-20PBF LINER [Linear Technology], LTC6401CUD-20PBF Datasheet - Page 5

• Manufacturer Part Number: LTC6401CUD-20PBF
• Description: 1.3GHz Low Noise, Low Distortion Differential ADC Driver for 140MHz IF
• Manufacturer: LINER [Linear Technology]

AC ELECTRICAL CHARACTERISTICS
fl oating, V
SYMBOL
IMD
OIP
P
NF
e
e
IMD
TYPICAL PERFORMANCE CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: Input pins (+IN, –IN) are protected by steering diodes to either
supply. If the inputs go beyond either supply rail, the input current should
be limited to less than 10mA.
Note 3: The LTC6401C and LTC6401I are guaranteed functional over the
operating temperature range of –40°C to 85°C.
Note 4: The LTC6401C is guaranteed to meet specifi ed performance from
0°C to 70°C. It is designed, characterized and expected to meet specifi ed
performance from –40°C to 85°C but is not tested or QA sampled at these
IN,140M
ON,140M
1dB,140M
140M
25
20
15
10
3,140M
3,140M
3,130M/150M
5
0
10
Frequency Response
TEST CIRCUIT B
OCM
= 1.25V, ⎯ E ⎯ N ⎯ A ⎯ B ⎯ L ⎯ E = 0V, No R
FREQUENCY (MHz)
100
PARAMETER
Third-Order Intermodulation
(f1 = 139.5MHz f2 = 140.5MHz)
Third-Order Output Intercept Point
(f1 = 139.5MHz f2 = 140.5MHz)
1dB Compression Point
Noise Figure
Input Referred Voltage Noise Density
Output Referred Voltage Noise Density Includes Resistors (Short Inputs)
Third-Order Intermodulation
(f1 = 130MHz f2 = 150MHz) Measure
at 170MHz
1000
640120 G01
3000
L
unless otherwise noted.
–0.2
–0.4
–0.6
–0.8
–1.0
1.0
0.8
0.6
0.4
0.2
0
10
Gain 0.1dB Flatness
TEST CIRCUIT B
CONDITIONS
2V
2V
2V
2V
R
R
Includes Resistors (Short Inputs)
2V
L
L
P-P,OUT
P-P,OUT
P-P,OUTFILT
P-P,OUT
P-P,OUT
= 375Ω (Notes 5, 7)
= 375Ω (Note 5)
FREQUENCY (MHz)
Composite, R
Composite, No R
Composite, No R
Composite, R
Composite, No R
100
Specifi cations are at T
temperatures. The LTC6401I is guaranteed to meet specifi ed performance
from –40°C to 85°C.
Note 5: Input and output baluns used. See Test Circuit A.
Note 6: Measured using Test Circuit B.
Note 7: Since the LTC6401-20 is a feedback amplifi er with low output
impedance, a resistive load is not required when driving an AD converter.
Therefore, typical output power is very small. In order to compare the
LTC6401-20 with amplifi ers that require 50Ω output load, the LTC6401-20
output voltage swing driving a given R
if it were driving a 50Ω load. Using this modifi ed convention, 2V
defi nition equal to 10dBm, regardless of the actual R
L
L
= 400Ω
= 375Ω (Note 5)
L
L
(Note 7)
640120 G02
L
1000
A
= 25°C. V
–100
–200
–300
–400
100
0
S21 Phase and Group Delay vs
Frequency
0
TEST CIRCUIT B
MIN
–61
+
PHASE
GROUP DELAY
200
= 3V, V
L
FREQUENCY (MHz)
is converted to OIP
400
LTC6401-20
–
= 0V, +IN and –IN
TYP
–71
–74
–72
–69
6.4
2.1
41
18
22
600
L
.
800
MAX
3
and P
640120 G03
P-P
1000
1dB
nV/√ ⎯ H ⎯ z
nV/√ ⎯ H ⎯ z
is by
UNITS
640120f
1.5
1.2
0.9
0.6
0.3
0
5
dBm
dBm
as
dBc
dBc
dBc
dBc
dB