ACA2401
750/870 MHz CATV
Power Doubler Line Amplifier
FEATURES
·
·
·
·
·
·
·
·
·
·
21.5 dB Gain
Very Low Distortion
Excellent 75-Ohm Input and Output Match
Stable with High VSWR Load Conditions
Monolithic Design for Consistent Performance
Part-to-Part
Low DC Power Consumption
Surface Mount Package Compatible with
Automatic Assembly
Low Cost Alternative to Hybrids
Meets Cenelec Standards
CATV Line Amplifiers, System Amplifiers,
Distribution Nodes
Data Sheet - Rev 2.0
APPLICATIONS
S7 Package
16 Pin Wide Body SOIC
with Heat Slug
PRODUCT DESCRIPTION
The ACA2401 is a highly linear, monolithic GaAs RF
amplifier that has been developed to replace, in new
designs, standard CATV hybrid amplifiers. Offered
in a convenient surface mount package, the MMIC
consists of two pairs of parallel amplifiers that are
optimized for exceptionally low distortion and noise
figure. A hybrid equivalent that provides flat gain
response and excellent input and output return loss
over the 40 to 870 MHz CATV downstream band is
formed when one ACA2401 is cascaded between
two appropriate transmission line baluns.
RF Input
1A
2A
1B
2B
RF Output
ACA2401
Figure 1: Hybrid Application Diagram
08/2001
ACA2401
1
2
3
4
5
6
7
8
GND
2A
IN
GND
1A
IN
1B
IN
I
SET
2B
IN
GND
Figure 2: Pin Out
GND
1A
OUT
Bias 1A
2A
OUT
2B
OUT
Bias 1B
1B
OUT
GND
16
15
14
13
12
11
10
9
Table 1: Pin Description
PIN
1
2
3
4
5
6
7
8
N AME
GND
2A
IN
GND
1A
IN
1B
IN
I
SET
2B
IN
GND
D ESC R IPTION
Ground
Ampli fi er 2A Input
Ground
Ampli fi er 1A Input
Ampli fi er 1B Input
C urrent Adjust
Ampli fi er 2B Input
Ground
PIN
9
10
11
12
13
14
15
16
N AME
GND
1B
OUT
B i as 1B
2B
OUT
2A
OUT
B i as 1A
1A
OUT
GND
D ESC R IPTION
Ground
Ampli fi er 1B Output
Bi as for 1B Ampli fi er
Ampli fi er 2B Output and
Supply
Ampli fi er 2A Output and
Supply
Bi as for 1A Ampli fi er
Ampli fi er 1A Output
Ground
2
Data Sheet - Rev 2.0
08/2001
ACA2401
ELECTRICAL CHARACTERISTICS
Table 2: Absolute Mimimum and Maximum Ratings
PAR AMETER
Supply (pi ns 12, 13)
RF Power at Inputs (pi ns 4, 5)
Storage Temperature
Solderi ng Temperature
Solderi ng Ti me
MIN
0
-
-65
-
-
MAX
+28
+75
+150
+260
5.0
U N IT
VD C
dBmV
°C
°C
S ec
Stresses in excess of the absolute ratings may cause permanent
damage. Functional operation is not implied under these conditions.
Exposure to absolute ratings for extended periods of time may
adversely affect reliability.
Notes:
1. Pins 2, 4, 5 and 7 should be AC-coupled. No external DC bias should
be applied.
2. Pin 6 should be AC-grounded and/or pulled to ground through a resistor
for current control. No external DC bias should be applied.
3. Pins 11 and 14 are bias feeds for input amplifiers 1A and 1B. No
external DC bias should be applied.
4. Pins 10 and 15 receive DC bias directly from pins 11 and 14. No other
external bias should be applied.
Table 3: Operating Ranges
PAR AMETER
Supply: V
DD
(pi ns 12, 13)
RF Frequency
C ase Temperature
MIN
-
40
-40
TYP
+24
-
-
MAX
-
870
+110
U N IT
VD C
MHz
°C
The device may be operated safely over these conditions; however, parametric
performance is guaranteed only over the conditions defined in the electrical
specifications.
Data Sheet - Rev 2.0
08/2001
3
ACA2401
Table 4: AC and DC Electrical Specifications
(T
A
= +25 °C, V
DD
= +24 VDC)
PAR AMETER
Gai n @870 MHz
(1)
C able Equi valent Slope
Gai n Flatness
Noi se Fi gure
(1)
(1)
MIN
20.8
-
-
-
-
-
-
-
-
-
-
-
-
18
-
-
TYP
21.3
0
± 0.2
4.0
-70
-70
-69
-72
-66
-61
-64
-64
-62
22
390
-
MAX
21.8
-
-
4.5
-
-68
-
-
-64
-
-
-62
-
-
-
3.8
U N IT
dB
dB
dB
dB
C OMMEN TS
@ 870 MHz
(1)
C TB
(1)
77 C hannels
(2)
110 C hannels
(3)
128 C hannels
(4)
C SO
(1)
77 C hannels
(2)
110 C hannels
(3)
128 C hannels
(4)
XMOD
(1)
77 C hannels
(2)
110 C hannels
(3)
128 C hannels
(4)
Return Loss (Input/Output)
(1)
Supply C urrent
Thermal Resi stance
dB c
dB c
dB c
dB
mA
o
75 Ohm system
C /W
Notes:
(1) Measured with baluns on the input and output of the device. See Figure 3 for test setup.
(2) Parts measured with 77 channels, +56 dBmV power, 13.5 dB tilt at 870 MHz.
(3) Parts measured with 110 channels, +52 dBmV power, 13.5 dB tilt at 870 MHz.
(4) Parts measured with 128 channels, +50 dBmV power, 13.5 dB tilt at 870 MHz.
4
Data Sheet - Rev 2.0
08/2001
+24 V
330pF
Figure 3: Test Circuit Schematic
1
2
GND
2A
IN
GND
1A
IN
1B
IN
I
SET
2B
IN
GND
ACA2401
GND
1A
OUT
Bias 1A
16
15
14
390nH
0.01uF
390 nH
TVS
0.01uF
RF Ou
(75 Oh
Data Sheet - Rev 2.0
08/2001
RF Input
(75 Ohms)
3
0.01uF
4
5
2A
OUT
13
2B
OUT
Bias 1B
1B
OUT
GND
12
11
10
9
330pF
0.01uF
0.01uF
6
7
8
330pF
0.01uF
390nH
390nH
+24 V
330 pF
ACA2401
5
京公网安备 11010802033920号
EEWORLD
