ACA0861 - A, B, C, D
750/860 MHz CATV Line Amplifier MMIC
Data Sheet - Rev 2.0
FEATURES
·
·
·
·
·
·
·
·
·
Flat Gain
Very Low Distortion
Excellent Input/Output Match
Low DC Power Consumption
Good RF Stability with High VSWR Load
Conditions
Surface Mount Package Compatible with
Automatic Assembly
Low Cost
Repeatability of Monolithic Fabrication
Meets Cenelec Standard
S7 Package
16 Pin Wide Body SOIC
with Heat Slug
PRODUCT DESCRIPTION
The ACA0861 family of surface mount monolithic
GaAs RF Linear Amplifiers has been developed to
replace, in new designs, the standard CATV Hybrid
amplifiers currently in use. The MMICs consist of
two parallel amplifiers, each with 12 dB gain. The
Amplifiers are optimized for exceptionally low
distortion and noise figure while providing flat gain
and excellent input and output return loss. There are
four differently specified amplifiers available: two
input stages and two output stages. The ACA0861A
and the ACA0861C are input stages and are
specified at +34 dBmV flat output. The ACA0861B
and ACA0861D are output stages and are specified
at +44 dBmV flat output. A Hybrid equivalent is formed
when one input stage ACA0861 is cascaded with an
ACA0861 output stage between two transmission
line baluns. For low gain applications a single
ACA0861 can be used between baluns, for higher
gain applications more than two ACA0861 can be
cascaded between baluns. See ACA0861
application note for more information.
RF Input
12dB
12dB
12dB
12dB
RF Output
ACA0861A/C
ACA0861B/D
Figure 1: Hybrid Application Diagram
08/2001
ACA0861 - A, B, C, D
Input Stages
The ACA0861A and the ACA0861C are designed as
input stages and are specified at +34 dBmV flat
output. These parts can be used alone for low gain,
low output level applications or can be cascaded
with one of the ACA0861 output stages for higher
gain and output signal drive level. The ACA0861A is
a low power dissipation part designed to drive the
ACA0861B output stage. The ACA0861C is a slightly
higher power dissipation part and provides the
needed distortion parameters to drive the ACA0861D
output stage.
Output Stages
The ACA0861B and ACA0861D are designed as
output stages and are specified at +44 dBmV flat
output. These parts can be used alone for low gain,
high output level applications or can be cascaded
with one of the ACA0861 input stages for higher gain.
The ACA0861B is a low power dissipation part
designed as the output stage with an ACA0861A input
stage. The ACA0861D is a higher power dissipation
part designed as the output stage with an ACA0861C
input stage. Cascaded, an ACA0861A and ACA0861B
provide exceptional push-pull hybrid equivalent
performance; an ACA0861C and an ACA0861D
cascaded provide exceptional power doubling hybrid
equivalent performance.
1
2
3
4
5
6
7
8
GND
N/C
RF
INA
GND
GND
RF
INB
I
ADJ
GND
Figure 2: Pin Out
GND
V
A
RF
OUTA
GND
GND
RF
OUTB
V
B
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
N/C
RF
INA
GND
GND
RF
INB
I
ADJ
GND
D ESC R IPTION
Ground
No C onnecti on
Input to Ampli fi er A
Ground
Ground
Input to Ampli fi er B
C urrent Adjust
Ground
PIN
9
10
11
12
13
14
15
16
Data Sheet - Rev 2.0
08/2001
N AME
GND
V
B
RF
OUTB
GND
GND
RF
OUTA
V
A
GND
D ESC R IPTION
Ground
Supply for Ampli fi er B
Output from Ampli fi er B
Ground
Ground
Output from Ampli fi er A
Supply for Ampli fi er A
Ground
2
ACA0861 - A, B, C, D
ELECTRICAL CHARACTERISTICS
Table 2: Absolute Minimum and Maximum Ratings
PAR AMETER
Ampli fi er Suppli es (pi ns 10, 11, 14, 15)
RF Input Power (pi ns 3, 6)
Storage Temperature
Solderi ng Temperature
Solderi ng Ti me
MIN
0
-
-65
-
-
MAX
+15
+70
+150
+260
5.0
U N IT
VD C
dBmV
°C
°C
se c
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 3 and 6 should be AC-coupled. No external DC bias should be applied.
2. Pin 7 should be pulled to ground through a resistor or left open-circuited . No
external DC bias should be applied.
Table 3: Operating Ranges
PAR AMETER
RF Frequency
Supply: V
D
(pi ns 10, 11, 14, 15)
Operati ng Temperature: T
A
MIN
40
-
-40
TYP
-
+12
-
MAX
860
-
+110
U N IT
MHz
VD C
°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
ACA0861 - A, B, C, D
Table 4: Electrical Specifications
(T
A
= +25 °C, V
D
= +12 VDC)
AC A0 8 6 1 A
PAR AMETER
Bandwi dth
1
Gai n
1
Gai n Flatness
1
Noi se Fi gure
2
C TB
2,3
77 C hannels
110 C hannels
128 C hannels
C SO
2,3
77 C hannels
110 C hannels
128 C hannels
XMOD
2,3
77 C hannels
110 C hannels
128 C hannels
Supply C urrent
4
C able Equi valent
Slope
1
Return Loss
(Input/Output)
1
MIN
40
11.4
-
-
-
-
-
-
-
-
-
-
-
-
-0.5
18
TYP
-
11.9
-
3
-70
-68
-65
-71
-71
-70
-67
-63
-59
180
-
22
MAX
860
12.4
AC A0 8 6 1 B
MIN
40
11.5
-
-
-
-
-
-
-
-
-
-
-
-
-0.5
18
TYP
-
12
-
3
-62
-60
-58
-66
-66
-64
-62
-56
-55
310
-
22
MAX
860
12.5
AC A0 8 6 1 C
MIN
40
11.5
-
-
-
-
-
-
-
-
-
-
-
-
-0.5
18
TYP
-
12
-
3
-77
-75
-71
-75
-75
-73
-74
-71
-67
260
-
22
MAX
860
12.5
AC A0 8 6 1 D
MIN
40
11.6
-
-
-
-
-
-
-
-
-
-
-
-
-0.5
18
TYP
-
12.1
-
3
-70
-68
-67
-72
-72
-70
-71
-68
-66
475
-
22
MAX U N IT
860
12.6
MHz
dB
dB
dB
dB c
dB c
dB c
dB c
dB c
dB c
dB c
dB c
dB c
mA
dB
dB
±
0.3
5
-
-64
-
-
-66
-
-
-56
-
200
1.0
-
±
0.3
5
-
-57
-
-
-60
-
-
-50
-
330
1.0
-
±
0.3
5
-
-68
-
-
-68
-
-
-62
-
275
1.0
-
±
0.3
6
-
-64
-
-
-68
-
-
-61
-
515
1.0
-
Notes:
1. Measured performance of MMIC alone. Balun effects de-imbedded from measurement.
2. Measured with a balun on input and output of the device. See Figure 3 for test setup.
3. All parts measured with 110 channel flat input. Parts A and C measured at +34 dBmV output (per channel).
Parts B and D measured at +44 dBmV output (per channel).
4. A fixed resistor is needed for parts A through C; part D does not need an external resistor (see Table 6.)
These resistors set the devices current draw. Bias voltage is +12 VDC.
4
Data Sheet - Rev 2.0
08/2001
ACA0861 - A, B, C, D
1
N/C
C
1
16
15
14
13
12
L1
+ VD
2
3
T
1
F In
C
3
T
2
C
5
ACA0861
4
5
6
C
2
R
1
RF Out
11
10
9
+VD
L2
C
4
C
6
7
8
Note: Apply voltage to both V
D
lines simultaneously
Figure 3: Test Circuit
Table 5: Parts List for Test Circuit
R EF
C 1, C 2, C 5, C 6
C 3, C 4
L1, L2
R1
T1, T2
(1)
D ESC R IPTION
0.01uF chi p capaci tor
300pF chi p capaci tor
390nH ai r-wound chi p i nductor
(see Table 6)
ferri te core
wi re
QTY
4
2
2
1
2
VEN D OR
Murata
Murata
C oi lcraft
VEN D OR PAR T N O.
GRM39X7R1103K25V
GRM39X7R301K25V
1008C S-391
Phi li ps
MWS Wi re i ndustri es
TC 3.4/1.8/1.3-3D 3
B238611
Note:
(1) T1, T2 (balun) wind 4 turns thru core, as shown in Figure 4.
Table 6: R1 Resistor Value
PAR T N U MB ER
A C A 0861A
A C A 0861B
A C A 0861C
A C A 0861D
R 1 VALU E
21.5 Ohms
274 Ohms
121 Ohms
(open)
Figure 4: Balun Drawing (4 Turns)
Data Sheet - Rev 2.0
08/2001
5
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