ACA2604
870 MHz FTTx RF Amplifier
Data Sheet
FEATURES
• Usable to 1 GHz
• High Linearity: 65 dBc CTB (79 Chan.)
• Low Equivalent Input Noise: 4.5 pA/rtHz
• 20 dB Gain Adjust
• 400 Ω Differential Input Impedance: No
Transformer Required for Interface to
Photodiode
• Single +5 V Supply
• 5 mm x 5 mm x 1 mm Surface Mount Package
• RoHS Compliant Package
• Pin Compatible with the ACA2601
APPLICATIONS
S29 Package
28 Pin QFN
5 mm x 5 mm x 1 mm
• FTTH RF Amplifier Used in Conjunction With
Triplexer in Fiber-Coax Line Terminals
• Post photodiode RF Amplifier in FTTB video
receivers for Multiple Dwelling Units (MDUs).
PRODUCT DESCRIPTION
The ACA2604 amplifier is intended to be used in fiberto-coax equipment, such as ONUs for FTTH systems
incorporating RF overlay, or FTTB optical receivers
for MDUs. The device is driven by, and amplifies the
output of, the video downstream path photodiode.
The high-impedance input of the ACA2604 eliminates
the need for a costly transformer usually needed to
interface to the photodiode, and a low equivalent input
noise level offers excellent sensitivity. The device
provides sufficient linearity to maintain low CTB levels
Supply
Matching
Circuit
LNA
in full-bandwidth (132 channel) systems, even across
a wide gain adjustment range.
The ACA2604 is manufactured using proven MESFET
technology that offers state-of-the-art reliability,
temperature stability and ruggedness. The device
operates from a single +5 V supply and is offered in a
5 mm x 5 mm x 1 mm surface mount package.
Attenuator
Control
Voltage
Controlled
Attenuator
RF Output
Output
Amplifier
ACA2604
1:1
Transmission
Line Balun
Figure 1: Application Block Diagram
204210B • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • September 19, 2016
I_ADJ_OUT
ACA2604
Figure 2: Pinout (X-ray Top View)
Table 1: Pin Description
2
PIN
NAME
DESCRIPTION
PIN
NAME
DESCRIPTION
1
NC
No Connection
28
VCC_IN1
Input Stage Supply 1
2
RFIN1
RF Input 1
27
NC
No Connection
3
NC
No Connection
26
VAGC
AGC Control Input
4
GND
Ground
25
GND
Ground
5
NC
No Connection
24
VCC_AGC
AGC Supply
6
RFIN2
RF Input 2
23
NC
No Connection
7
NC
No Connection
22
GND
Ground
8
VCC_IN2
Input Stage Supply 2
21
VCC_OUT1
Output Stage Supply 1
9
GND
Ground
20
RFOUT1
RF Output 1
10
IADJ_IN
Input Stage Current Adjust
19
GND
Ground
11
GND
Ground
18
GND
Ground
12
IADJ_OUT
Output Stage Current Adjust
17
GND
Ground
13
GND
Ground
16
RFOUT2
RF Output 2
14
GND
Ground
15
VCC_OUT2
Output Stage Supply 2
Data Sheet
September 19, 2016 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 204210B
ACA2604
ELECTRICAL CHARACTERISTICS
Table 2: Absolute Minimum and Maximum Ratings
PARAMETER
MIN
MAX
UNIT
Supply Voltage (VCC)
0
+8
V
RF Input Power
-
+40
dBmV
ESD Rating
500
1000
-
V
MSL Level
2-260
-
-
COMMENTS
per channel
132 channel loading
Human Body Model, Class 1B
Charged Device Model, Class 3
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.
Table 3: Operating Ranges
PARAMETER
MIN
TYP
MAX
UNIT
50
-
1000
MHz
Supply Voltage (VCC)
-
+5
-
V
RF Output Power (POUT)
-
+18
-
dBmV/ch
Case Temperature (TC)
-40
-
+110
°C
Operating Frequency (f)
COMMENTS
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
204210B • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • September 19, 2016
3
ACA2604
Table 4: Electrical Specifications - RFIN and RFOUT Characterizations (see Figure 3)
(VCC = +5 V, 75 Ω system, TA = +25 °C)
PARAMETER
MIN
TYP
MAX
UNIT
RF Gain over Temperature (1)
22.5
24.0
-
dB
CTB (2)
-
-65
-
dBc
CSO (2)
-
-65
-
dBc
Input Impedance
-
400
-
Ω
Current Consumption
-
230
295
mA
Thermal Resistance
-
18
25
°C/W
COMMENTS
at 547.25 MHz
differential
Notes:
(1) Temperature range of -30 to +100 °C referenced to the package slug.
(2) 79 analog channels from 55.25 to 547.25 MHz, +21 dBmV output power, with 14 dB gain reduction
by AGC
Table 5: Electrical Specifications - Optical in and RFOUT Characterizations
(VCC = +5 V, optical input, 75 Ω output, TA = +25 °C, frequency ranges 55.25 to 865.25 MHz)
PARAMETER
MIN
TYP
MAX
UNIT
Tilt @ VAGC = 1.6 V
4
-
5.6
dB
Gain Flatness @ VAGC = 1.6 V
-
-
2
dB
Output Return Loss over Temperature
-30 °C to +85 °C
+85 °C to +100 °C
16
15
18
-
-
dB
Attenuator Adjustment Range
18
20
-
dB
Equivalent Input Noise (EIN)
-
4.5
5.5
pA/rt Hz
Equivalent Input Noise over Temperature
-
5.0
-
pA/rt Hz
4
Data Sheet
COMMENTS
VAGC = 0.5 V to 3.0 V
Temperature range of -30
to +100 °C
September 19, 2016 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 204210B
ACA2604
+5V
+5V
0.01 uF
0.01 uF
680 nH
470 pF
RF Input
4:1
Balun
270 nH
180 pF
18 nH
18 nH
1:1
Balun
Atten
470 pF
RF Output
180 pF
680 nH
270 nH
0.01 uF
0.01 uF
+5V
+5V
VAGC
Figure 3: Test Circuit
Data Sheet
204210B • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • September 19, 2016
5
ACA2604
PERFORMANCE DATA
Performance data on this page measured using application circuit with input photodiode, as shown in Figure 11.
Figure
vs.Frequency
Frequency
Figure4:
4: Z21
Z21 vs.
over Vover
AGC VAGC
o CC = +5V )
+25C,V
(TA( T=A =+25
C, VCC = + 5 V)
30
Vagc=0.0V
25
Vagc=0.2V
Vagc=0.4V
Vagc=0.6V
Z21 ( Ampere/Watt )
20
Vagc=0.8V
Vagc=1.0V
Vagc=1.2V
Vagc=1.4V
15
Vagc=1.6V
Vagc=1.8V
Vagc=2.0V
Vagc=2.2V
10
Vagc=2.4V
Vagc=2.6V
Vagc=2.8V
5
Vagc=3.0V
0
0
100
200
300
400
500
600
700
800
900
1000
Frequency ( MHz )
Figure
5: 5:
Output
Loss
vs. Frequency
over VAGC
Figure
Output Return
Return Loss
vs. Frequency
over VAGC
+25C,oC,
VCCV
= CC
+5V)= + 5 V)
(TA(T=A =+25
-5
-10
Vagc=0.0V
Vagc=0.2V
Vagc=0.4V
-15
Vagc=0.6V
Vagc=0.8V
S22 (dB)
Vagc=1.0V
-20
Vagc=1.2V
Vagc=1.4V
Vagc=1.6V
-25
Vagc=1.8V
Vagc=2.0V
Vagc=2.2V
Vagc=2.4V
-30
Vagc=2.6V
Vagc=2.8V
Vagc=3.0V
-35
-40
0
100
200
300
400
500
600
700
800
900
1000
Frequency ( MHz )
6
Data Sheet
September 19, 2016 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 204210B
ACA2604
Performance data on this page measured using test circuit shown in Figure 3.
Figure 6: CTB vs. Frequency
(79 Analog channels (55.25
to 9:
547.25
MHz),
+21 dBmV output power,
Figure
CTB vs
Frequency
79 Analog channels
(55.25 14
to 547.25MHz),
+21dBmV
output power,
14dB gain reduction by AGC
with
dB gain
reduction
by with
AGC)
-60
-61
-62
CTB (dBc)
-63
-64
-65
-66
-67
-68
-69
-70
0
100
200
300
400
500
600
Frequency (MHz)
Figure 7: Worst Case CSO vs. Frequency
(79 Analog channels
(55.25
to 547.25
MHz),
dBmV output power,
Figure
10: Worst
Case CSO
vs +21
Frequency
79 Analog channels (55.25
547.25MHz),
+21dBmV
output power,
14dB gain reduction by AGC
withto14
dB gain
reduction
bywith
AGC)
-60
-62
-64
-66
-68
wst CSO (dBc)
-70
-72
-74
-76
-78
-80
-82
-84
-86
-88
-90
0
100
200
300
400
500
600
Frequency (MHz)
Data Sheet
204210B • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • September 19, 2016
7
ACA2604
Performance data on this page measured using application circuit with input photodiode, as shown in Figure 11.
Figure
8: CTB
Frequency
vs. POPT vs. POPT
Figure
11:vs.
CTB
vs. Frequency
(79 Analog channels
(55.25
to 547.25
MH),
+17 dBmV
at 109.25
MHz, 3.5%
79 Analog
channels
(55.25 to
547.25MH),
+17dBmV
@ 109.25MHz,
3.5% OMI/ch)
OMI/ch
-60
Popt = -7dBm
Popt = 0dBm
Popt = +2dBm
CTB (dBc)
-65
-70
-75
-80
0
100
200
300
400
500
600
Frequency (MHz)
Figure
9: CSO
Frequency
vs. POPT vs. Popt
Figure
12:vs.
CSO
vs. Frequency
79 Analog
channels
(55.25 to
547.25MH),
+17dBmV
@ 109.25MHz,
3.5% OMI/ch)
OMI/ch
(79 Analog channels
(55.25
to 547.25
MH),
+17 dBmV
at 109.25
MHz, 3.5%
-60.00
Popt = -7dBm
Popt = 0dBm
Popt = +2dBm
CSO (dBc)
-65.00
-70.00
-75.00
-80.00
0
100
200
300
400
500
600
Frequency (MHz)
8
Data Sheet
September 19, 2016 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 204210B
ACA2604
Performance data on this page measured using application circuit with input photodiode, as shown in Figure 11.
Figure
Equivalent
Input
Noise
vs. Frequency
Figure13:
10: Equivalent
Input
Noise
vs. Frequency
= +25
C,CCVcc
+5V,
VAGC
= +3V)
(TA(T
= A25
°C,oV
= +5=V,
VAGC
= +3.0
V)
6
5
EIN (pA/rtHz)
4
3
2
1
0
0
100
200
300
400
500
600
700
800
900
1000
Frequency (MHz)
Data Sheet
204210B • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • September 19, 2016
9
September 19, 2016 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 204210B
A
PD
PD_12V
K
C5
24nH
18nH
0.1uF
L4
C1
1.1pF
24nH
L3
R1
1000
L2
18nH
L1
C17
DNI
R8
FB2
C16
DNI
C4
1000pF
GND
NC
RFIN1
7 NC
6 RFIN2
5 NC
4
3
2
1 NC
+5V
0.01uF
C6
L5
180nH
C2
470pF
C3
470pF
180nH
8
VCC_IN2
DNI
2
R2
1
FB1
1000
L6
28
VCC_IN1
C7
DNI R6
0.01uF
C9
VAGC
C8
0.01uF
1uF
L13
FB3
R3
ACA2604
11 GND
27
NC
25
GND
20
DNI R5
23
13 GND
26
IADJ_IN
10
GND
9
VAGC
DNI R4
C18
R7
C19
DNI
VCC_OUT2
RF_OUT2
GND
GND
GND
RF_OUT1
VCC_OUT1
15
16
17
18
19
20
21
U1
+5V
L7
L8
24
VCC_AGC
12 I_ADJ_OUT
DNI
180nH
180nH
22
GND
GND
14
NC
DNI
C12
DNI
C13
270pF
C14
270pF
1uF
MABA-009921-CT1A40
T1
1
7.5nH
L9
2
1
PE4504
J1
75-CONNECT
2
C20
NC
1
PD_12V
1
NC
2
C10
0.01uF
C11
0.01uF
C21
Data Sheet
+
2
J3
3
NC
VAGC
+5V
VDD+5V
J2
3
10
4
VDD+5V
ACA2604
APPLICATION INFORMATION
Figure 11: Application Circuit
5
4
PD070-HL1-300/PD070-HL2-300
ACA2604
Figure 12: Evaluation Board Layout
Data Sheet
204210B • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • September 19, 2016
11
ACA2604
Table 9: Evaluation Board Parts List for 50 - 1000 MHz Applications
REF
DESCRIPTION
C1
CHIP CAP 0402
1
1.1pF
MURATA ELECTRONICS GRM1555C1H1R1JZ01
C2-C3
CHIP CAP 0402
2
470pF
MURATA ELECTRONICS GRM1555C1H471GA01
C4
CHIP CAP 0603
1
1000pF MURATA ELECTRONICS GRM1885C1H102JA01D
C5
CHIP CAP 0603
1
0.1uF
MURATA ELECTRONICS GRM188F51C104ZA01D
C6-C7-C8-C10-C11 CHIP CAP 0603
5
0.01uF
MURATA ELECTRONICS GRM1885C1HR50CZ01D
C9-C20
CHIP CAP 0603
2
1uF
MURATA ELECTRONICS GRM188R61C105KA93D
C13-C14
CHIP CAP 0603
2
270pF
MURATA-ELECTRONICS GRM155R7H271KA01D
C21
ELECTROLITIC CAP
1
47uF
PANASONIC-ACG
L10-L12
EMI FERRITE CHIP
2
MURATA ELECTRONICS BLM15HD182SN
L13
EMI FERRITE CHIP
1
MURATA ELECTRONICS BLM15HG102SN1D
L1-L2
INDUCTOR 0603HP
2
18nH
COILCRAFT
0603HP-18NX_L
L3-L4
INDUCTOR 0603HP
2
24nH
COILCRAFT
0603HP-24NX_L
L5-L6-L7-L8
INDUCTOR 0603LS
4
180nH
COILCRAFT
0603LS-181X_L
L9
CHIP INDUCTOR 0603
1
7.5nH
MURATA
LQG18HN7N5J00
D1
ANALOG PHOTODIODE
1
EGTRAN
PD070-HL1-300 or
PD070-HL2-300
R1-R2
CHIP RESISTOR 0603
2
1000
PANASONIC-ECG
ERJ-2GEJ102X
R3
CHIP RESISTOR 0603
1
20
PANASONIC-ECG
ERT-3GEYJ200W
T1
1:1 BALUN TRANSFORMER
1
M/A-COM
MABA-009921-CT1A40
J1
75 OHMS, N-MALE
TYPE CONNECTOR
1
PASTERNACK INTERPRISES
PE4504
J2
END LAUNCH
1
J3
END LAUNCH
1
U1
ACA2604 IC
1
Skyworks
ACA2604
12
QTY VALUE VENDOR
Data Sheet
VENDOR PART NO.
ECA-1EM470B
September 19, 2016 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 204210B
ACA2604
PACKAGE OUTLINE
Figure 13: S29 Package Outline - 28 Pin 5 mm x 5 mm x 1 mm QFN
Data Sheet
204210B • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • September 19, 2016
13
ACA2604
Figure 14: PCB Metal and Solder Mask Details
14
Data Sheet
September 19, 2016 • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • 204210B
ACA2604
ORDERING INFORMATION
ORDER NUMBER
ACA2604RS29P8
TEMPERATURE
RANGE
PACKAGE
DESCRIPTION
COMPONENT PACKAGING
-40 °C to +110 °C
RoHS-Compliant
28 Pin QFN
5 mm x 5 mm x 1 mm
Tape and Reel, 2500 pieces per Reel
Data Sheet
204210B • Skyworks Proprietary and Confidential Information • Products and Product Information are Subject to Change Without Notice • September 19, 2016
15
ACA2604
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materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be
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Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Data Sheet
204210B • September 19, 2016
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