Hi Dyn Range 2 Channel IF Amp with
Power Control, 100 - 400 MHz
V 2.00
AM55-0024
Features
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Functional Block Diagram
IF in A
Logic
Interface
Attenuation: 0.5 dB steps to 31.5 dB
6 Bit Digital Gain Control
CMOS Logic
Serial Logic Interface
Single Positive Voltage Supply
8 mm PBGA Package
JEDEC MO-151 Footprint
Single Package Solution for GSM,CDMA,PCS
IF out A
IF in B
IF out B
Description
The M/A-COM AM55-0024 is a dual channel IF amplifier
and digital attenuator packaged in a multi-layer multi-chip
module (MCM). Gain control is via two separate serial
logic interfaces. The part utilizes Plastic Ball Grid Array
(PBGA) interconnect technology to achieve high circuit
density and superior performance. This device is ideal for
GSM/DCS/PCS digital base station applications where high
dynamic range gain control functionality is required.
Absolute Maximum Ratings
1
Parameter
Input Power
2
Operating Voltage
2
Operating Temperature
Storage Temperature
Absolute Maximum
+20 dBm
V
DD
= +6 V
-40°C to +85°C
-65°C to +150°C
1. Exceeding any one or combination of these limits may
cause permanent damage.
2. Ambient Temperature (T
A
) = +25°C.
Electrical Specifications: T
A
= 25°C, Z
0
= 50Ω
Parameter
Gain
Gain Control Range
Minimum Gain Control Step Size
Return Loss
Output IP
3
Supply Voltage
Supply Current
Switching Speed (50% TTL to 90% RF)
Isolation
P1 dB
Noise Figure
1. All measurements in a 50 Ohm system.
100 - 400 MHz
@ 3V / @ 5V
Test Conditions
100 - 400 MHz
100 - 400 MHz
100 - 400 MHz
100 - 400 MHz
100 - 400 MHz @ 5V
1
Units
dB
dB
dB
dB
dBm
V
mA
nS
dBc
dBm
dB
50
15
10
Min.
19.5
Typ.
21
31.5
0.5
12
30
3/5
300/400
50
60
17.5
4
Max.
22.5
Hi Dyn Range 2 Channel IF Amp w/Pwr Cntrl, 100 - 400 MHz
External Components
1, 2, 3
3V
A1
3V
A2
3V
B1
3V
B2
AM55-0024
V 2.00
Clock Diagram
1, 2, 3, 4, 5
Data
3V A3
IF In A
IF Out A
Clock
AM55-0024
Latch
IF In B
IF Out B
3V B3
1.
2.
3.
4.
5.
Max Clock Speed = 40 MHz
Ton = Toff
Tsu = >3ns
Thold = >7ns
Data clocked in on rising clock edge
Latch B
Data B
Clk B
Latch A
Data A
Digital V
DD
1. All inductors are 470 nH
2. All Capacitors are 10000 pF
3. IF outputs must be supplied +3 Volts.
Component
L
C
Typical Performance Curves
Input V
SWR
3.5
3.0
3.5
Clk A
Serial Interface
Value
470 nH
10000 pF
Each channel in the AM55-0024 is independently
controllable with a 3 wire serial interface: Clock, Data,
and Latch Enable. These lines can be shared based on
application requirements. The attenuator within the
device is controlled with a 6 bit word, enabling the
selection of 64 possible states. The highest gain state is
'000000', and the lowest is '111111'. The sequence for
shifting the data is as follows: Present data (MSB first),
strobe clock, repeat until 6 bits have been presented and
clocked, then strobe the latch enable line, which
implements the state change.
Output V
SWR
3.0
VSWR (dB)
2.5
2.0
1.5
1.0
0.045
0.105
0.165
0.225
0.285
0.345
0.405
VSWR (dB)
2.5
2.0
1.5
1.0
0.045
0.105
0.165
0.225
0.285
0.345
0.405
Frequency (GHz)
Frequency (GHz)
Specifications subject to change without notice.
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North America:
Tel. (800) 366-2266
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Asia/Pacific:
Tel.+81-44-844-8296, Fax +81-44-844-8298
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Europe:
Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
2
Hi Dyn Range 2 Channel IF Amp w/Pwr Cntrl, 100 - 400 MHz
Typical Performance Curves (Cont’d)
AM55-0024
V 2.00
Attenuation (6 individual bits)
25
Gain
+85°C
23
22
+25°C
-40°C
20
Attenuation (dB)
Gain (dB)
15
21
20
19
18
10
5
0
0.05
0.11
0.17
0.23
0.29
0.35
0.41
0.045
0.105
0.165
0.225
0.285
0.345
0.405
Frequency (GHz)
Frequency (GHz)
Noise Figure
18
16
Noise Figure (dB)
14
12
10
8
6
4
2
0
0.05
0.1175
0.185
0.2525
0.32
0.3875
0.455
Frequency (GHz)
Specifications subject to change without notice.
n
North America:
Tel. (800) 366-2266
n
Asia/Pacific:
Tel.+81-44-844-8296, Fax +81-44-844-8298
n
Europe:
Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
3
Hi Dyn Range 2 Channel IF Amp w/Pwr Cntrl, 100 - 400 MHz
8 mm PBGA
AM55-0024
V 2.00
Pin Out
8
+5V_A1
7
DAT_A
6
CLK_A
5
+5V_A2
4
3
2
1
RF_OUT_A
A
B
RF_IN_A
LE_A
RF_IN_B
LE_B
CLK_B
DAT_B
+5V_B1
+5V_B2
RF_OUT_B
C
D
E
F
G
H
Ordering Information
Part Number
AM55-0024
AM55-0024TR
AM55-0024RTR
Package
8-mm PBGA Package
Forward Tape and Reel
1
Reverse Tape and Reel
1. If specific reel size is required, consult factory for part
number assignment.
Specifications subject to change without notice.
n
North America:
Tel. (800) 366-2266
n
Asia/Pacific:
Tel.+81-44-844-8296, Fax +81-44-844-8298
n
Europe:
Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
4
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