AMMC-6650 Datasheet PDF - AVAGO

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AMMC-6650
AVAGO

Part Number AMMC-6650
Description DC-40 GHz Variable Attenuator
Page 10 Pages


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AMMC-6650
DC–40 GHz Variable Attenuator
Data Sheet
Chip Size: 1530 μm x 660 µm (61.2 x 26.4 mils)
Chip Size Tolerance: ±10 µm (±0.4 mils)
Chip Thickness: 100 ± 10 µm (4 ±0.4 mils)
Pad Dimensions: 80 x 120 µm (3.2 x 4.8 mils)
Description
The AMMC-6650 is a voltage controlled variable attenua-
tor designed to operate from DC-40 GHz. It is fabricated
using Avago Technologies enhancement mode pHEMT
MMIC process with backside ground vias, and gate lengths
of approximately 0.25um. The distributed topology of the
AMMC-6650 facilitates broadband operation by absorbing
parasitic effects of its series and shunt FETs. An on-chip DC
reference circuit may be used to maintain optimum VSWR
for any attenuation setting or to provide more linear
attenuation versus voltage response.
Simplified Schematic
DC
reference circuit
RFin variable
attenuator
RFout
DCin V1 DCout V2
Features
Wide Frequency Range DC-40 GHz
Attenuation Range 20dB
Single Positive Bias Supply
Unconditionally Stable
Applications
Microwave Radio Systems
Satellite VSAT, DBS Up / Down Link
LMDS & Pt – Pt mmW Long Haul
Broadband Wireless Access (including 802.16 and
802.20 WiMax)
WLL and MMDS loops
Attention: Observe precautions for
handling electrostatic sensitive devices.
ESD Machine Model = 80 V
ESD Human Body Model = 400 V
Refer to Avago Application Note A004R:
Electrostatic Discharge, Damage and Control.
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Table 1. Absolute Maximum Ratings
Symbol
Parameters and Test Conditions
Unit
Minimum
Maximum
V1 Voltage to Control VSWR
V 0 1.6
V2 Voltage to Control Attenuation
V 0 1.6
Pin RF Input Power
dBm -
17
Tch Operating Channel Temperature
°C -
+150
Tstg Storage Temperature
°C -65 +150
Tmax Maximum Assembly Temperature
°C
+300
for 60 seconds
Notes:
Operation in excess of any one of these conditions may result in permanent damage to this device.
The absolute maximum ratings for V1, V2 and Pin were determined at an ambient temperature of 25ºC unless noted otherwise.
Table 2. DC Specifications
Symbol
Parameters
Ic_V1_ref
V1 Control Current (Min Attenuation)
Ic_V2_ref
V2 Control Current (Min Attenuation)
Ic_V1_max V1 Control Current (Max Attenuation)
Ic_V2_max V2 Control Current (Max Attenuation)
Notes:
Ambient temperature TA = 25°C
Test Conditions
Unit Min Typical Max
V1=1.5 V, V2=0 V
mA -
1.93 2.0
V1=1.5 V, V2=0 V
uA -
0.8 2.5
V1=0V, V2=1.25 V
uA
-
1.1 2.5
V1=0 V, V2=1.25 V
mA
-
1.41 1.5
Table 3. RF Specifications (TA = 25°C, Z0 = 50 )
Symbol
Parameters and Test Conditions
Minimum Attenuation
(Reference State)
|S21|
V1 = 1.5 V
V2 = 0.0 V
Maximum Attenuation
|S21|
V1 = 0.0 V
V2 = 1.25 V
Return Loss (In/Out)
at Reference State
V1=1.5 V, V2=0.0 V
Return Loss (In/Out)
at Max. Attenuation
V1=0.0 V, V2=1.25 V
Notes:
Data obtained from on-wafer measurements
Units Freq. [GHz] Minimum
dB 2
20
33
40
dB 2
24.0
20 24.5
33 26.0
40 27.0
dB <40
Typical
1.1
1.7
2.6
3.1
26.4
28.1
32.7
35.7
10
dB <40
10
Maximum
2.0
2.5
4.0
5.0
2
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Typical Distribution Charts
Figure 1d. Min Attenuation @ 2GHz, Nominal=1.1, USL=2.0
Figure 2d. Min Attenuation @ 20GHz, Nominal=1.7, USL=2.5
Figure 3d. Min Attenuation @ 33GHz, Nominal=2.6, USL=4.0
Figure 4d. Min Attenuation @ 40GHz, Nominal=3.1, USL=5.0
Figure 5d. Max Attenuation @ 2GHz, LSL=24.0, Nominal=26.4
Figure 6d. Max Attenuation @ 20GHz, LSL=24.5, Nominal=24.5
Figure 7d. Max Attenuation @ 33GHz, LSL=26.0, Nominal=32.7
Figure 8d. Max Attenuation @ 40GHz, LSL=27.0, Nominal=35.7
Notes:
1. All data from on-wafer measurements
2. Distribution data based on 5000 part sample from two wafer lots tested during initial characterization. Future wafers may have nominal values
anywhere between upper and lower limit
3
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Typical Performance (TA = 25°C, Zin = Zout = 50 )
0
10
20
30
40
50
0 10 20 30
Frequency (GHz)
Figure 1. Attenuation vs Frequency
40
Min
Min+2dB
Min+4dB
Min+6dB
Min+8dB
Min+12dB
Min+16dB
Min+20dB
Max
50
0
-10
-20
-30
-40
0
10 20 30
Frequency (GHz)
Figure 2. Input Return Loss vs Frequency
Min
Max
40 50
0
-10
-20
-30
-40
0 10 20 30
Frequency (GHz)
Figure 3. Output Return Loss vs Frequency
30
25
20
15
10
Min
Max
40 50
5
0
0 5 10 15 20 25 30
Attenuation (dB)
Figure 4. IIP3 vs Attenuation at 2 GHz (note 2)
25 25
20 20
15 15
10 10
55
0
0 5 10 15 20 25 30
Attenuation (dB)
0
0 5 10 15 20 25 30
Attenuation (dB)
Figure 5. IIP3 vs Attenuation at 12 GHz (note 2)
Figure 6. IIP3 vs Attenuation at 22 GHz (note 2)
4
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