RFMD Datasheet

QPC6614
5 MHz to 6000 MHz, Digital Step Attenuator
N/C
N/C
N/C
N/C
N/C
N/C
The QPC6614 is a 6-bit digital step attenuator (DSA) that
features high linearity over the entire 31.5 dB gain control
range with 0.5 dB steps. The QPC6614 uses serial control
interface. The QPC6614 has a low insertion loss of 1.4 dB at
2 GHz. Patented circuit architecture provides overshoot-free
transient switching performance. The QPC6614 is available
in a 4.2 mm x 4.2 mm MCM package.
24
23
22
21
20
19
Package: MCM, 24-pin,
4.2 mm x 4.2 mm x 0.975 mm
Features
■
6-Bit, 31.5 dB, 0.5 dB Step
■
Patented Circuit Architecture
■
Overshoot-free Transient Switching
Performance
■
Frequency Range 5 MHz to 6000 MHz
■
High Linearity, IIP3 >+55 dBm
18
VDD
■
Serial Control Interface
17
N/C
■
3
16
PUP2
Fast Switching Speed, <120 nsec
Typical
LE
Single Supply 3 V to 5 V Operation
15
N/C
■
4
■
GND
5
14
GND
RF Pins Have No DC Voltage, Can be
DC Grounded Externally
ATTIN
6
13
ATTOUT
■
Power-up attenuation state
programmable
6-BIT DSA
N/C
7
8
9
10
11
12
Applications
N/C
SERIN
LOGIC CONTROL
N/C
2
N/C
CLK
N/C
1
N/C
N/C
Functional Block Diagram
Ordering Information
QPC6614SQ
QPC6614SR
QPC6614TR13
QPC6614PCK401
■
2G through 4G Base Stations
■
Point-to-Point
■
WiFi
■
Test Equipment
Sample bag with 25 pieces
7" Reel with 100 pieces
13" Reel with 2500 pieces
5 MHz to 6000 MHz PCBA w/ 5-piece
sample bag
Revision DS20150821
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QPC6614
Absolute Maximum Ratings
Caution! ESD sensitive device.
Rating
Units
Supply Voltage (VDD)
Parameter
−0.5 to +6.0
V
All Other DC and Logic Pins ( When VDD Is Applied Prior to Any
Other Pin Voltages)
−0.5 to VDD
V
All Other DC and Logic Pins (When VDD Is Not Applied Prior to
Any Other Pin Voltages)
−0.5 to +4.0
V
Maximum Input Power at ATTIN Pin at +85°C Case Temperature
+30
dBm
Maximum Input Power at ATTOUT Pin at +85°C Case
Temperature
+27
dBm
−40 to +150
°C
ESD Rating - Human Body Model (HBM)
1000
V
Moisture Sensitivity Level
MSL2
Storage Temperature Range
RFMD Green: RoHS status based on EU
Directive 2011/65/EU (at time of this
document revision), halogen free per IEC
61249-2-21, < 1000ppm each of antimony
trioxide in polymeric materials and red
phosphorus as a flame retardant, and <2%
antimony in solder.
Exceeding any one or a combination of the Absolute Maximum
Rating conditions may cause permanent damage to the device.
Extended application of Absolute Maximum Rating conditions
to the device may reduce device reliability. Specified typical
performance or functional operation of the device under
Absolute Maximum Rating conditions is not implied.
Recommended Operating Condition
Specification
Parameter
Min
Operation Temperature Range
(Derate RF Input Power Handling Above 85 °C)
Typ
−40
Operating Junction Temperature
Supply Voltage
Revision DS20150821
© 2015 RF Micro Devices, Inc.
+2.7
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Units
Max
+105
°C
+125
°C
+5.5
V
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QPC6614
Electrical Specifications
Specification
Parameter
Min
Typ
Units Condition
Max
General Performance
Supply Current
180
µA
Thermal Resistance
60
°C/W
RF Input Power at ATTIN Pin
+27
dBm
RF Input Power at ATTOUT Pin
+20
dBm
RF Performance
Frequency Range
5
1.4
Attenuation Range
31.5
Absolute Attenuation Error
MHz
2.4
dB
0 dB attenuation
dB
0.5 dB step size
0.3 ± 3%
dB
+55
dBm
Input P0.1dB
+30
dBm
Return Loss
15
dB
Input and Output Impedance
50
Ω
Switching Speed
120
nsec
2
Deg
Successive Step Phase Delta
Control
50 % control to 10 % / 90 % RF
Serial Bus and PUP2 Pins
Digital Logic Low
© 2015 RF Micro Devices, Inc.
Continuous operation at +85 °C case temperature
6000
Input IP3
Revision DS20150821
At maximum attenuation state with RF power applied to the ATTIN pin
Typical Performance at 2000 MHz, VSUPPLY=+5 V, Temp. = +25°C
Insertion Loss
Digital Logic High
Steady state operation, current draw during attenuation state transitions is higher
+0.63
+1.17
V
V
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QPC6614
RF Performance Plots
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QPC6614
RF Performance Plots
Note: Attenuator remains monotonic if step error is less than +0.5dB.
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QPC6614
RF Performance Plots
Note: Attenuator remains monotonic if step error is less than +0.5dB
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QPC6614
RF Performance Plots
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QPC6614
Typical Application Schematic
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QPC6614
Evaluation Board Schematic
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QPC6614
Evaluation Board Bill of Materials (BOM)
Description
Reference Designator
QPC6614-410
Digital Step Attenuator 5 MHz to 6000 MHz
U1
CONN, SMA, END LNCH, UNIV, HYB MNT, FLT
Manufacturer
Manufacturer's P/N
ViaSystems
QPC6614-410(A)
Qorvo
QPC6614SB
J1- J4
Molex
SD-73251-4000
CAP, 1µF, 10%, 25V, X7R, 1206
C1
Taiyo Yuden (USA), Inc.
CE TMK316B7105KL-T
CAP, 1000pF, 10%, 50V, X7R, 0402
C6
TDK Corporation
C1005X7R1H102KT000F
CONN, SKT, 24-PIN DIP, .600", T/H
P2
Aries Electronics Inc.
24-6518-10
MOD, USB TO SERIAL UART, SSOP-28
M1 (See Note Below)
Future Technology Devices Int'l
UM232R
CONN, HDR, ST, 4-PIN, 0.100"
P3
SAMTEC INC.
TSW-104-08-S-S
CONN, HDR, 2 X 4, RA, 0.100, T/H
P1
SAMTEC INC.
TSW-104-08-G-D-RA
C2- C5, C7
NA
NA
DNP
Notes:
1. M1 should be mounted into P2 with respect to the Pin 1 alignment of M1 and P2.
Evaluation Board Assembly Drawing
Revision DS20150821
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QPC6614
Evaluation Board Programming Using USB Interface
Serial Mode
Refer to the Control Bit Generator (CBG) Software Reference Manual for detailed instructions on how to setup
the software for use. Apply the supply voltage to P3. Select QPC6614 from the RFMD Parts List of the CBG
user interface. Set the attenuation value using the CBG user interface. The attenuator is set to the desired state
and measurements can be taken.
Evaluation Board Programming Using External Bus
Serial Mode
This configuration allows the user to control the attenuator through the P1 connector using an external
harness. Remove the USB interface board if it is currently installed on the evaluation board. Connect a
user-supplied harness to the P1 connector. Note the top row of the P1 contains the serial bus signals and
the bottom row is ground. Apply the supply voltage to P3. Send the appropriate signals onto the serial bus
lines in accordance with the Serial Mode Timing Diagram. The attenuator is set to the desired state and
measurements can be taken.
Default Power-up State
The attenuation state set during power-up can be controlled using the PUP2 pin. To power-up in the maximum
attenuation state, apply a logic low to PUP2 pin prior to applying supply voltage VDD. To power-up in the
minimum attenuation state apply a logic high to the PUP2 pin prior to applying supply voltage VDD.
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QPC6614
Pin Names and Descriptions
Pin
Name
Description
1
NC
No Internal Connection
2
CLK
Serial Clock Input
3
SERIN
Serial Data Input
4
LE
5
GND
6
ATTIN
7
NC
No Internal Connection
8
NC
No Internal Connection
Latch Enable
Connect to PCB Ground
RF Input Pin. Incident RF power must enter this pin for rated thermal performance and reliability. Do not apply
DC power to this pin. Pin may be DC grounded externally and is grounded thru resistors internal to the part.
9
NC
No Internal Connection
10
NC
No Internal Connection
11
NC
No Internal Connection
12
NC
No Internal Connection
13
ATTOUT
14
GND
Connect to PCB Ground
15
NC
No Internal Connection
16
PUP2
17
NC
18
VDD
19
NC
No Internal Connection
20
NC
No Internal Connection
21
NC
No Internal Connection
22
NC
No Internal Connection
23
NC
No Internal Connection
24
NC
No Internal Connection
Revision DS20150821
© 2015 RF Micro Devices, Inc.
RF Output Pin. Do not apply DC power to this pin. Pin may be DC grounded externally and is grounded thru
resistors internal to the part.
Power-up Programming Pin. See Default Power-up State Section for use.
No Internal Connection
Supply Voltage
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QPC6614
Serial Mode Attenuation Word Truth Table
Attenuation Word
Serial Mode Timing Diagram
Attenuation State
(dB)
LE
H
0dB / Reference
Insertion Loss
CLK
H
L
0.5 dB
H
L
H
1 dB
H
L
H
H
2 dB
H
L
H
H
H
4 dB
L
H
H
H
H
8 dB
L
H
H
H
H
H
16 dB
L
L
L
L
L
L
31.5 dB
D5
(MSB)
D4
D3
D2
D1
D0
(LSB)
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
Serial Bus Timing Specifications
Parameter
Limit
Units
Comment
t1
25
MHz max
CLK Frequency
SERIN
X
D5
D4
20
ns min
CLK High
t3
20
ns min
CLK Low
t4
5
ns min
SERIN to CLK Setup Time
t5
5
ns min
SERIN to CLK Hold Time
t6
30
ns min
SERIN Valid
t7
5
ns min
LE to CLK Setup Time
t8
5
ns min
CLK to LE Setup Time
t9
10
ns min
LE Pulse Width
Revision DS20150821
© 2015 RF Micro Devices, Inc.
D2
D0
D1
X
Serial Bus Timing Diagram
t6
t1
t2
t2
D3
t4
t3
t5
t8
CLK
SERIN
t7
LE
t9
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QPC6614
(0.275)
4x 0.250
(0.70)
B
4x 0.750
0.975±0.075
A
4x 1.250
4.20
12x 2.000
Package Outline
PIN 1 INDICATOR
12x 2.000
Pin 1
24x
0.10 C A B
4x 1.250
4x 0.750
SEATING PLANE
4x 0.250
0
(2.800)
4.20
12X 1.800
0.10 C A B
(0.100
All Edges)
12X 1.800
0
0.06
C
(2.800)
TOP VIEW
BOTTOM VIEW
(0.400)
0.200 x 0.200
(0.250)
Notes:
1. Dimensions in millimeters
Branding Diagram
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QPC6614
Contact Information
For the latest specifications, additional product information, worldwide sales and distribution locations:
Web: www.rfmd.com
Email: [email protected]
Tel: 1-844-890-8163
For information about the merger of RFMD and TriQuint as Qorvo:
Web:
www.qorvo.com
Important Notice
The information contained herein is believed to be reliable. RFMD and/or Qorvo make no warranties regarding the information
contained herein. RFMD and/or Qorvo assumes no responsibility or liability whatsoever for any of the information contained
herein. RFMD and/or Qorvo assumes no responsibility or liability whatsoever for the use of the information contained herein.
The information contained herein is provided "AS IS, WHERE IS" and with all faults, and the entire risk associated with such
information is entirely with the user. All information contained herein is subject to change without notice. Customers should
obtain and verify the latest relevant information before placing orders for RFMD and/or Qorvo products. The information
contained herein or any use of such information does not grant, explicitly or implicitly, to any party any patent rights, licenses,
or any other intellectual property rights, whether with regard to such information itself or anything described by such
information.
RFMD and/or Qorvo products are not warranted or authorized for use as critical components in medical, life-saving, or lifesustaining applications, or other applications where a failure would reasonably be expected to cause severe personal injury
or death.
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