HITTITE HMC759LP3E_10

HMC759LP3E
v00.0909
Attenuators - DIGITAL - SMT
8
0.25 dB LSB BiCMOS MMIC 7-BIT
DIGITAL ATTENUATOR, 10 - 300 MHz
Typical Applications
Features
The HMC759LP3E is ideal for:
0.25 dB LSB Steps to 31.75 dB
• Cellular/3G Infrastructure
Power-Up State Selection
• WiBro / WiMAX / 4G
High Input IP3: +40 dBm
• Microwave Radio & VSAT
TTL/CMOS Compatible, Serial Control
• Test Equipment and Sensors
Excellent State & Step Accuracy ±0.25 dB
• IF & RF Applications
Single +5V Supply
16 Lead 3x3mm SMT Package: 9mm2
Functional Diagram
General Description
The HMC759LP3E is a 7-bit BiCMOS Digital
Attenuator in a low cost leadless SMT package. This
versatile digital attenuator incorporates off-chip AC
ground capacitors for near DC operation, making it
suitable for a wide variety of RF and IF applications.
The control interface is CMOS/TTL compatible and
accepts a three wire serial input. The HMC759LP3E
features user selectable power up states and a serial
output port for cascading other Hittite serial controlled
components. The HMC759LP3E is housed in a
RoHS compliant 3x3 mm QFN leadless package, and
occupies only 9 mm2.
Electrical Specifications
TA = +25 °C, 50Ω System, with Vdd1 = Vdd2 = +5V & Vctl = 0/+5V
Parameter
8-1
Frequency (MHz)
Min.
Typ.
Max.
Units
4.5
dB
Insertion Loss
10 - 300
3.3
Attenuation Range
10 - 300
31.75
dB
Return Loss (RF1, RF2, All Atten. States)
10 - 300
10
dB
Attenuation Accuracy: (Referenced to Insertion Loss)
All Attenuation States
10 - 300
± (0.05 + 1.5% of Atten. Settling) Max.
dB
Input Power for 1 dB Compression
10 - 50
50 - 300
20
21
dBm
dBm
Input Third Order Intercept Point
(Two-Tone Input Power = 0 dBm Each Tone)
10 - 50
50 - 300
39
>40
dBm
dBm
Bias Current (Idd1 + Idd2)
10 - 300
Switching Time (50% LE to 90% RF)
10 - 300
300
650
15
1000
µA
ns
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
HMC759LP3E
v00.0909
0.25 dB LSB BiCMOS MMIC 7-BIT
DIGITAL ATTENUATOR, 10 - 300 MHz
Insertion Loss vs. Temperature
(Only Major States are Shown)
+25C
+85C
-40C
-1
-2
-3
-4
-5
8 dB
-20
-25
0.1
0.15
0.2
0.25
0.3
0.35
31.75 dB
-30
-35
0.05
16 dB
-15
-5
0
4 dB
-10
0.4
0
0.05
0.1
FREQUENCY (GHz)
0.15
0.2
0.25
0.3
0.35
0.4
FREQUENCY (GHz)
Input Return Loss [1]
Output Return Loss [1]
(Only Major States are Shown)
(Only Major States are Shown)
-5
-5
-15
RETURN LOSS (dB)
RETURN LOSS (dB)
-10
4 dB
8 dB
-20
-25
16 dB
-10
0 dB
Attenuators - DIGITAL - SMT
0
NORMALIZED ATTENUATION (dB)
0
INSERTION LOSS (dB)
8
Normalized Attenuation [1]
[1]
-15
-30
31.75 dB
-35
0
0.05
0.1
0.15
0.2
0.25
31.75 dB
0.3
0.35
-20
0.4
0
0.05
0.1
FREQUENCY (GHz)
0.25
0.3
0.35
0.4
0.3
0.35
0.4
Bit Error vs. Frequency [2]
(Only Major States are Shown)
[2]
0.5
0.5
0.25
0.25
BIT ERROR (dB)
BIT ERROR (dB)
0.2
FREQUENCY (GHz)
Bit Error vs. Attenuation State
300 MHz
0.15
200 MHz
0
-0.25
31.75 dB
0
-0.25
10 MHz
-0.5
-0.5
0
4
8
12
16
20
24
28
32
ATTENUATION STATE (dB)
0
0.05
0.1
0.15
0.2
0.25
FREQUENCY (GHz)
[1] Data taken with broadband DC blocking on RF input and output ports.
[2] C1, C2 = 10nF
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
8-2
HMC759LP3E
v00.0909
0.25 dB LSB BiCMOS MMIC 7-BIT
DIGITAL ATTENUATOR, 10 - 300 MHz
Worst Case Step Error
Between Successive Attenuation States [1]
IP3 vs. Attenuation States [1]
(Only Major States are Shown)
0.2
60
0.15
55
0.1
16 dB
50
0.05
IP3 (dBm)
STEP ERROR (dB)
0
-0.05
8 dB
31.75 dB
45
40
0 dB
35
-0.1
30
-0.15
31.75 dB
-0.2
0
0.05
0.1
25
0.15
0.2
0.25
0.3
0.35
0.4
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
FREQUENCY (GHz)
FREQUENCY (GHz)
Input P1dB vs. Attenuation States [1][2]
(Only Major States are Shown)
24
8 dB
4 dB
22
P1dB (dBm)
Attenuators - DIGITAL - SMT
8
20
16 dB
18
16
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
FREQUENCY (GHz)
Serial Control Interface
The HMC759LP3E contains a 3-wire
SPI compatible digital interface
(SERIN, CLK, LE). The 7-bit serial
word must be loaded MSB first.
The positive-edge sensitive CLK
and LE requires clean transitions.
If mechanical switches are used,
sufficient debouncing should be
provided. When LE is high, 7-bit
data in the serial input register is
transferred to the attenuator. When
LE is high, CLK is masked to prevent
data transition during output loading.
[1] C1, C2 = 10nF
[2] Part does not enter 1 dB compression at 31.75 dB max attenuation up to 25 dBm input power.
8-3
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
HMC759LP3E
v00.0909
0.25 dB LSB BiCMOS MMIC 7-BIT
DIGITAL ATTENUATOR, 10 - 300 MHz
Vdd (V)
Idd (Typ.) (µA)
Parameter
Typ.
4.5
580
Min. serial period, tSCK
100 ns
5.0
650
Control set-up time, tCS
20 ns
5.5
710
Control hold-time, tCH
20 ns
LE setup-time, tLN
10 ns
Min. LE pulse width, tLEW
10 ns
Min LE pulse spacing, tLES
630 ns
Serial clock hold-time from LE, tCKN
10 ns
Control Voltage Table
State
Vdd = +5V
Low
0 to 0.8V @ <1 µA
High
2 to 5V @ <1 µA
Power-Up States
PUP Truth Table
If LE is set to logic LOW at power-up, the logic state
of PUP1 and PUP2 determines the power-up state
of the part per PUP truth table. If the LE is kept high
at power up, power up state will be indeterminate
therefore is not recommended.
LE
PUP1
PUP2
Relative Attenuation
0
0
0
-31.75
0
1
0
-24
0
0
1
-16
0
1
1
Insertion Loss
1
X
X
Indeterminate
Power-On Sequence
Attenuators - DIGITAL - SMT
8
Bias Voltage
The ideal power-up sequence is: GND, Vdd, digital
inputs, RF inputs. The relative order of the digital
inputs are not important as long as they are powered
after Vdd / GND
Truth Table
Control Voltage Input
Reference
Insertion Loss
(dB)
D6
D5
D4
D3
D2
D1
D0
High
High
High
High
High
High
High
0
High
High
High
High
High
High
Low
0.25
High
High
High
High
High
Low
High
0.5
High
High
High
High
Low
High
High
1
High
High
High
Low
High
High
High
2
High
High
Low
High
High
High
High
4
High
Low
High
High
High
High
High
8
Low
High
High
High
High
High
High
16
Low
Low
Low
Low
Low
Low
Low
31.75
Any combination of the above states will provide an attenuation equal to the sum of the bits selected.
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
8-4
HMC759LP3E
v00.0909
0.25 dB LSB BiCMOS MMIC 7-BIT
DIGITAL ATTENUATOR, 10 - 300 MHz
Attenuators - DIGITAL - SMT
8
Absolute Maximum Ratings
RF Input Power (RF1, RF2)
20 dBm (T = +85 °C)
Digital Inputs
(SERIN LE, CLK, PUP1, PUP2)
-0.5 to Vdd +0.5V
Bias Voltage (Vdd)
5.6V
Channel Temperature
125 °C
Continuous Pdiss (T = 85 °C)
(derate 9.8 mW/°C above 85 °C)
0.29 W
Thermal Resistance
(channel to ground paddle)
138 °C/W
Storage Temperature
-65 to +150 °C
Operating Temperature
-40 to +85 °C
ESD Sensitivity (HBM)
Class 1A
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
Outline Drawing
NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS]
3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE.
4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM.
PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM.
5. PACKAGE WARP SHALL NOT EXCEED 0.05mm.
6. ALL GROUND LEADS AND GROUND PADDLE MUST BE
SOLDERED TO PCB RF GROUND.
7. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED
LAND PATTERN.
Package Information
Part Number
Package Body Material
Lead Finish
HMC759LP3E
RoHS-compliant Low Stress Injection Molded Plastic
100% matte Sn
MSL Rating
MSL1
[2]
Package Marking [1]
759
XXXX
[1] 4-Digit lot number XXXX
[2] Max peak reflow temperature of 260 °C
8-5
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
HMC759LP3E
v00.0909
0.25 dB LSB BiCMOS MMIC 7-BIT
DIGITAL ATTENUATOR, 10 - 300 MHz
Pin Number
Function
Description
1
Vdd1
This pin should be pulled high to
Vdd through a 39 kΩ resistor.
2
SERIN
3
LE
4
CLK
5
PUP1
6
PUP2
7
SEROUT
Serial input data delayed by 7 clock cycles.
8, 13
RF1,
RF2
This pin is DC coupled and matched to
50 Ohms. Blocking capacitors are required.
9 - 12
ACG0 - 3
External capacitors to ground are required. Place
these capacitors close to the package.
14
GND
This pin and package bottom must
be connected to RF/DC ground.
15
Vdd2
Supply voltage.
16
N/C
This pin is not connected internally; however, all data
shown herein was measured with this pin connected
to RF/DC ground externally.
Interface Schematic
See Truth Table, Control Voltage Table
and Timing Diagram.
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
Attenuators - DIGITAL - SMT
8
Pin Descriptions
8-6
HMC759LP3E
v00.0909
0.25 dB LSB BiCMOS MMIC 7-BIT
DIGITAL ATTENUATOR, 10 - 300 MHz
Application Circuit
Attenuators - DIGITAL - SMT
8
8-7
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
HMC759LP3E
v00.0909
0.25 dB LSB BiCMOS MMIC 7-BIT
DIGITAL ATTENUATOR, 10 - 300 MHz
8
Attenuators - DIGITAL - SMT
Evaluation PCB
List of Materials for Evaluation PCB 125228 [1]
Item
Description
J1, J2
PCB Mount SMA Connector
J3
18 Pin DC Connector
J4, J5
DC Pin
C1 - C6
10 nF Capacitor, 0402 Pkg.
C7, C8
100 pF Capacitor, 0402 Pkg.
C9
1 nF Capacitor, 0402 Pkg.
C10
4.7 µF Capacitor, 0805 Pkg.
R1 - R4
39K Ohm Resistor, 0402 Pkg.
U1
HMC759LP3E Digital Attenuator
PCB [2]
125226 Evaluation PCB
The circuit board used in the final application
should use RF circuit design techniques. Signal
lines should have 50 Ohm impedance while the
package ground leads and exposed paddle should
be connected directly to the ground plane similar
to that shown. A sufficient number of via holes
should be used to connect the top and bottom
ground planes. The evaluation circuit board shown
is available from Hittite upon request.
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Arlon 25FR or Rogers 4350
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or [email protected]
8-8