TQM879008
®
1.4-2.7 GHz 1/2 W Digital Variable Gain Amplifier
Product Overview
The TQM879008 is a digital variable gain amplifier (DVGA)
featuring high linearity over the entire gain control range.
This amplifier module integrates two gain blocks, a digital-
step attenuator (DSA), and a high linearity ½ W amplifier.
The module has the added feature of integrating all
matching components, bias chokes and blocking
capacitors. The internal 6-bit DSA provides a 31.5 dB gain
control range in 0.5 dB steps, and is controlled with a serial
periphery interface (SPITM).
The TQM879008 features variable gain from 10 dB to
41.1dB at 2.5 GHz, +47.5 dBm output IP3, and +27.3 dBm
P1dB. The module operates from a single +5V supply and
is available in a compact 28-pin 6x6 mm leadless SMT
package.
The TQM879008 is pin compatible with the TQM829007
(0.7-1.0GHz, 0.25W DVGA) and TQM879006 (1.4-2.7GHz,
0.25W DVGA). This allows one to size the right type of
device for specific system level requirements as well as
making the DVGA family ideal for applications where a
common PCB layout is used for different frequency bands.
28-pin 6x6 mm leadless SMT Package
Key Features
•
•
•
•
•
•
•
•
1.4-2.7 GHz Frequency Range
41.1 dB Maximum Gain at 2.5 GHz
31.5 dB Gain Range in 0.5 dB Steps
+47.5 dBm Output IP3
+27.3 dBm Output P1dB
Fully Internally Matched Module
Integrated Blocking Capacitors, Bias Inductors
3-wire SPI Control Programming
Functional Block Diagram
Vcc_
SPI
27 GND
26 GND
25 GND
24 GND
23 GND
22 NC
Applications
21 GND
LE 1
DATA 2
CLK 3
NC 4
GND 5
RFIN 6
GND 7
AMP1
DC Biasing
DC Biasing
S
P
I
DSA
AMP2
Matching
AMP3
20 GND
19 GND
18 GND
17 GND
16 RFOUT
15 GND
•
•
•
•
3G / 4G Wireless Infrastructure
CDMA, WCDMA, LTE
Repeaters
ISM Infrastructure
28
Matching
GND 10
GND 11
GND 12
GND 13
Vcc_
AMP1/ 8
AMP2
GND 9
Vcc_
14
AMP3
Backside Pad
GND
Top View
Ordering Information
Part No.
TQM879008TR13
TQM879008-PCB
Description
2,500 pieces on a 13” reel (standard)
Evaluation Board, Includes USB control
board, EVH
Datasheet, January 02, 2018 | Subject to change without notice
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TQM879008
®
1.4-2.7 GHz 1/2 W Digital Variable Gain Amplifier
Recommended Operating Conditions
Rating
−55 to +150°C
+23 dBm
+5.5 V
V
CC
+0.5V
Parameter
V
CC
(pins 8, 14, 28)
Case Temperature
Tj (for>10
6
hours MTTF
)
Min
+4.75
−40
Typ
+5.0
Max
+5.25
+85
170
Units
V
°C
°C
Absolute Maximum Ratings
Parameter
Storage Temperature
RF Input Power, 50Ω, T = 25°C
V
DD
, Power Supply Voltage
Digital Input Voltage
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.
Electrical specifications are measured at specified test conditions.
Specifications are not guaranteed over all recommended operating
conditions.
Electrical Specifications
Parameter
Operational Frequency
Range
Test Frequency
Gain
Gain Control Range
Attenuation Accuracy
Control Interface
Input Return Loss
Output Return Loss
Output P1dB
Output IP3
Noise Figure
I/O Impedance
Supply Voltage
Supply Current
Thermal Resistance, θ
jc
Conditions
(1)
Min
1400
Typ
Max
2700
Units
MHz
dB
dB
dB
Bit
dB
dB
dBm
dBm
dB
Ω
320
20.5
V
mA
°C/W
0.5 dB Step Size
3 wire SPI, 6 states
3-wire SPI
2500
38
41.1
44
31.5
± (0.3 + 5% of Atten. Setting) Max
6
16
14
+27.3
+47.5
3.9
50
+5
285
Pout =+11 dBm/tone, ∆f=1MHz
+41
220
Module (junction to case)
Notes:
1. Test conditions unless otherwise noted: V
CC
= +5.0 V, Temp = +25 °C, 50 Ω system.
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TQM879008
®
1.4-2.7 GHz 1/2 W Digital Variable Gain Amplifier
TQM879008-PCB Evaluation Board
J3-10
J3-11
J3-12
J3-13
J3-14
J3-15
J3-16
J3-17
J3-18
J3-19
GND
DATA
Vcc_AMP
SPI_Vcc
CLK
LE
GND
J3
C8
0.1uF
SPI_Vcc
GND
GND
GND
GND
GND
NC
SPI_LE
GND
SPI_DATA
GND
SPI_CLK
U1
6X6_ 28PIN
GND
C8
NC
GND
J1
J2
GND
GND
J1
C1
Vcc_AMP1/
AMP2
C2
RF_IN
RF_OUT
J3-20
J3-1
J3-2
J3-3
J3-4
J3-5
J3-6
J3-7
J3-8
J3-9
J2
U1
J1
C1
C2
J2
GND
GND
GND
GND
FB2
FB1
J1
J2
GND
RF
Input
Vcc_AMP3
0
0
GND
GND
RF
Output
FB1
0
C4
FB2
0
C4
10 uF
Notes:
1. See Evaluation Board PCB Information section for material and stack-up.
2. All Components are of 0603 size unless stated otherwise.
3. See Serial Control Interface section for SPI Timing Diagram.
4. 0 Ω jumpers may be replaced with copper traces in the target application layout.
5. Different ground pins are used for SPI (digital) and analog supply voltages.
6. The primary RF microstrip characteristic line impedance is 50 Ω.
7. The single power supply is used to provide supply voltage to AMP1, AMP2 and AMP3.
Bill of Material −TQM879008-PCB
Reference Des.
U1
C8
C4
C1, C2, FB1, FB2
Value
0.1 uF
10 uF
0Ω
Description
0.6 – 1.0 GHz ¼ W DVGA
Cap, Chip, 0603, 16V, X7R, 10%
Cap, Chip, 0603, 6.3V, X5R, 20%
Res, Chip, 0603, 1/16W, 5%
Manufacturer Part Number
Qorvo
various
various
various
TQM879008
Typical Performance − TQM879008-PCB
Test conditions unless otherwise noted: V
CC
=+5 V, Temp=25°C, 50 Ω system, Maximum Gain State
Parameter
Frequency
Gain
Input Return Loss
Output Return Loss
Output P1dB
Output IP3
(Pout=+11 dBm/tone, ∆f =1 MHz)
WCDMA channel power at 50dBc ACLR
1.5
41.7
14.6
6.2
+26.3
+43.7
17.6
1.9
41.8
13.2
9.2
+26.7
+40.3
17.8
Typical Value
2.1
41.7
11
11.7
+27.8
+40.4
18.9
2.3
41.5
12
13
+27.8
+43.5
18.8
2.5
41.1
16
14
+27.3
+48.5
18.5
2.7
41
20
12
+27.0
+45.0
18
Units
GHz
dB
dB
dB
dBm
dBm
dBm
Datasheet, January 02, 2018 | Subject to change without notice
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TQM879008
®
1.4-2.7 GHz 1/2 W Digital Variable Gain Amplifier
Typical Performance Plots − TQM879008-PCB
Test conditions unless otherwise specified:
V
CC
=+5 V, Temp= +25°C, 50Ω system
50
40
Gain vs. Freq. over Attenuation States
Temp.=+25°C
50
Gain vs. Frequency
Maximum Gain State
+85°C
+25°C
−40°C
46
Gain (dB)
0 dB
4 dB
0.5 dB
8 dB
1 dB
16 dB
2 dB
31.5 dB
Gain (dB)
30
20
10
0
1.4
1.6
42
38
34
30
1.8
2.0
2.2
2.4
2.6
2.8
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
Frequency (GHz)
Frequency (GHz)
0
-5
S11 vs. Freq. over Attenuation States
0 dB
0.5 dB
1 dB
2 dB
4 dB
8 dB
16 dB
31.5 dB
Temp.=+25°C
0
Input Return Loss vs. Frequency
Maximum Gain State
-5
+85°C
+25°C
−40°C
-10
|S11| (dB)
|S11| (dB)
-10
-15
-20
-25
-15
-20
-30
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
-25
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
Frequency (GHz)
Frequency (GHz)
0
S22 vs. Freq. over Attenuation States
Temp.=+25°C
0 dB
0.5 dB
1 dB
2 dB
4 dB
8 dB
16 dB
31.5 dB
0
Output Return Loss vs. Frequency
Maximum Gain State
-3
-3
|S22| (dB)
-6
|S22| (dB)
-6
+85°C
+25°C
-9
-9
−40°C
-12
-12
-15
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
-15
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
Frequency (GHz)
Frequency (GHz)
Datasheet, January 02, 2018 | Subject to change without notice
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TQM879008
®
1.4-2.7 GHz 1/2 W Digital Variable Gain Amplifier
Typical Performance Plots − TQM879008-PCB
Test conditions unless otherwise specified:
V
CC
=+5 V, Temp= +25°C, 50Ω system
55
OIP3 vs. Temperature
1 MHz Tone Spacing
Pout/Tone = 11dBm
29
P1dB vs. Temperature
Max gain state
50
+85
°
C
+25
°
C
−40
°
C
28
P1dB (dBm)
OIP3 (dBm)
27
26
25
45
40
Max gain state
+85
°
C
+25
°
C
−40
°
C
35
24
2.3
2.4
2.5
2.6
2.7
2.3
2.4
2.5
2.6
2.7
Frequency (GHz)
Frequency (GHz)
55
OIP3 vs. Frequency
1 MHz Tone Spacing
Pout/Tone = 11dBm
Max gain state
29
P1dB vs. Frequency
Max gain state
50
28
P1dB (dBm)
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
OIP3 (dBm)
27
45
26
40
25
35
24
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
Frequency (GHz)
Frequency (GHz)
-45
ACLR vs. Output Power vs. Frequency
WCDMA 3GPP TM 1+64 DPCH
5MHz offset, PAR = 10.2dB @ 0.01% probability
3.84MHz Bandwidth
6
+25
°
C
Noise Figure vs. Frequency
Max gain state
5
-50
ACLR (dBc)
4
-55
NF (dB)
1500MHz
1900MHz
3
2
-60
Max gain state
2100MHz
2300MHz
2600MHz
1
0
-65
15
16
17
18
19
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
Pout (dBm)
Frequency (GHz)
Datasheet, January 02, 2018 | Subject to change without notice
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