1
MGA-785T6
Low Noise Amplifier with Bypass Switch
Data Sheet
Description/Applications
The MGA-785T6 is an easy–to–use GaAs MMIC Low Noise
Amplifier (LNA) that offer excellent linearity and low noise
figure for application from 0.1 to 1.5 GHz. The device is
housed in Ultra Thin Small Leadless Package (UTSLP) with
0.4mm package thickness.
The MGA-785T6 features a typical noise figure of 1.5 dB
and 15.7 dB associated gain from single stage, feedback
FET amplifier. The output is internally matched to 50Ω.
The input is optimally internally matched for lowest noise
figure into 50Ω. The input may be additionally externally
matched for low VSWR through the addition of a single
series inductor. When set into the bypass mode, both
input and output are internally matched to 50 Ω.
The MGA-785T6 offers an integrated solution of LNA with
adjustable IIP3. The IIP3 can be fixed to a desired current
level for the receivers linearity requirements. The LNA has
a bypass switch function, which sets the current to zero
and provides low insertion loss. The bypass mode also
boosts dynamic range when high level signal is being
received.
Package Marking & Orientation
Features
x Operating Freq = 0.1 ~1.5 GHz
x Bypass Switch on Chip
x Adjustable Input IP3
x Miniature Surface Mount 2.0x1.3x0.4 mm
3
6-lead UTSLP
Specifications at 600 MHz; 3V 10 mA (Typ.)
x 1.5 dB Noise Figure
x 15.7 dB Gain
x Bypass Switch on chip
Loss = -2.6 dB
IIP3 = + 29.5 dBm
Applications
LNA for DVB-T, DVB-H, T-DMB, ISDB-T, DAB and MediaFLO
78YM
78 = Device Code
Y = Year of manufacture
M = Month of manufacture
Top View
Bottom View
Pin 2 : RF_IN
and Vref
Pin 3 : NC
Pin 4 : NC
Pin 5 : RF_Out
and Vd
Pin 6 : NC
78YM
Pin 1 : NC
2
Table 1. Absolute Maximum Rating
[1]
Symbol Parameter Units
Absolute
Max.
Max.
Recommended
Vd Device Voltage V 5.5 4.2
Vref Max Input to Ground DC Voltage V +0.3
-5.5
+0.1
-4.2
Ids Drain Current mA 70 60
P
d
Power Dissipation mW 300 250
P
in,max
CW RF Input Power dBm +20 +13
T
j
Junction Temperature °C 170 150
T
STG
Storage Temperature °C -65 to +150 -40 to +85
Thermal Resistance
[2]
: Tjc = 82 °C / W
Notes:
1. Operation of this device in excess of any of these limits may cause permanent damage.
2. Thermal Resistance is measured from junction to board using IR method.
Table 2. Electrical Specifications
T
A
= 25 °C , Freq = 0.6 GHz, Vd = 3V (unless otherwise specified)
Symbol Parameter and Test Condition Units Min. Typ Max.
Vref
[1,2]
Input to Ground DC Voltage Vd = 3V Id = 10 mA V -0.80 -0.61 -0.42
NF
[1,2]
Noise Figure in test circuit Vd = 3V Id = 10 mA dB - 1.50 1.90
Gain
[1,2]
Associated Gain in test circuit Vd = 3V Id = 10 mA dB 14.00 15.40 17.00
IIP3
[1,2,3]
Input 3rd Order Intercept in test
circuit
Vd = 3V Id = 10 mA dBm -0.50 1.10 -
P1dB
[1,2]
Output Power at 1 dB Gain
Compression in test circuit
Vd = 3V Id = 10 mA dBm - 3.20 -
Ig (Bypass)
[1,2]
Gate Leakage Current
(Bypass mode)
Vd = 0,
Vref = -3V
Id = 0 mA uA - 1.70 -
IIP3 (Bypass)
[1,2,4]
Input 3rd Order Intercept in test
circuit (bypass mode)
Vd = 0,
Vref = -3V
Id = 0 mA dBm 26.50 29.50 -
IL (Bypass)
[1,2]
Insertion Loss in test circuit
(bypass mode)
Vd = 0,
Vref = -3V
Id = 0 mA dB -4.00 -2.60 -
Notes:
1. Circuit losses have been de-embedded from actual measurement.
2. Measurement in table 2 uses the test board and circuit schematic shows in figure 1a. Data based on 500 part sample size from two wafer lots
during initial characterization of this product.
3. 0.6 GHz IIP3 Test Condition : F1 = 0.6 GHz, F2 = 0.605 GHz, Pin = -25 dBm
4. 0.6 GHz IIP3 (Bypass) Test Condition : F1 = 0.6 GHz, F2 = 0.605 GHz, Pin = -15 dBm
3
Circuit Symbol Size Description
C1 0402 5.6 pF
C2, C5 0402 120 pF
C3, C6 0402 0.1 uF
C4 0402 8.2 pF
R1 0402 51 ohm
L1 0402 47 nH
L2 0402 15 nH
L3 0402 27 nH
Figure 1a. MGA-785T6 Production Test Circuit. Circuit losses have been de-embedded from actual measurements.
Figure 1b. A diagram showing the connection to the DUT during an S-parameter and Noise parameter measurement using an Automated Tuner System
C3
0.1 uF
L2
15 nH
L1
47 nH
R1
51 Ohm
C2
120 pF
C1
5.6pF
RF in
C6
0.1 uF
C5
120 pF
L3
27 nH
C4
8.2 pF
RF out
Vd
Vref
52
MGA-785T6
Bias Tee Bias Tee
ICM Fixture
52
RF output
MGA -785T6
Vd
RF input
Vref

MGA-785T6-TR2G

Mfr. #:
Manufacturer:
Broadcom / Avago
Description:
IC AMP DMB 100MHZ-1.5GHZ 6UTSLP
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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