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1 GHz Low Noise Silicon MMIC Amplifier Technical Data
INA-50311
Features
* Internally Biased, Single 5 V Supply (17 mA) * 19 dB Gain * 3.6 dB NF * Unconditionally Stable
SOT-143 Surface Mount Package
Description
Hewlett-Packard's INA-50311 is a Silicon monolithic amplifier that offers excellent gain and noise figure for applications to 1.0 GHz. Packaged in a miniature SOT-143 package, it requires very little board space. The INA-50311 uses a topology which is internally biased, eliminating the need for external components and providing decreased sensitivity to ground inductance. The INA-50311 is fabricated using HP's 30 GHz fMAX ISOSATTM Silicon bipolar process which uses nitride self-alignment submicrometer lithography, trench isolation, ion implantation, gold metallization, and polyimide intermetal dielectric and scratch protection to achieve superior performance, uniformity, and reliability.
Applications
* Amplifier for Cellular, Cordless, Special Mobile Radio, PCS, ISM, Wireless LAN, and TV Tuner Applications
Pin Connections and Package Marking
INPUT GND
N50
VCC RF OUTPUT
VCC
OUTPUT
Equivalent Circuit (Simplified)
RF INPUT
GROUND
5963-6680E
6-146
Absolute Maximum Ratings
Symbol VCC Pin Tj TSTG Parameter Device Voltage, to ground CW RF Input Power Junction Temperature Storage Temperature Units V dBm C C Absolute Maximum[1] 12 +13 150 -65 to 150 Thermal Resistance[2]: jc = 550C/W
Notes: 1. Operation of this device above any one of these limits may cause permanent damage. 2. TC = 25C (TC is defined to be the temperature at the package pins where contact is made to the circuit board).
INA-50311 Electrical Specifications[3], TC = 25C, ZO = 50 , VCC = 5 V
Symbol Gp NF P1dB IP3 VSWR Icc d Parameters and Test Conditions Power Gain (|S21|2) Noise Figure Output Power at 1 dB Gain Compression Third Order Intercept Point Input VSWR Output VSWR Device Current Group Delay f = 900 MHz f = 900 MHz f = 900 MHz f = 900 MHz f = 900 MHz f = 900 MHz f = 900 MHz mA ps Units dB dB dBm dBm Min. 16.5 Typ. 19 3.6 0 +10 1.5 1.2 17 320 22 Max.
INA-50311 Typical Scattering Parameters[3], TC = 25C, ZO = 50 , VCC = 5 V
Freq. GHz 0.05 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.20 1.40 1.60 1.80 2.00 2.20 2.40 2.50 Mag 0.12 0.12 0.12 0.14 0.15 0.16 0.17 0.18 0.19 0.19 0.20 0.21 0.21 0.21 0.22 0.22 0.21 0.20 0.20 S11 Ang -2 -5 -10 -16 -25 -32 -45 -57 -71 -84 -98 -122 -143 -162 -177 170 158 149 146 dB 22.2 22.2 22.1 22.1 21.9 21.7 21.3 20.9 20.3 19.6 18.9 17.2 15.5 13.8 12.2 10.7 9.3 8.1 7.5 S21 Mag 12.82 12.81 12.80 12.68 12.45 12.12 11.65 11.04 10.35 9.57 8.78 7.28 5.97 4.92 4.08 3.43 2.92 2.53 2.37 Ang -6 -12 -24 -36 -49 -61 -74 -87 -99 -111 -122 -143 -161 -176 169 157 145 134 129 dB -31.9 -31.7 -31.4 -31.1 -30.6 -30.0 -29.3 -28.5 -27.7 -26.9 -26.0 -24.3 -22.8 -21.5 -20.4 -19.5 18.5 -17.9 -17.7 S12 Mag 0.025 0.026 0.027 0.028 0.030 0.032 0.034 0.038 0.041 0.045 0.050 0.061 0.072 0.084 0.095 0.106 0.119 0.127 0.131 S22 Ang 5 9 16 23 30 36 42 47 51 54 56 59 60 60 58 55 54 50 49 Mag 0.08 0.07 0.07 0.08 0.09 0.09 0.10 0.11 0.11 0.11 0.11 0.11 0.11 0.10 0.10 0.10 0.10 0.11 0.12 Ang -11 -24 -44 -62 -78 -94 -107 -120 -131 -141 -149 -163 -172 -179 175 172 166 163 160 K Factor 1.68 1.63 1.59 1.55 1.48 1.44 1.42 1.36 1.35 1.34 1.32 1.31 1.33 1.37 1.42 1.49 1.55 1.65 1.69
Note: 3. Reference plane per Figure 9 in Applications Information section.
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INA-50311 Typical Performance, TC = 25C, ZO = 50 , VCC = 5 V
25
5
6 4 2 0 -2 -4 -6 0.1 4.5 V 5.5 V 5.0 V
20
NOISE FIGURE (dB)
4
GAIN (dB)
15
5.5 V 5.0 V 4.5 V
3
10
2 5.5 V 5.0 V 4.5 V
5
1
0 0.1
0.3
0.5
0.7
0.9
1.1
1.3
1.5
0 0.1
0.3
0.5
0.7
0.9
1.1
1.3
1.5
P 1 dB (dBm)
0.3
0.5
0.7
0.9
1.1
1.3
1.5
FREQUENCY (GHz)
FREQUENCY (GHz)
FREQUENCY (GHz)
Figure 1. Power Gain vs. Frequency and Voltage.
Figure 2. Noise Figure vs. Frequency and Voltage.
Figure 3. Output Power for 1 dB Gain Compression vs. Frequency and Voltage.
3 2
25
5
+85 +25
20
NOISE FIGURE (dB)
4
-40
P 1 dB (dBm)
GAIN (dB)
15
-40 +25 +85
1 0 -1 -2 -3 0.1 +85 +25 -40 0.3 0.5 0.7 0.9 1.1 1.3 1.5
3
10
2
5
1
0 0.1
0.3
0.5
0.7
0.9
1.1
1.3
1.5
0 0.1
0.3
0.5
0.7
0.9
1.1
1.3
1.5
FREQUENCY (GHz)
FREQUENCY (GHz)
FREQUENCY (GHz)
Figure 4. Gain vs. Frequency and Temperature.
Figure 5. Noise Figure vs. Frequency and Temperature.
Figure 6. Output Power for 1 dB Gain Compression vs. Frequency and Temperature.
3.0
40 +85 +25 -40
2.5
VSWR (N:1)
ICC (mA)
30
2.0
20
1.5
OUTPUT INPUT
10
1.0 0.1
0.3
0.5
0.7
0.9
1.1
1.3
1.5
0
0
1
2
3
4
5
6
7
FREQUENCY (GHz)
VCC (V)
Figure 7. Input and Output VSWR vs. Frequency.
Figure 8. Supply Current vs. Voltage and Temperature.
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INA-50311 Applications Information
Introduction INA-50311 is a silicon RF integrated circuit amplifier with a 50 input and output. The INA-50311 uses resistive feedback to provide flat gain for low noise or multi-purpose gain block applications up to 1000 MHz. Phase Reference Planes The positions of the reference planes used to measure S-Parameters are shown in Figure 9. As seen in the illustration, the reference planes are located at the point where the package leads contact the test circuit. Biasing The INA-50311 is a voltage biased device and operates from a single +5 volt power supply with a current drain of only 17 mA. All bias circuitry is fully integrated into the IC eliminating the need for external DC components. The supply voltage for the INA-50311 is fed in through a separate VCC pin of the device and does not require RF isolation from the input or output signal connections.
Operating Details The INA-50311 is very easy to use. The basic application of the INA-50311 is shown in Figure 10. DC blocking capacitors are placed in series with the RF Input and RF Output to isolate adjacent circuits from the internal bias voltages that are present at these terminals. The values of the blocking capacitors are determined by the lowest operating frequency. The values for the blocking capacitors are chosen such that their reactances are small relative to 50 . As an example, use of the INA-50311 for an application covering the 902 to 928 MHz band would require blocking capacitors of at least 70 p F. The VCC connection to the amplifier must be RF bypassed by placing a capacitor to ground directly at the bias pin of the package. Like the DC blocking capacitors, the value of the VCC bypass capacitor is determined by the lowest operating frequency for the amplifier. This value may typically be the same as that of the DC blocking capacitors. If long bias lines are used to connect the amplifier to the VCC
Cblock RF OUTPUT
supply, additional bypass capacitors may be needed to prevent resonances that would otherwise result in undesirable gain responses. A well-bypassed VCC line is also desirable to prevent possible oscillations that may occur due to feedback through the bias line from other stages in a cascade. Adequate grounding is needed to obtain maximum performance. The ground pin of the INA-50311 should be connected directly to RF ground by using plated through holes (vias) near the package terminals. FR-4 or G-10 PCB material is a good choice for most low cost wireless applications. Typical board thickness is 0.025 or 0.031 inches. The width of 50 microstriplines in these PCB thicknesses is also convenient for mounting chip components such as the series DC blocking capacitors. Circuit Example The amplifier example in Figure 11 shows a typical implementation of the INA-50311. The input and output connections are through 50 microstriplines with DC blocking capacitors. The VCC supply connection is RF bypassed very close to the lead of the RFIC. Provision is also made for an additional bypass capacitor on the VCC line near the edge of the PCB.
REFERENCE PLANES
TEST CIRCUIT
Cbypass
Figure 9. Reference Planes.
RF INPUT
Cblock Cbypass VCC
Figure 10. Basic Amplifier Application.
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Figure 11. Application Example.
INA-50311 Part Number Ordering Information
Part Number INA-50311-TR1 INA-50311-BLK Devices per Container 3,000 100 Container 7" reel Antistatic bag
Package Dimensions
0.92 (0.036) 0.78 (0.031) PACKAGE MARKING CODE XXX
1.40 (0.055) 1.20 (0.047)
2.65 (0.104) 2.10 (0.083)
0.60 (0.024) 0.45 (0.018) 2.04 (0.080) 1.78 (0.070) TOP VIEW 3.06 (0.120) 2.80 (0.110)
0.54 (0.021) 0.37 (0.015)
1.02 (0.041) 0.85 (0.033)
0.15 (0.006) 0.09 (0.003)
0.10 (0.004) 0.013 (0.0005) SIDE VIEW
0.69 (0.027) 0.45 (0.018) END VIEW
DIMENSIONS ARE IN MILLIMETERS (INCHES)
6-150

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