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0.8 – 6 GHz 3 V Downconverter Technical Data
IAM-91563
Features
• +0 dBm Input IP3 at 1.9 GHz • Single +3V Supply • 8.5 dB SSB Noise Figure at 1.9 GHz • 9.0 dB Conversion Gain at 1.9 GHz • Ultra-miniature Package
Surface Mount Package SOT-363 (SC-70)
Description
Hewlett-Packard’s IAM-91563 is an economical 3V GaAs MMIC mixer used for frequency down-conversion. RF frequency coverage is from 0.8 to 6 GHz and IF coverage is from 50 to 700 MHz. Packaged in the SOT-363 package, this 4.0␣ sq. mm. package requires half the board space of a SOT-143 and only 15% the board space of an SO-8 package. At 1.9 GHz, the IAM-91563 provides 9 dB of conversion gain, thus eliminating an RF or IF gain stage normally needed with a lossy mixer. LO drive power is nominally only -5 dBm, eliminating an LO buffer amplifier. The 8.5 dB noise figure is low enough to allow the system to use a low cost LNA. The -6 dBm Input IP3 provides adequate system linearity for most commercial applications, but is adjustable to 0 dBm. The circuit uses GaAs PHEMT technology with proven reliability, and uniformity. The MMIC consists of a cascode FET structure that provides unbalanced gm modulation type mixing. An onchip LO buffer amp drives the mixer while bias circuitry allows a single +3V supply (through a choked IF port). The LO port is internally matched to 50 Ω. The RF and IF ports are high impedance and require external matching networks. 5965-9973E
Applications
• Downconverter for PCS, PHS, ISM, WLL, and other Wireless Applications
Pin Connections and Package Marking
LO 1 6 IF and Vd
91
GND 2 RF 3
5 GND 4 SOURCE BYPASS
Note: 1. Package marking provides orientation and identification.
Simplified Schematic
IF and Vd 6 LO 1 SOURCE BYPASS RF 3 GROUND 2, 5 4
7-135
IAM-91563 Absolute Maximum Ratings
Symbol Vd VRF, VLO Pin Tch TSTG Parameter Device Voltage, RF output to ground RF voltage or LO voltage to ground CW RF Input Power Channel Temperature Storage Temperature Absolute Units Maximum[1] V V dBm °C °C 6.0 +0.5, -1.0 +13 150 -65 to 150 Thermal Resistance[2]: θch-c = 310°C/W
Notes: 1. Permanent damage may occur if any of these limits are exceeded. 2. TC = 25°C (TC is defined to be the temperature at the package pins where contact is made to the circuit board).
IAM-91563 Electrical Specifications, TC = 25°C, Vd = 3 V
Symbol
G test NFtest Id NF
Parameters and Test Conditions
Gain in test circuit[1] Noise Figure in test Device Current Noise Figure (RF & IF with external matching, IF=250 MHz, LO power=-5 dBm) f = 0.9 GHz f = 1.9 GHz f = 2.4 GHz f = 4.0 GHz f = 6.0 GHz f = 0.9 GHz f = 1.9 GHz f = 2.4 GHz f = 4.0 GHz f = 6.0 GHz f = 0.9 GHz f = 1.9 GHz f = 2.4 GHz f = 4.0 GHz f = 6.0 GHz circuit[1] RF=1890 GHz, IF=250 MHz RF=1890 GHz, IF=250 MHz
Units Min. Typ. Max. Std Dev[2]
dB dB mA dB 6.0 4.0 9.0 8.5 9.0 7.0 8.5 11.0 16.5 18.0 11.0 9.0 7.7 4.6 1.7 -6.7 -8.0 -8.7 -15.0 -17.8 -1.7 -9.4 -3.7 -6.0 0 18 2 4 11.0 12.0 0.5
Gc
Conversion gain (RF and IF with external matching, IF=250 MHz, LO power=-5 dBm)
dB
1.5
P1 dB
Output power @ 1 dB compression (RF and IF with external matching, IF=250 MHz, LO power =-5 dBm)
dBm
1.3
RL RF RL LO RL IF IP3 IP3
RF port return loss LO port return loss IF port return loss Input Third Order Intercept Point Id = 9.0 mA, LO power = -5 dBm Input Third Order Intercept Point Id = 15 mA, LO power = -2 dBm
f = 0.5 - 6.0 GHz f = 0.5 - 6.0 GHz f = 50 - 700 MHz RF = 1.9 GHz, IF = 250 MHz RF = 1.9 GHz, IF = 250 MHz RF = 1.9 GHz
dB dB dB dBm dBm dB dB dB
0.2 0.3 0.2 1.3 1.1
ISOLL-R LO-RF Isolation ISOLR-I RF-IF Isolation (No Match) ISOLL-I LO-IF Isolation (No Match)
Notes: 1. Guaranteed specifications are 100% tested in the circuit in Figure 18 in the Applications Information section. 2. Standard deviation number is based on measurement of at least 500 parts from three non-consecutive wafer lots during the initial characterization of this product, and is intended to be used as an estimate for distribution of the typical specification.
7-136
IAM-91563 Typical Performance, TC = 25°C, Vd = 3.0 V, RF=1890 MHz, LO = -5 dBm, IF = 250 MHz,
unless otherwise stated.
7-137
IAM-91563 Typical Performance, TC = 25°C, Vd = 3.0 V, RF=1890 MHz, LO = -5 dBm, IF = 250 MHz,
unless otherwise stated.
12 12 12
SSB NOISE FIGURE (dB)
CONVERSION GAIN (dB)
8
8
CONVERSION GAIN (dB)
10
10
10
8
6
4
TA = +85°C TA = +25°C TA = -40°C
6
4
TA = 3.3V TA = 3.0V TA = 2.7V
6
4
TA = +85°C TA = +25°C TA = -40°C
2 0 100 200 300 400 500 600 700 IF FREQUENCY (MHz)
2 0 100 200 300 400 500 600 700 IF FREQUENCY (MHz)
2 0
100
200 300 400
500 600 700
IF FREQUENCY (MHz)
Figure 10. SSB Noise Figure vs. Frequency and Temperature.
Figure 11. Conversion Gain vs. Frequency and Supply Voltage.
Figure 12. Conversion Gain vs. Frequency and Temperature.
14
P1 dB and INPUT IP3 (dBm)
0
ISOLATION (dB, No Match)
0 -2 -4 -6 -8 -10 -12 -14 -16 -18 LO-RF RF-IF LO-IF
NF
CONVERSION GAIN and NOISE FIGURE (dB)
12
-2.