UPC2781GR Datasheet, PDF (1/5 Pages) NEC – SI MMIC IQ DEMODULATOR

SI MMIC IQ DEMODULATOR ^UPC2781GR
FEATURES
• RF BANDWIDTH:
440 - 520 MHz
• IF BANDWIDTH:
0.3 - 20 MHz
• ON CHIP 90˚ PHASE SHIFTER
• IQ PHASE AND AMPLITUDE BALANCE
Amplitude Balance: ± 0.5 dB
Phase Balance: ± 2.0 degree
• LOW IM3 DISTORTION:
35 dBc Typical
• SMALL 20 PIN SSOP PACKAGE
• TAPE AND REEL PACKAGE AVAILABLE
DESCRIPTION
The UPC2781GR is a Silicon MMIC IQ demodulator manu-
factured with the NESAT III™ silicon bipolar process. The IC
consists of an AGC amplifier, double balanced mixers, oscil-
lator, 90˚ phase shifter, and I&Q output buffer amps. The
device was specifically designed for DBS receivers and other
digital communication systems.
INTERNAL BLOCK DIAGRAM
GND(IQ) 1
VCC(IF-I) 2
VAGC 3
GND(RF) 4
RF IN 5
RF IN 6
GND(IQ) ₇
VCC(RF) 8
AGC
AMP.
VCC(IF-Q) 9
VCC(PS) 10
90 deg
phase
shifter
20 I OUT
19 I OUT
18 OSC OUT
17 OSC-B2
16 OSC-C1
15 OSC-C2
14 _OSC-B1
13 GND(PS)
12 Q OUT
11 Q OUT
NEC's stringent quality assurance and test procedures en-
sure the highest reliability and performance.
ELECTRICAL CHARACTERISTICS (TA = 25°C, VCC = 5 V, ZL = 1k Ω)
SYMBOLS
ICC
fRF
fIF
PART NUMBER
PACKAGE OUTLINE
PARAMETERS AND CONDITIONS
Supply Current (no input signal)
RF Input Bandwidth (fIF = 10 MHz, fRF > fLO, IQ Phase Balance < ± 1.5˚)
IF Output Bandwidth
(fRF = 480 MHz, PLO = -10 dBm, fRF > fLO, VAGC = 0 V)
UNITS
mA
MHz
MHz
UPC2781GR
S20 (SSOP 20)
MIN
TYP
MAX
52
70
88
440
480
520
0.3
20
CG
Conversion Gain (fRF = 480 MHZ, fIF = 10 MHZ, VAGC = 0 V)
dB
50
NF
Noise Figure (fRF = 480 MHZ, fIF = 10 MHZ, PLO = -10 dBm, VAGC = 0 V)
dB
18
IM3
3rd Order Intermodulation Distortion
(fRF1 = 480 MHz, fRF2 = 481 MHz, fLO = 470 MHz, PLO = -10 dBm)
dBc
35
∆Φ
IQ Phase Balance
deg
-2
+2
(fRF = 480 MHZ, fIF = 10 MHZ, PRF = -30 dBm, PLO = -10 dBm)
∆G
IQ Amplitude Balance
dB
-0.5
(fRF = 480 MHz, fIF = 10 MHZ, PRF = -30 dBm, PLO = -10 dBm, VAGC = 0 V)
+0.5
GAGC
AGC Control Range
dB
15
20
(fRF = 480MHZ, PRF = -30dBm, fIF = 10MHZ, PLO = -10dBm, 0 ≤ VAGC ≤ 5 V)
LO-RF LO to RF Isolation
dB
30
(fLO = 470 MHZ, PLO = -10 dBm, PRF = -30 dBm, VAGC = 0 V)
LO-IF
LO to IF Isolation
dB
20
(fLO = 470 MHZ, PLO = -10 dBm, PRF = -30 dBm, VAGC = 0 V)
PO (SAT) Maximum Output Power (fRF = 480 MHz, fIF = 10 MHZ, PRF = -10 dBm)
dBm
0
VO
Output Voltage (fRF = 480 MHZ, fIF = 10 MHZ, PLO = -10 dBm, ZL = 1k Ω) VP-P
1.0
California Eastern Laboratories