SILICON MMIC
L BAND DOWNCONVERTER
UPC2721GR
UPC2722GR
FEATURES
INTERNAL BLOCK DIAGRAM
• WIDE BAND OPERATION UP TO 2.5 GHz
• INTERNAL BALANCED AMPLIFIER FOR VCO
• SINGLE ENDED PUSH-PULL IF AMPLIFIER
OSC base
(bypass)
RFIN1
1
2
3
8
• 5 V SINGLE SUPPLY VOLTAGE:
ICC = 30 to 35 mA
OSC
• LOW CURRENT DISSIPATION
OSC base
(feedback)
RFIN2
(bypass)
7
6
• TAPE AND REEL PACKAGING OPTION AVAILABLE
OSC
BUFFER
DESCRIPTION
OSC collector
(coupling)
GND
The UPC2721 and UPC2722 are L-Band frequency convert-
ers manufactured using the NESAT III MMIC process. These
productsconsistofadoublebalancedmixer, localoscillator, IF
preamplifier, and constant voltage generator. These devices
are designed for low cost cellular radios, GPS receivers, PCS,
and UHF TV tuner applications.
IF
AMP
VCC
4
IFOUT
5
REG.
MIX
The UPC2721 output amplifier is a single-end push-pull ampli-
fier designed for operation into a 50 Ω load. The UPC2722
output amplifier is the collector of one side of a balanced
amplifier pair and operates best into a high impedance load.
The absence of capacitive coupling in the UPC2722 permits
better performance at IF frequencies below 25 MHz.
NEC's stringent quality assurance and test procedures ensure
the highest reliability and performance.
ELECTRICAL CHARACTERISTICS (TA = 25°C, VCC = 5 V, PLO = -10 dBm)
PART NUMBER
UPC2721GR
G08
UPC2722GR
G08
PACKAGE OUTLINE
SYMBOLS
PARAMETERS AND CONDITIONS
Circuit Current
UNITS
mA
MIN
TYP
MAX
MIN
TYP
MAX
ICC
fRF
fIF
29
0.9
50
18
38
45.5
2.0
19
0.9
DC
15
28
37
2.0
600
21
RF Frequency Range
IF Frequency Range
GHz
MHz
600
24
CG
Conversion Gain2
dB
dB
dB
21
22
19.5
18
19
17
fRF = 900 to 2000MHz,
fIF = 50 to 400 MHz
fIF = 400 to 400 MHz
PSAT
NF
Saturated Output Power2
dBm
dBm
2
7
7
2
6
6
fRF = 800 to 2000 MHz, fIF = 400 MHz
Noise Figure fRF = 900 MHz, fIF = 400 MHz,
fRF = 2.0 GHz, fIF = 400 MHz
SSB Third Order Intercept Point,
f1 = 900 MHz, f2 = 938 MHz
f1 = 2.0 GHz, f2 = 2.038 GHz
dB
dB
9
11
13
15
9
11
13
15
IP3
dBm
dBm
+10
+8.5
+9
+8
Notes:
1. Mounted on a 50 x 50 x 1.6 mm thick glass epoxy board with double sided copper.
2. Minimum and maximum specifications for CG and PSAT are measured at fRF = 900 MHz and 2.0 GHz and at fIF = 402.8 MHz.
California Eastern Laboratories