NEC's NPN SILICON RF
TWIN TRANSISTOR
UPA862TD
FEATURES
OUTLINE DIMENSIONS (Units in mm)
•
•
LOW VOLTAGE, LOW CURRENT OPERATION
SMALL PACKAGE OUTLINE:
1.2 mm x 0.8 mm
Package Outline TD
(TOP VIEW)
1.0±0.05
+0.07
-0.05
0.8
•
•
LOW HEIGHT PROFILE:
(Top View)
Q1
Just 0.50 mm high
C1
E1
C2
B1
E2
B2
1
2
3
6
5
4
TWO DIFFERENT DIE TYPES:
Q1 - Ideal buffer amplifier transistor
Q2 - Ideal oscillator transistor
•
IDEAL FOR 1-2 GHz OSCILLATORS
Q2
DESCRIPTION
PIN CONNECTIONS
1. Collector (Q1)
2. Emitter (Q1)
3. Collector (Q2)
4. Base (Q2)
NEC's UPA862TD contains one NE851 and one NE685 NPN
high frequency silicon bipolar chip. The NE851 is an excellent
oscillator chip, featuring low 1/f noise and high immunity to
pushing effects. The NE685 is an excellent buffer transistor,
featuring low noise and high gain. NEC's new ultra small TD
package is ideal for all portable wireless applications where
reducingboardspaceisaprimeconsideration. Eachtransistor
chip is independently mounted and easily configured for oscil-
lator/buffer amplifier and other applications.
5. Emitter (Q2)
6. Base (Q1)
ELECTRICAL CHARACTERISTICS (TA = 25°C)
PART NUMBER
PACKAGE OUTLINE
UPA862TD
TD
SYMBOLS
PARAMETERS AND CONDITIONS
UNITS
nA
MIN
TYP
MAX
ICBO
IEBO
hFE
Collector Cutoff Current at VCB = 5 V, IE = 0
100
100
150
Emitter Cutoff Current at VEB = 1 V, IC = 0
nA
DC Current Gain1 at VCE = 3 V, IC = 10 mA
75
10
110
12
fT
Gain Bandwidth at VCE = 3 V, IC = 10 mA, f = 2 GHz
Feedback Capacitance2 at VCB = 3 V, IE = 0, f = 1 MHz
Insertion Power Gain at VCE = 3 V, IC =10 mA, f = 2 GHz
Noise Figure at VCE = 3 V, IC = 3 mA, f = 2 GHz
GHz
pF
Cre
0.4
8.5
1.5
0.7
2.5
|S21E|2
dB
7
NF
dB
ICBO
IEBO
hFE
Collector Cutoff Current at VCB = 10 V, IE = 0
Emitter Cutoff Current at VEB = 1 V, IC = 0
nA
nA
600
600
145
DC Current Gain1 at VCE = 3 V, IC = 7 mA
100
5.0
120
6.5
0.6
4.0
5.5
fT
Gain Bandwidth at VCE = 1 V, IC = 15 mA, f = 2 GHz
Feedback Capacitance2 at VCB = 3 V, IE = 0, f = 1 MHz
Insertion Power Gain at VCE = 1 V, IC =5 mA, f = 2 GHz
GHz
pF
Cre
0.8
2.5
|S21E|2
dB
3.0
4.5
|S21|S21E|2E|2 Insertion Power GainIat VCE = 1 V, IC =15 mA, f = 2 GHz
dB
NF Noise Figure at VCE = 1 V, IC = 10 mA, f = 2 GHz
dB
1.9
Notes: 1. Pulsed measurement, pulse width ≤ 350 µs, duty cycle ≤ 2 %.
2. Collector to base capacitance when measured with capacitance meter (automatic balanced bridge method), with emitter connected to
guard pin of capacitances meter.
California Eastern Laboratories