Datasheet STB7102TR, STB7102 Datasheet (SGS Thomson Microelectronics)

0.5/2.5 GHz UHF LO BUFFER AMPLIFIER

• OPERATING FREQ UENCY 500-250 0MH z

• LOW CURRENT CONSUMPTION

• EXCELLENT ISOLATION

• ULTRA MINIATURE SOT323-6L PACKAGE

APPLICATIONS

• BUFFER AMPLIFIER FOR 0.5/2.5 GHz

APPLICATIONS

• CDMA/PCS LO BUFFER AMPLIFIER

SOT323-6L (SC70)

ORDER CODE

STB7102TR

(Top View)

3

102

STB7102

BRANDING

102

(Bottom V ie w)

4

4

3

5

DESCRIPTION

The STB7102, designed for RF Mobile Phone
applications (0.5/2.5GHz), is an high isolation

2

1

5

6

6

Local Oscillator Buffer Amplifier. Manufactured in
the third generation of ST proprietary bipolar
process, it offers an excellent isolation and a good
linearity using only 4mA current c onsumption. The

PIN CONNECTION

Pin No. Pin Name

STB7102 is housed in an ultra miniature package
SOT323-6L surface mount package.

1 INPUT
2GND
3GND
4 OUTPUT
5GND
6VCC

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Conditions Value Unit

V
T

Supply voltage 3.3 V

cc

Storage temperature -40 to +100

stg

T

Operating ambient temperature -30 to +85

a

2

1

o

C

o

C

1/9February, 25 2002

STB7102

ELECTRICAL CHARACTERISTICS (
(T

= +25oC, Vcc = 2.7V, Zs = ZL = 50Ω, tested in circuit shown in fig.1, unless otherwise specified)

a

CELL BAND

)

Symbol Parameters Test Conditions Min Typ Max Unit

Freq. Frequency Range 990 1030 MHz

Vcc Supply Voltage 2.6 2. 7 2.8 V

Icc Current Consumption 3.3 4.3 5.3 mA

P1dB Output Power at 1dB Compression Point F = 1010 MHz -2 dBm

Gp Power Gain F = 1010 MHz 16.7 dB
NF Noise Figure F = 1010 MHz 2.7 dB

Isol. Reverse Isolation F = 1010 MHz 45 dB

RLin Input Return Loss F = 1010 MHz 30 dB

RLout Output Return Loss F = 1010 MHz 17.8 dB

Figure 1 Cel l Band Applicat io n C ir cui t Co nfi guration

C8

U1

1.5pF

L2
2n2

ULOBA

J1

RF I N

L4
5n6

C1
33pF

3
2

GND
GND
INPUT1VCC

OUT
GND

4
5
6

C5

10nF

C3

33pF

L3

10nH

L1

33nH

C2
1uF

JP1
VCC

1
2

J2

RF OUT

2/9

TYPICAL PERFORMANCE (CELL BAND)

Power Gain vs. Frequency and Voltage

STB7102

Power Gain vs. Frequency and Temperature

20
18

Vcc = 2. 8 V

16
14

Vcc = 2.7 V

Vcc = 2. 6 V

12
10

8

Power Gain (dB)

6
4
2

Ta = 25 °C

0

800 900 1000 1100 1200

Freque ncy (MHz)

Reverse Isolation vs. Frequency and Voltage

0

-10

-20

-30

Ta = 25 °C

20
18
16
14

Ta = 25 °C

Ta = -30 °C

Ta = 85 °C

12
10

8

Power Gain (dB)

6
4
2

Vcc = 2. 7 V

0

800 900 1000 1100 1200

Freque ncy (MHz)

Reverse Isolation vs. Frequency and Temperature

0

Vcc = 2.7 V

-10

-20

-30

-40

Reverse Isolation (dB)

Vcc = 2.7 V

-50

Vcc = 2.6 V

-60
800 900 1000 1100 1200

Vcc = 2.8 V

Frequency (MHz)

Input Return Loss vs. Frequency and Voltage

0

-5

-10

-15

Vcc = 2.7 V

Freque ncy (MHz)

Vcc = 2. 8 V

Vcc = 2.6 V

-20

Input Return Loss (dB)

-25

-30

-35
800 900 1000 1100 1200

Ta = 25 °C

-40

Reverse Isolation (dB)

Ta = -30 °C

-50

Ta = 85 °C

-60
800 900 1000 1100 1200

Ta = 25 °C

Freq ue ncy (MHz)

Input Return Loss vs. Frequency and Temperature

0

-5

-10

-15

-20

Input Return Loss (dB)

-25

Ta = 85 °C

-30

-35

Ta = 25 °CTa = -30 °C

800 900 1000 1100 1200

Freque ncy (MHz)

Vcc = 2.7 V

3/9

STB7102

TYPICAL PERFORMANCE (CELL BAND)

Output Return Loss vs. Frequency and Voltage

Output Return Loss vs. Frequency and Temperature

0

-5

-10

-15

Vcc = 2.8 V

Vcc = 2.7 V

Vcc = 2.6 V

-20

-25

-30

Output Return Loss (dB)

-35

-40

-45
800 900 1000 1100 1200

Freque ncy (MHz)

Noise Figure vs. Frequency

4

3.5

3

2.5

2

1.5

Noise Figure (dB)

1

0.5

0

800 900 1000 1100 1200

Freque ncy (MHz)

Ta = 25 °C

0

-5

Ta = 85 °C

Vcc = 2. 7 V

-10

-15

-20

-25

-30

Output Return Loss (dB)

Ta = 25 °C

Ta = -30 °C

-35

-40

-45
800 900 1000 1100 1200

Freque ncy (MHz)

Output Power @ 1dB compression point

P1dB

F = 1010 MHz

-13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0

Poutput (dBm)

17

16

15

Gain (dB)

14

13

12

4/9

STB7102

ELECTRICAL CHARACTERISTICS (
(T

= +25oC, Vcc = 2.7V, Zs = ZL = 50Ω, tested in circuit shown in fig.2, unless otherwise specified)

a

PCS BAND

)

Symbol Parameters Test Conditions Min Typ Max Unit

Freq. Frequency Range 2040 2135 MHz

Vcc Supply Voltage 2.6 2. 7 2.8 V

Icc Current Consumption 3.3 4.3 5.3 mA

P1dB Output Power at 1dB Compression Point F = 2085 MHz -1 dBm

Gp Power Gain F = 2085 MHz 10 dB
NF Noise Figure F = 2085 MHz 5 dB

Isol. Reverse Isolation F = 2085 MHz 41 dB

RLin Input Return Loss F = 2085 MHz 17 dB

RLout Output Return Loss F = 2085 MHz 24 dB

Figure 2 PCS Band Application Circuit Configuration

C8

U1

22pF

L2
6n8

ULOBA

J1

RF IN

C1
33pF

3

GND

2

GND
INPUT1VCC

OUT
GND

4
5
6

C5

10nF

33pF

10nH

C3

L3

JP1
VCC

1

L1

33nH

C2

1uF

2

J2

RF OUT

5/9

STB7102

TYPICAL PERFORMANCE (PCS BAND)

Power Gain vs. Frequency and Voltage

Power Gain vs. Frequency and Temperature

12

Vcc = 2.7 V

10

Vcc = 2.6 V

8

6

Power Gain (dB)

4

2

Ta = 25 °C

0

1800 1900 2000 2100 2200

Freque ncy (MHz)

Reverse Isolation vs. Frequency and Voltage

0

-10

-20

-30

-40

Reverse Isolation (dB)

-50

Vcc = 2.6 V

Vcc = 2.7 V

Vcc = 2.8 V

Ta = 25 °C

Vcc = 2.8 V

12

Ta = -30 °C

Ta = 25 °C

10

Ta = 85 °C

8

6

Power Gain (dB)

4

2

Vcc = 2. 7 V

0

1800 1900 2000 2100 2200

Freque ncy (MHz)

Reverse Isolation vs. Frequency and Temperature

0

-10

-20

-30

Ta = 25 °C

-40

Reverse Isolation (dB)

-50

Ta = -30 °C

Vcc = 2.7 V

Ta = 85 °C

-60
1800 1900 2000 2100 2200

Frequency (MHz)

Input Return Loss vs. Frequency and Voltage

0

-2

-4

-6

-8

-10

-12

Input Return Loss (dB)

-14

-16

-18

Vcc = 2. 7 V

Vcc = 2. 8 V

Vcc = 2. 6 V

-20

1800 1900 2000 2100 2200

Freque ncy (MHz)

6/9

Ta = 25 °C

-60
1800 1900 2000 2100 2200

Frequency (MHz)

Input Return Loss vs. Frequency and Temperature

0

-2

-4

-6

-8

-10

-12

Input Return Loss (dB)

-14

-16

-18

-20
1800 1900 2000 2100 2200

Frequency (MHz)

Ta = -30 °C

Vcc = 2.7 V

Ta = 25 °C

Ta = 85 °C

TYPICAL PERFORMANCE (PCS BAND)

Output Return Loss vs. Frequency and Voltage

STB7102

Output Return Loss vs. Frequency and Temperature

0

-5

-10

-15

-20

-25

-30

Output Return Loss (dB)

Vcc = 2.7 V

Vcc = 2. 8 V

Vcc = 2.6 V

-35

-40

-45
1800 1900 2000 2100 2200

Freque ncy (MHz)

Noise Figure vs. Frequency

6

5.5

5

4.5

4

3.5

Noise Figure (dB)

3

2.5

2

1800 1900 2000 2100 2200

Freque ncy (MHz)

Ta = 2 5 °C

0

Vcc = 2.7 V

-5

-10

-15

Ta = -30 °C

-20

-25

-30

Output Return Loss (dB)

Ta = 85 °C

Ta = 25 °C

-35

-40

-45
1800 1900 2000 2100 2200

Freque ncy (MHz)

Output Power @ 1dB compression point

P1dB

F = 2087.5 MHz

-12-11-10-9-8-7-6-5-4-3-2-1 0 1 2

Poutput (dBm)

11

10

9

Gain (dB)

8

7

6

7/9

STB7102

SOT323-6L MECHANICAL DA TA

mm Inch

DIM.

A 0.8 1.1 0.031 0.043
A1 0 0.1 0 0.004
A2 0.8 1 0.0031 0.039

b 0.15 0.3 0.006 0.012

c 0.1 0.18 0.004 0.007
D 1.8 2.2 0.071 0.088
E 1.15 1.35 0.045 0.59
e 0.65 0.025
H 1.8 2.4 0.071 0.094
Q 0.1 0.4 0.004 0.016

MIN. TYP. MAX MIN. TYP. MAX

8/9

STB7102

p

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