U2795B [TEMIC]
2.5-GHz Double Balanced Mixer; 2.5 GHz的双平衡混频器
| 型号： | U2795B |
| 厂家： | 
TEMIC SEMICONDUCTORS |
| 描述： | 2.5-GHz Double Balanced Mixer |
| 文件： | 总13页 (文件大小：351K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
U2795B
TELEFUNKEN Semiconductors
2.5-GHz Double Balanced Mixer
Description
U2795B is a 2.5-GHz mixer for WLAN and RF telecom- isolation characteristics and a minimum of spurious
munications equipment, e.g., DECT and PCN, built with products. The input and output are single ended, and their
TELEFUNKEN’s advanced bipolar technology.
A
characteristics are programmable. No output transformer
double balanced approach was chosen to assure good or balun is required.
Features
Benefits
Reduced system costs due to few external component
(no balun) requirements
Supply voltage range: 2.7 to 5.5 V
Single-ended output, no balun required
Single-ended input for RF and LO
Exellent isolation characteristics
Power down mode
Standard independent product
3-V operation reduces the battery count and saves
space
IP3 and compression point programmable
2.5-GHz operating frequency
SO-8 package
Block Diagram
V
S
2
R
2
IF
o
RF
i
5
3
S
o
P
4
V
R
1
R
V
H
V
PD
8
Voltage
regulator
H
93 7811 e
LO
7
1
V
i
GND
6
S
Rev. A2: 08.06.1995
1 (13)
U2795B
TELEFUNKEN Semiconductors
Pin Description
Pin
1
2
3
4
5
6
7
8
Symbol
Function
Supply voltage
RF input
Progamming port IP3, CP
Output symmetry
IF output
Ground
LO input
Power down
PD
LO
1
2
3
4
V
8
7
6
5
V
S
S
RF
P
i
RF
P
i
I
S
O
IF
O
GND
GND
LO
i
S
IF
O
O
PD
94 7890 e
Functional Description
Supply Voltage
Current Consumption, IS
Depending on the chosen input and output conditions of
The IC is designed for a supply voltage of 2.7 to 5.5 V. As
the IC is internally stabilized, the performance of the
circuit is nearly independent of the supply voltage.
the IC, the current consumption, I is between 4 mA and
S,
10 mA. The current consumption in dependence of Rp is
shown in figure 4.
Input Impedance
Power Down
Input impedance, Z , is about 700 with an additional
capacitive component. This condition provides the best
noise figure in combination with a matching network.
RFi
This feature provides an extension of battery life. If this
function is not used, Pin 8 has to be connected to V
(Pin 1).
S
3. Order Intercept Point (IP3)
Output Symmetry
The symmetry of the load current can be matched and so
be optimized for a given load impedance.
Voltage divider, R / R determinates both the input and
P
1,
output intercept point, IIP3 and OIP3. If R is infinity the
P
IIP3 has the maximum of about –4 dBm.
The IP3/R characteristics are shown in figure 1 and 2.
P
Output Impedance and Intercept Point
Output impedance is shown in figure 9.
Both low output impedance and a high intercept point are
with reference to a high value of R .
P
2 (13)
Rev. A2: 08.06.1995
U2795B
TELEFUNKEN Semiconductors
Absolute Maximum Ratings
Parameters
Symbol
V
S
Value
6
Unit
V
Supply voltage
Pin 1
Input voltage
Junction temperature
Storage temperature range
Pins 2, 3, 7 and 8
V
T
T
stg
0 to V
125
–40 to +125
V
°C
°C
I
j
S
Thermal Resistance
Parameters
Symbol
R
thja
Value
175
Unit
K/W
Junction ambient
SO 8
Pin 1
Operating Range
Parameters
Symbol
Value
2.7 to 5.5
–40 to +85
Unit
V
°C
Supply voltage range
V
S
Ambient temperature range
T
amb
Rev. A2: 08.06.1995
3 (13)
U2795B
TELEFUNKEN Semiconductors
Electrical Characteristics
V = 3 V, f = 1 GHz, IF = 900 MHz, RF = 100 MHz, R = , system impedance Zo = 50 , T = 25 C, R = 56
S
LOi
P
amb
T
reference point Pin 6, unless otherwise specified
Parameters
Supply voltage range
Typical supply current
Test Conditions / Pin
Pin 1
Pin 1
Symbol
V
S
Min.
2.7
4
Typ.
Max.
5.5
11
Unit
V
mA
I
S
1
range
Maximum supply current Pin 1
I
13
mA
S
Conversion power gain
R = 50 , R =
PG
PG
9
4
dB
dB
L
T
C
C
R = 50 , R = 56
L
T
Operating frequencies
RF frequency
Pin 2
Pin 7
Pin 5
RF
f
LOi
10
50
50
2500
2500
2500
MHz
MHz
MHz
i
i
LO frequency
i
IF frequency
o
f
IFo
Isolation
LO spurious at R
Pin 7 to 2
Fi
P
= –10 to 0 dBm
IS
IS
–30
35
dBm
dB
iLO
LO-RF
RF-LO
RF to LO
Pin 2 to 7
= –25 dBm
i
i
P
iRF
LO spurious at IF
Pin 7 to 5,
= –10 to 0 dBm
Pin 5 to 7
IS
IS
–25
30
dBm
dB
o
LO-IF
IF-LO
P
iLO
IF to LO
o
i
Output (IF)
Output compression point Pin 5
CP
–10
dBm
o
Input (RF)
Input impedance
Input compression point
Third order input
intercept point
Pin 2
Pin 2
Pin 2
Z
CP
IIP3
700 0.8pF
RFi
–14
–4
dBm
dBm
i
Input (LO)
LO level
Pin 7
P
iLO
–6
dBm
Voltage standing wave ratio (VSWR)
Input LO
Output IF
Pin 7
Pin 4
VSWR
VSWR
<2
<2
LOi
IFo
Noise performance
Noise figure
Power down mode
Supply current
P
= 0 dBm, R =
NF
10
dB
A
iLO
T
Pin 1 V < 0.5 V
I
30
PD
SPD
Pin 1 V = 0 V
<5
PD
Power down voltage
“Power ON”
Pin 8 V = 3.5 to 5.5 V
V
S
–0.5
V +0.5
V
V
V
S
S
V = 2.7 to 3.5 V
V
V
V
S
V +0.5
S
PON
S
“Power DOWN”
Pin 8
1
PDN
Power down current
Pin 8 Power ON
I
I
0.15
< 5
mA
A
PON
PDN
Power DOWN
Settling time
Pin 8 to 5
t
<30
s
sPD
Note 1:
Depending on R
P
4 (13)
Rev. A2: 08.06.1995
U2795B
TELEFUNKEN Semiconductors
–4
–5
3
–1
–6
–7
–5
–8
–9
–9
–13
–10
100
100
0
20
40
R ( k
60
)
80
0
20
40
R ( k
60
)
80
94 9237
94 9235
p
p
Figure 3. Gain versus resistor Rp, LO: 1030 MHz,
level –10 dBm; RF: 130 MHz, –30 dBm, RT = 56
Figure 1. IIP3 versus resistor Rp, IF: 900 MHz
0
–5
12
10
8
–10
6
–15
–20
–25
4
2
0
100
0
20
40
R ( k
60
)
80
100
0
20
40
R ( k
60
)
80
94 9236
p
94 9238
p
Figure 2. OIP3 versus resistor Rp, IF: 900 MHz
Figure 4. Supply current IS versus resistor Rp
Rev. A2: 08.06.1995
5 (13)
U2795B
TELEFUNKEN Semiconductors
18
14
12
10
8
with RF input matching:
L =220nH, C =4.7pF
s
p
without R
T
10
6
6
2
4
2
with R =56
T
–2
0
2500
0
500
1000
1500
2000
0
200
400
600
800
94 9239
IF ( MHz )
94 9241
IF ( MHz )
Figure 5. Gain versus IF output frequency,
LO level: –6 dBm, RF: 130 MHz, –35 dBm;
parameter: RF input termination
Figure 7. Double sideband noise figure versus IF output
frequency; LO: 1000 MHz, level 0 dBm; no RF input matching,
RT left out
0
5
4
3
2
1
–2
with R = 56
T
–4
–6
–8
without R
T
–10
–12
–14
–16
–18
with RF input matching:
L = 220 nH, C = 4.7 pF
s
p
0
500
1000
1500
2000
2500
1000
100
280
460
640
820
94 9240
IF ( MHz )
95 9652
IF Frequency ( MHz )
Figure 6. IIP3 versus IF output frequency,
LO level: –6 dBm; RF: 130 MHz / 130.1 MHz,
–35 dBm; parameter: RF input termination
Figure 8. Typical VSWR frequency response
of the IF output, RP =
6 (13)
Rev. A2: 08.06.1995
U2795B
TELEFUNKEN Semiconductors
j
0.5j
2j
0.2j
5j
0
0.2
0.5
1
2
5
–0.2j
–5j
–0.5j
–2j
94 9473
–j
Figure 9. Typical Impedance of the output versus RP at frequency fIFo = 900 MHz
markers (from left to right): RP = / 22 k / 10 k / 8.2 k / 5.6 k
Rev. A2: 08.06.1995
7 (13)
U2795B
TELEFUNKEN Semiconductors
j
0.5j
2j
0.2j
5j
0
0.2
0.5
1
2
5
–0.2j
–5j
–0.5j
–2j
95 9651
–j
Figure 10. Typical S11 frequency response of the IF output, RP =
IF frequency from 100 MHz to 1000 MHz, marker: 900 MHz
,
8 (13)
Rev. A2: 08.06.1995
U2795B
TELEFUNKEN Semiconductors
j
0.5j
2j
0.2j
5j
0
0.2
0.5
1
2
5
–0.2j
–5j
–0.5j
–2j
95 9653
–j
Figure 11. Typical S11 frequency response of the RF intput, RP = , RT =
RF frequency from 100 MHz to 1000 MHz, marker: 900 MHz
Rev. A2: 08.06.1995
9 (13)
U2795B
TELEFUNKEN Semiconductors
j
0.5j
2j
0.2j
5j
0
0.2
0.5
1
2
5
–0.2j
–5j
–0.5j
–2j
95 9654
–j
Figure 12. Typical S11 frequency response of the LO intput, RP =
LO frequency from 100 MHz to 1000 MHz, marker: 900 MHz
,
10 (13)
Rev. A2: 08.06.1995
U2795B
TELEFUNKEN Semiconductors
Application Circuit (Evaluation Board)
94 8512
Application
94 8511
C1
C7
1
2
3
4
PD
LO
V
8
7
6
5
S
R
T
C5
C4
C2
RF
R
P
C6
IF
R
SO
C3
R
I
Rev. A2: 08.06.1995
11 (13)
U2795B
TELEFUNKEN Semiconductors
With the part list values, the PD settling time is 20 s.
Using other values, time requirements in burst-mode
appli- cations have to be considered.
Part List
C 1
10 nF
C2, C3, C4, C5, C6, C7
100 pF
*R
P
Values of R and R depending on the input and output
SO
P
condition requirements. For R 68 is recommended.
50- Microstrip
SO
*R
68
SO
With the optional R the intercept and compression point
I
optional
56
can be slightly increased; values between 500 and 1 k
are suitable. Please note that such modification will also
increase the supply current.
R
T
Application Board
Ordering Information
Extended Type Number
U2795B-FP
Package
SO 8
95 9697
Dimensions in mm
Package: SO 8
94 8862
12 (13)
Rev. A2: 08.06.1995
U2795B
TELEFUNKEN Semiconductors
Ozone Depleting Substances Policy Statement
It is the policy of TEMIC TELEFUNKEN microelectronic GmbH to
1. Meet all present and future national and international statutory requirements.
2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems
with respect to their impact on the health and safety of our employees and the public, as well as their impact on
the environment.
It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as
ozone depleting substances (ODSs).
The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and
forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban
on these substances.
TEMIC TELEFUNKEN microelectronic GmbH semiconductor division has been able to use its policy of
continuous improvements to eliminate the use of ODSs listed in the following documents.
1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively
2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Protection Agency (EPA) in the USA
3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively.
TEMIC can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain
such substances.
We reserve the right to make changes to improve technical design and may do so without further notice.
Parameters can vary in different applications. All operating parameters must be validated for each customer
application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized
application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of,
directly or indirectly, any claim of personal damage, injury or death associated with such unintended or
unauthorized use.
TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
Telephone: 49 (0)7131 67 2831, Fax number: 49 (0)7131 67 2423
Rev. A2: 08.06.1995
13 (13)
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