U4065B_技术文档

U4065B

FM Receiver

Description

The IC U4065B is a bipolar integrated FM-frontend device is designed for high performance car radio and

circuit. It contains a mixer, an oscillator, two IF home receiver applications.

preamplifiers and an unique interference sensor. The

Features

All frontend functions of a high performance FM-

receiver, except the RF preamplifier, are integrated

Easy cascading of three IF filters (ceramic) by use of

two on-chip IF preamplifiers

Improved dynamic range by high current double

balanced mixer design and a new AGC conception

with 3 loops on chip

On-chip control functions are available for system

gain adjust (dB linear vs. dc current)

Low noise LO design

ESD protected

Improved blocking and intermod behavior by use of

an unique “interference” sensor controlling the AGC

Block Diagram

V

S

V

S

IF gain adjust

ANT

IF BPF

IF tank

IF BPF

IF outp

IF BPF

19

18

21

7

3

4

5

20

RF tank

16

14

15

2

ATT

Mixer

IF 1

IF 2

AGC

13

wide band

& IF

Inter-

ference

mixer

AGC adjust

(wide band)

RF

RF tank

D.N.C.

12

V

ref

= 4 V

I F &

detector

LO tank

23

24

17

Voltage

reg.

Local

oscill.

11

22

1

8

10

6

9

+

Interference

IF BPF

V

S

LO output

V

tune

V

S

94 8768

AGC level

Rev. A3, 15-Oct-98

1 (23)

U4065B

Pin Description

1

Symbol

Function

13

Symbol

Function

LOBUFF Buffered local oscillator output

AGCWB Threshold adjustment of the

wideband AGC

2

GND1

Ground of the second IF ampli-

fier

14

15

GND3

Mixer ground

3

4

IF2OUT

Output of the second IF ampli-

fier

MIXIN1

Input 1 of the double balanced

mixer

GAINIF1 Gain control of the first

IF amplifier

16

MIXIN2

Input 2 of the double balanced

mixer

5

6

7

8

9

IF2IN

VS

Input of the second IF amplifier

17

18

19

20

VREF

Reference voltage output

Supply voltage

MIXOUT1 Mixer output 1

MIXOUT2 Mixer output 2

IF1OUT

GND2

IMIFIN

Output of the first IF amplifier

Ground

GND4

Ground of the first

IF amplifier

Input of the amplifier for the

IM-sensor

21

22

23

24

IF1IN

GND5

LOE

Input of the first amplifier

Oscillator ground

10

AGCOUT Output of the automatic gain

control

Local oscillator (emitter)

Local oscillator (base)

11 IMMIXOUT Output of the intermodulation

mixer

LOB

12

D.N.C.

Do not connect

LOBUFF

GND1

+

94 8769

94 8770

23

50

1

ESD

1 V

8

ESD

2

Buffered local oscillator output:

It drives the FM-input of the PLL circuit (for example

Ground of the second IF amplifier:

U428xBM-family). The typical parallel output resistance There is no internal connection to the other ground pins.

at 100 MHz is 70 , the parallel output capacitance is

about 10 pF. When using an external load of 500

/

10 pF, the oscillator swing is about 100 mV. The second

harmonic of the oscillator frequency is less than

– 15 dBc.

2 (23)

Rev. A3, 15-Oct-98

U4065B

The parallel input resistance is 330 . The parallel input

capacitance is about 12 pF. No dc current is allowed. To

avoid overload of this stage an internal detector watches

the input level and causes current at the AGCOUT pin.

IF2OUT

3

ESD

V

S

IF1OUT

V

S

V

ref

ESD

94 8771

330

Output of the second IF amplifier:

The parallel output capacitance to ground is about 7 pF.

7

The external load resistance is to connect to V . The dc

S

current into the pin is typically 3 mA.

Note: Supply voltage V has to be protected against

S

IF-distortion

94 8774

GAINIF1

V

ref

17

Output of the first IF amplifier:

The parallel output resistance is 330 which allows the

use of a standard ceramic BPF. The parallel output capa-

citance is about 7 pF. The dc voltage at the pin is 0.5 V

2 k

less than V .

S

ESD

Gain control of the first IF amplifier:

4

94 8772

IMIFIN

The gain of the first IF amplifier can be adjusted by a re-

sistor to ground. This is useful for example to com-

pensate the insertion loss tolerances of the ceramic BPF’s.

Please ensure that the output current of the pin does not

exceed 150 A in any case. Linear increasing in the cur-

rent out of GAINIF1 effects dB linear increasing of the

gain (0.15 dB/ A).

94 8775

9

I4 = 0

G= Gmin = 2 dB

ESD

I4 = 140 A G = Gmax = 22 dB

IF2IN

94 8773

V

ref

Input of the IF amplifier for the IM-sensor:

5

The parallel input resistance is 330 . The amplifier is ex-

tremely sensitive to ac signals. A few hundred V of

IF-signal at this pin will cause current at the AGC output.

Therefore pay attention when connecting the standard ce-

ramic filter used between IMOUT and this pin. The

reference point of the filter has to be free of any ac signal.

Please avoid dc current at this pin.

ESD

Input of the second IF amplifier:

Rev. A3, 15-Oct-98

3 (23)

U4065B

AGCOUT

MIXIN1

V

ref

94 8776

10

2.5 k

15

ESD

1 k

ESD

1 V

94 8779

Input 1 of the double balanced mixer:

Output of the automatic gain control:

The parallel input resistance is 1.2 k . The parallel input

capacitance is about 9 pF. When using the mixer unbal-

anced this pin is to be grounded for RF-signals by an

external capacitance of a few nF. DC current is not allowed.

The AGC output is an open collector output. The current

of the pin diode is this current multiplied by the current

gain of the external PNP transistor. The dc voltage at the

pin may vary from 2 V to V , therefore you can easily use

S

this pin as an indicator of the AGC regulation state.

MIXIN2

IMMIXOUT

V

ref

V

S

2.5 k

16

ESD

300

11

ESD

94 8780

1 V

Input 2 of the double balanced mixer:

94 8777

The parallel input resistance is 1.6 k . The parallel input

capacitance is about 7 pF. The double sideband noise fig-

ure of the unbalanced mixer is about 7 dB. In the balanced

case the noise figure will be reduced by about 0.8 dB.

Output of the intermodulation mixer:

The parallel output resistance is 330 which allows the

use of a standard ceramic BPF without any further match-

ing network. Please ensure that the ground-pin of the filter

is free of ac signals.

VREF

94 8781

AGCWB

V

S

200

V

ref

25 k

4.6 V

17

ESD

32 k

13

ESD

94 8778

Reference voltage:

The internal temperature compensated reference voltage

is 3.9 V. It is used as bias voltage for most blocks, so the

Threshold adjustment of the wideband AGC:

The threshold of the wideband AGC can be adjusted by electrical characteristics of the U4065B are widely inde-

an external resistor to ground. The setting range is 10 dB. pendent of the supply voltage. The internal output

For minimum blocking this pin is connected to ground. In resistance of the reference voltage is less than 10 . To

order to set the threshold to smaller levels the resistance avoid internal coupling across this pin external capacitors

value should be up to a few hundred k .

are required. The maximum output current is I = 5 mA.

ref

4 (23)

Rev. A3, 15-Oct-98

U4065B

MIXOUT1, MIXOUT2

LOE

ESD

18

19

23

ESD

94 8785

94 8782

Mixer output 1, 2:

Emitter of the local oscillator:

The mixer output is an open collector of a bipolar transis- An external capacitor is connected between LOE and

tor. The minimum voltage at this pins is 5 V (V -voltage ground. The ground pin of this capacitor is to connect to

S

swing). The dc current into this pins is typically 9 mA. the pin GND5. GND5 is the chip internal ground of the

Good LO- and RF suppression at the mixer output can be local oscillator.

achieved by symmetrical load conditions at the pins MIX-

OUT1 and MIXOUT2.

LOB

IF1IN

24

ESD

21

V

ref

330

94 8786

ESD

Input of the first IF amplifier:

Base of the local oscillator:

94 8784

The tank of the local oscillator is connected at pin LOB.

The ground pin of this tank is to connect to the pin GND5.

The typical input resistance is 330 . The dc voltage is GND5 is the chip internal ground into pin 24 of the local

nearly the same one as the reference voltage. Please avoid oscillator. The resonant resistance of the tank should be

dc current at this pin.

about 250 . Minimum Q of the unloaded tank is 50.

Rev. A3, 15-Oct-98

5 (23)

U4065B

Functional Description

The U4065B FM-frontend IC is the dedicated solution for hand two or more strong out of channel signals may inter-

high end car radios. A new design philosophy enables to fere and generate an intermodulation signal on the desired

build up tuners with superior behavior. This philosophy frequency. By introducing input attenuation, the level of

is based on the fact that the sensitivity of state of the art the intermod signal decreases by a higher order, whereas

designs is at the physical border and cannot be enhanced the level of the desired signal shows only a linear depen-

any more. On the other hand, the spectral power density dency on the input attenuation. Therefore input

in the FM-band increases. An improvement of reception attenuation by pin diodes may keep up reception in the

can only be achieved by increasing the dynamic range of presence of strong signals.

the receiver. This description is to give the designer an

The standard solution to generate the pin diode current is

introduction to get familiar with this new product and its

to pick up the RF-signal in front of the mixer. Because the

philosophy.

bandwidth at that point is about 1.5 MHz, this is called

wideband AGC. The threshold of AGC start is a critical

1. The Signal Path

parameter. A low threshold does not allow any intermo-

The U4065B offers the complete signal path of an FM-

dulation but has the disadvantage of blocking if there is

frontend including a highly linear mixer and two IF

only one strong station on the band or if the intermod sig-

preamplifiers. The mixer is a double balanced high cur-

nals do not cover the desired channel. A higher AGC

rent Gilbert Cell. A high transit frequency of the internal

threshold may tolerate a certain ground floor of intermo-

transistors enables the use of the emitter grounded circuit

dulation. This avoids blocking, but it has the

with its favorable noise behavior. The full balanced out-

disadvantage, that no reception is possible, if the interfer-

put offers LO carrier reduction.

ing signals do generate an intermod signal inside the

desired channel. This contradiction could not be over-

come in the past.

The following IF preamplifier has a dB-linear gain adjust-

ment by dc means. Thus different ceramic filter losses can

be compensated and the overall tuner gain can be adapted

to the individual requirements. The low noise design sup-

presses post stage noise in the signal path. Input- and

output resistance is 330 to support standard ceramic fil-

ters. This was achieved without feedback, which would

cause different input impedances when varying the output

impedance.

With the new U4065B IC, a unique access to this problem

appears. This product has an interference sensor on chip.

Thus an input signal attenuation is only performed, if the

interfering signals do generate an intermod signal inside

the desired channel. If they do not, the still existing wide-

band AGC is yet active but at up to 20 dB higher levels.

The optimum AGC state is always generated.

The second IF preamplifier enables the use of three ce-

The figures 1 to 4 illustrate the situation. In figure 1 the

AGC threshold of a standard tuner is high to avoid block-

ing. But then the intermod signal suppresses the desired

signal. The interference sensor of the U4065B takes care

that in this case the AGC threshold is kept low as illus-

trated in figure 2.

ramic filters with real 330

input- and output

termination. Feedthrough of signals is kept low. The high

level of output compression is necessary to keep up a high

dynamic range.

Beneath the signal path the local oscillator part and the

AGC signal generation can be found on chip. The local

oscillator uses the collector grounded colpitts type. A low

phase noise is achieved with this access. A mutual cou-

pling in the oscillator coil is not necessary.

In figure 3 the situation is vice versa. The AGC threshold

of a standard tuner is kept low to avoid intermod prob-

lems. But then blocking makes the desired signal level

drop below the necessary stereo level. In this case, the

higher wideband AGC level of the U4065B enables per-

fect stereo reception.

2. The AGC Concept

Special care was taken to design a unique AGC concept.

It offers 3 AGC loops for different kinds of reception

conditions. The most important loop is the interference

sensor part.

By principle, this interference sensor is an element with

a third order characteristic. For input levels of zero, the

output level is zero, too. With increasing input level, the

output level is increased with the power of three, thus pre-

ferring intermod signals compared to linear signals. At

the same time, a down conversion to the IF level of

10.7 MHz is performed. If a corresponding 10.7 MHz IF

filter selects the intermod signals, an output is only gener-

ated, if an intermod signal inside the 10.7 MHz channel

is present.

In today’s high end car radios, the FM AGC is state of the

art. It is necessary to reduce the influence of 3rd and

higher order intermodulation to sustain reception in the

presence of strong signals in the band. On one hand, it

makes a sense to reduce the desired signal level by AGC

as few as possible to keep up stereo reception, on the other

6 (23)

Rev. A3, 15-Oct-98

U4065B

The circuit blocks interference sensor and IF & detector this unique feature.

build up a second IF chain. In an FM system, the max

deviation of a 3rd order intermod signal is the triple max A further narrow band AGC avoids overriding the second

deviation of the desired signal. Therefore the ceramic IF IF amplifier. The amplitude information of the channel is

BPF between Pin 11 and Pin 9 may be a large bandwidth not compressed in order to maintain multipath detection

type. This external part is the only additional amount for in the IF part of the receiver.

94 8821

Level

94 8820

Interfering signals

Intermod signal

Desired

signal

Desired

signal

Stereo-level

Noise floor

Stereo-level

Noise floor

Intermod signal

Desired

frequency

Desired

frequency

Frequency

Figure 1 A high AGC threshold causes the intermod

signal to suppress the desired signal

Figure 2 The correct AGC threshold of the U4065B

provides optimum reception

94 8822

94 8823

Level

Strong signal

Desired

signal

Stereo-level

Desired

signal

Noise floor

Desired

frequency

Desired

frequency

Frequency

Figure 3 A low AGC threshold causes the blocking

signal to suppress the desired signal

Figure 4 The correct AGC threshold of the U4065B

provides optimum reception

Rev. A3, 15-Oct-98

7 (23)

U4065B

Absolute Maximum Ratings

Reference point is ground (Pins 2, 8, 14, 20 and 22)

Parameters

Symbol

Value

10

Unit

V

Supply voltage

V

S

Power dissipation at T

Junction temperature

= 85°C

P

470

mW

°C

V

amb

tot

T

125

j

Ambient temperature range

Storage temperature range

T

amb

– 30 to + 85

– 50 to + 125

2000

T

stg

Electrostatic handling:

V

ESD

Human body model (HBM),

all I/O pins tested against the supply pins.

Thermal Resistance

Parameters

Symbol

Maximum

90

Unit

K/W

Thermal resistance

R

thJA

Electrical Characteristics

V = 8.0 V, f = 98 MHz, f

108.7 MHz, f = f

– f = 10.7 MHz

OSC RF

S

RF

OSC

IF

Reference point ground (Pins 2, 8, 14, 20 and 22),T

= 25 C, unless otherwise specified

amb

Parameters

Supply voltage

Test Conditions / Pins

Symbol

Min.

7

Typ.

8

Max.

10

Unit

Pins 3, 6, 10, 18 and 19

Pins 3+6+10+18+19

V

S

V

Supply current

I

37

47

mA

tot

Oscillator

(GND5 has to be connected to external oscillator components)

R

g24

= 220 , unloaded Q

of L

= 70, R = 520

L1

OSC

Pin 24

Pin 23

Pin 1

V

160

100

90

LOB

LOE

Oscillator voltage

mV

dBc

V

70

220

–15

LOBUFF

Harmonics

Output resistance

Voltage gain

Mixer

R

70

LO

Between pins 1 and 23

(GND3 has to be separated from GND1, GND2 and GND4)

0.9

Conversion power gain

3rd order input intercept

Conversion transconductance

Noise figure

Source impedance:

= 200

G

5

4

7

6

10

14

dB

dBm

mA/V

dB

k

C

R

G15,16

IP

3

Load impedance:

= 200

g

C

8

R

L18,19

NF

7

DSB

ignd15

ignd16

ii15,16

Input resistance to ground

Input capacitance to ground

Input resistance to ground

Input capacitance to ground

Input-input resistance

Pin 15

f = 100 MHz

R

C

R

C

R

C

1.2

9

pF

Pin 16

f = 100 MHz

1.6

7

k

pF

Between Pin 15 and Pin 16

1.6

5

k

Input-input capacitance

pF

Output capacitance to GND Pin 18 and Pin 19

First IF preamplifier (IF 1)

C

9

pF

ignd18,19

Gain control deviation by I₄Pin 4

Gain control slope

17

20

24

dB

dG /dI

0.15

dB/ A

IF1

4

8 (23)

Rev. A3, 15-Oct-98

U4065B

Electrical Characteristics (continued)

V = 8.0 V, f = 98 MHz, f

108.7 MHz, f = f

– f = 10.7 MHz

OSC RF

S

RF

OSC

IF

Reference point ground (Pins 2, 8, 14, 20 and 22),T

= 25 C, unless otherwise specified

amb

Parameters

Test Conditions / Pins

Symbol

Min.

Typ.

Max.

Unit

A

External control current to

ground at G

at G

I

0

70

140

min

nom

max

4min

I

4nom

at G

I

4max

Power gain

at I

Between pins 21 and 7

Source impedance:

G

–2.5

11

19

2

12

22

2.5

16

28

4min

4nom

4max

min

nom

max

dB

R

= 200 ,

G21

Noise figure

at G

NF

7

9

15

max

nom

min

nom

max

Load impedance:

dB

R

L7

= 200

Temperature coefficient of

the gain at G

TKnom

+0.045

dB/K

nom

1 dB compression at G

–3 dB cutoff freq. at G

Input resistance

Pin 7

V

70

50

330

5

mV

nom

cnom

f

MHz

nom

cnom

Pin 21

f = 10 MHz

R

C

270

400

iIF1

oIF1

Input capacitance

Output resistance

pF

dB

Pin 7

f = 10 MHz

R

C

330

7

Output capacitance

Second IF preamplifier (IF 2)

Power gain

etween pins 5 and 3

Source impedance:

G

15

18

19

IF2

R

G5

= 200

Load impedance:

=200

R

L3

Noise figure

NF

7

500

50

330

12

50

7

dB

mV

IF2

1 dB compression

Pin 3

V

comp

–3 dB cutoff frequency

Parallel input resistance

Parallel input capacitance

Parallel output resistance

Parallel output capacitance

Voltage regulator

f

MHz

c

Pin 5

f = 10 MHz

R

270

400

iIF2

oIF2

C

pF

k

Pin 3

f = 10 MHz

R

C

pF

Regulated voltage

Pin 17

V

3.7

5

3.9

7

4.9

50

V

ref

Maximum output current

I

mA

ref

Internal differential

resistance,

r

d17

dc /di when I = 0

17 17

17

Power supply suppression

f = 50 Hz, Pin 17

psrr

36

50

dB

AGC input voltage thresholds (AGC threshold current is 10 A at Pin 10)

IF2 input

Pin 5

V

85

42

86

43

92

48

dB V

thIF2

IF & detector

Pin 9

V

thIFD

Mixer input level of

wideband sensor

Between Pins 15 and 16

f

= 100 MHz

iRF

V at pin 13 = 0 V

I through pin 13 = 0 A

V

thWB1

V

thWB2

95

85

98

87

100

90

dB V

Rev. A3, 15-Oct-98

9 (23)

U4065B

Test Circuit

4.7n

vo IF

4.7n

vi IF

50

6

2

1

5

1

6

2

Gain IF 1

0 to 140 A

50

5

I4

4

RG5

RL7

vi IF

50

7

20

5

2

50

1

vo IF

I3

5

2

1

6

5

2

21

3

6

Vs

RG21

4.7n

RL3

IF 1

IF 2

I18,19

Vs

vo IF

V

I10

10

13

18

AGC

block

2

6

5

1

50

I13 R13

AGC adjust

RL18,19

19

14

(wide band)

Mixer

4.7n

15

16

2

6

5

Voltage

Vs

RG15,16

regulator

I6

50

1

4.7n

1

Vref = 4 V

RG9

Interference

mixer

vi RF

17

8 p

Rg24

24

23

4.7n

Local

Interference

amplifier

9

2

6

47p

33p

oscillator

fosc

Cosc

Losc

1

5

50

8

11

1

12

22

vi IF

RLOBUFF

470p

RG11

Z/Ohm

50 200

vo IF

1

2

1

2

4

RF Transformers MCL

Type TMO 4 – 1

IL = 0.7 dB

50

vLOBUFF

fLOBUFF

6

5

RL1

94 8829

4.7n

0

5

6

10 (23)

Rev. A3, 15-Oct-98

U4065B

Local Oscillator

R

g24

v

OSC24

24

23

Local

oscillator

47p

33p

f

OSC

Oscillator

output

v

, f

OSC1 OSC

1

buffer

520

T

amb

94 9410

Free running oscillator frequency f

110 MHz, v

= 160 mV, R =220 , Q = 70

OSC24 g24 L

OSC

180

160

140

120

100

80

60

40

20

0

–30

–10

10

30

50

( °C )

70

90

94 9411

T

amb

Oscillator swing versus temperature

Rev. A3, 15-Oct-98

11 (23)

U4065B

Mixer

f

= 110.7 MHz, v

160 mV, f = 10.7 MHz

OSC

OSC24

IF

vo_IF

IL2

50

18

19

14

IL1

2vi_RF1

f_RF1

2vi_RF2

f_RF2

1

5

2

1

5

2

6

Mixer

6

50

15

R_g24

24

23

Local

V_S

oscillator

47p

22p

f_OSC

T_amb

Conversion power gain G_C= 20 log (vo_IF/vi_RF) + IL1 (dB) + IL2 (dB)

IL1, IL2 insertion loss of the RF transformers

120

Conversion

characteristic

100

3rd order

IM-characteristic

80

60

40

20

0

20

40

60

80

100

120

94 9413

vi , vi

( dB V )

RF2

RF1

Characteristic of the mixer

12 (23)

Rev. A3, 15-Oct-98

U4065B

8

7

6

5

4

3

2

1

0

11.0

10.7

10.4

10.1

9.8

9.5

9.2

8.9

8.6

8.3

8.0

–30

–10

10

30

50

( °C )

70

90

–30

–10

10

30

50

( °C )

70

90

94 9414

T

94 9415

T

amb

Conversion power gain of the mixer stage

versus temperature

Current of the mixer stage versus temperature

1^stIF Preamplifier

2 : 1

IL2

vo_IF

50

vo_IF7

1 : 2

IL1

vi_IF2121

R_g21= 200

7

IF

R_L7= 200

2

6

1

5

50

T_amb

V(PIN4)

I4

4

f_IF

2vi_IF

6

5

94 9416

Power gain G_IF= 20 log (vo_IF/vi_IF) + IL1 (dB) + IL2 (dB)

IL1, IL2 = insertion loss of the RF transformers

Rev. A3, 15-Oct-98

13 (23)

U4065B

25

20

15

10

5

25

20

15

10

5

G

max

T = 90°C

G

nom

T = -30°C

G

min

0

–5

–10

T = 30°C

–5

0

20

40

60

80 100 120 140

10 20 30 40 50 60 70 80 90 100

f ( MHz )

94 9417

I ( A )

94 9418

4

Power gain of the first IF amplifier versus I4

Power gain of the first IF amplifier versus frequency

3.8

3.6

3.4

T = 90°C

3.2

3.0

T = –30°C

2.8

T = 30°C

2.6

2.4

2.2

2

0

20

40

60

80 100 120 140

94 9419

I ( A )

4

V (Pin 4) versus I

4

14 (23)

Rev. A3, 15-Oct-98

U4065B

2^ndIF Preamplifier

V_S

330

2 : 1

IL2

3

vo_IF3

R_L3= 200

vo_IF

5

1 : 2

vi_IF5

R_g5= 200

IF

IL1

1

5

2

6

1

5

50

f_IF

T_amb

6

2vi_IF

Power gain G_IF= 20 log (vo_IF/vi_IF) + IL1 (dB) + IL2 (dB)

IL1; IL2 = insertion loss of the RF transformers

94 9420

18.5

18.0

17.5

17.0

16.5

16.0

15.5

20

18

16

14

12

10

8

6

4

2

15

0

–30–20–10 0 10 20 30 40 50 60 70 80 90

10 20 30 40 50 60 70 80 90 100

f ( MHz )

94 9421

T

amb

( °C )

94 9422

Power gain of the second IF amplifier versus tempera-

ture

Power gain of the second IF amplifier versus frequency

Rev. A3, 15-Oct-98

15 (23)

U4065B

87.0

86.8

86.6

86.4

86.2

86.0

10000.00

1000.00

100.00

10.00

1.00

I10 (–30°C ) /

I10 (30°C ) /

I10 (90°C ) /

A

0.10

0.01

–30

–10

10

30

50

( °C )

70

90

80

85

90

95

100

105

94 9423

T

94 9424

vi ( dB A )

amb

IF

AGC threshold (I10 = 1 A) of the second IF amplifier

versus temperature

AGC characteristic of the second IF amplifier input

Interference Sensor (Mixer)

50

15

16

IL1

R_L11= 200

11

2vi_RF1

fi_RF1

Interference

mixer

2

6

1

5

R_g15/16

=200

IL2

vo_IF

2vi_RF2

fi_RF2

f_IF

1

5

2

6

50

f_LO

Local

oscillator

V_S

IL1=IL2=0.7dB

94 9425

Test conditions for characteristic vo_IFversus vi_RF1

_LO= 100 MHz, f_RF1= 89.3 MHz, vi_RF2= 0, f_IF= f_LO– f_RF1= 10.7 MHz

Test conditions for 3rd order IM-characteristic vo_IFversus vi_RF1, vi_RF2

_LO= 100 MHz. f_RF1=89.4 MHz, f_RF2= 89.5 MHz, f_IF= f_LO– (2 f_RF1–1 f_RF2) = 10.7 MHz

IL1, IL2 = insertion loss of the RF transformer

:

f

:

f

16 (23)

Rev. A3, 15-Oct-98

U4065B

90

80

70

60

50

40

30

20

10

0

100

90

80

70

60

50

40

30

20

Conversion

characteristic

–30°C

30°C

90°C

3rd order

IM-characteristic

60 65 70 75 80 85 90 95 100

70 75 80 85 90 95 100 105 110 115

vi ( dB V )

94 9426

vi ( dB V )

RF

94 9428

RF

Characteristic of the interference sensor (mixer)

Conversion characteristic of the interference sensor

(mixer)

80

70

60

50

–30°C

40

30°C

90°C

30

20

70 75 80 85 90 95 100 105 110 115

94 9427

vi , vi

( dB V )

RF1

RF2

Third order interference characteristic of the interfer-

ence sensor (mixer)

Interference Sensor (Amplifier)

vi_IF9

10

9

1 : 2

IL1

V_S

IF

I10

R_g9= 200

2

6

1

5

50

T_amb

f_IF

2vi_IF

94 9429

IL1=0.7dB

Rev. A3, 15-Oct-98

17 (23)

U4065B

AGC Thresholds

45.0

44.5

44.0

43.5

43.0

42.5

42.0

41.5

41.0

105

100

95

88 MHz

90

98 MHz

108 MHz

85

–30–20–10 0 10 20 30 40 50 60 70 80 90

( °C )

0

5

10 15 20 25 30 35 40 45 50 55

94 9430

T

amb

94 9433

I

13

( A )

AGC threshold of the interference IF amplifier versus

temperature

Wideband AGC threshold (I = 1 A) versus I

10

13

100

U13 = 0 V

98

96

94

I13 = 30

A

92

90

88

86

84

82

80

I13 = 0 A

–30–20–10 0 10 20 30 40 50 60 70 80 90

94 9432

T

amb

( °C )

Wideband AGC threshold (I = 1 A)

10

versus temperature

18 (23)

Rev. A3, 15-Oct-98

U4065B

AGC Characteristics

10000.00

1000.00

100.00

10.00

1.00

10000.00

1000.00

100.00

10.00

1.00

–30°C

30°C

90°C

–30°C

30°C

90°C

0.10

0.01

35

45

55

65

75

85

95

80 85 90 95 100 105 110 115 120

94 9431

vi ( dB V )

IF

94 9435

vi ( dB V )

RF

AGC characteristic of the interference IF & detector

block

Characteristic of the wideband AGC

(I13 = 0 V)

10000.00

1000.00

100.00

10.00

–30°C

1.00

30°C

0.10

90°C

0.01

90

95

100

105

110

115

120

94 9434

vi ( dB V )

RF

Characteristic of the wideband AGC (V13 = 0 V)

Rev. A3, 15-Oct-98

19 (23)

U4065B

DC Characteristics

18

16

14

12

10

8

3.88

3.87

3.86

3.85

3.84

3.83

3.82

3.81

I6

I18, I19

6

4

2

I3

0

6

6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0

( V )

–30–20–10 0 10 20 30 40 50 60 70 80 90

94 9436

V

94 9438

T

amb

( °C )

S

Supply currents versus supply voltage

Reference voltage versus temperature

40

4.00

35

30

25

20

15

10

5

I3 + I6 + I18 + I19

3.95

3.90

3.85

3.80

3.75

I6

I18, I19

I3

0

–30

–10

10

30

50

( °C )

70

90

–10

–8

–6

–4

–2

0

2

94 9437

T

94 9439

I

17

( mA )

amb

Supply currents versus temperature

Reference voltage versus I

17

20 (23)

Rev. A3, 15-Oct-98

U4065B

Part List

Item

Q1

Description

BFR93AR (BFR93A)

BC858

Item

L4

Description

TOKO 7KL–type

# 291ENS 2341IB

Q2

L5

L6

TOKO 7KL–type

# M600BCS-1397N

D1

S392D

D2

S391D

TOKO 7KL–type

# 291ENS 2054IB

D3, 4, 5

L1

BB804

CF1

TOKO type SKM 2

(230 KHZ)

11 turns, 0.35 mm wire, 3 mm

diameter (approx. 220 nH)

CF2, 3, 4

TOKO type SKM 3

(180 KHZ)

L2

L3

2.2 H (high Q type)

TOKO 7KL–type

# 600ENF-7251x

Ordering and Package Information

Extended type number

Package

Remarks

U4065B-AFL

SO 24 plastic

U4065B-AFLG3

Taping according ICE-286-3

Dimensions in mm

9.15

8.65

Package SO24

Dimensions in mm

15.55

15.30

7.5

7.3

2.35

0.25

0.10

0.25

0.4

10.50

10.20

1.27

13.97

24

13

technical drawings

according to DIN

specifications

13037

1

12

22 (23)

Rev. A3, 15-Oct-98

U4065B

Ozone Depleting Substances Policy Statement

It is the policy of TEMIC Semiconductor 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 Semiconductor GmbH 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 Semiconductor GmbH 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 Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany

Telephone: 49 (0)7131 67 2594, Fax number: 49 (0)7131 67 2423

Rev. A3, 15-Oct-98

23 (23)


型号：	U4065B
厂家：	TEMIC SEMICONDUCTORS
描述：	FM Receiver FM接收器
文件：	总23页 (文件大小：288K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

U4065B [TEMIC]

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