BA3834FE2_技术文档

TECHNICAL NOTE

Audio Accessory IC Series

Band-pass Filter for

Spectrum Analyzer Indication

BA3835F, BA3830F, BA3834F

zDescription

As BA3835F, BA3830F, and BA3834F contain band pass filters for spectrum analyzer, external mount parts can

be significantly reduced enabling compact unit size and high reliability.

zFeatures

1) Built-in band pass filter for spectrum analyzer. BA3835F has 5 bands filters, BA3830F has 6 bands filters, and

BA3834F has 7 bands filters.

2) BA3834F and BA3835 have an integrated multiplexer circuit. Controlled by a microcontroller, detection level is serially

output with DC level.

3) BA3830F output for recording indicator. Detection level is parallel output in DC.

4) Support 5V microcomputer bus

5) SOP18 package with few external parts

zApplications

Car audio, mini audio stereo systems, and CD radio cassette players.

zProduct lineup

Item

Number of Band

BA3835F

5

BA3830F

6

BA3834F

7

Center frequency of the band

pass filter (Hz)

68,170,420,1K,2.4K,

5.9K,14.4K

4.5～6.5

105,340,1K,3.4K,10.5K

63,150,330,1K,3.3K,10K

Power voltage（V）

Output type

4.5～6.5

Serial output

-25 ~ +75

SOP18

4.5～8

Parallel output

-25 ~ +75

SOP18

Serial output

-25 ~ +75

Working temperature range（℃）

Package

SOP18

Ver.B Oct.2005

zAbsolute maximum ratings (Ta = 25°C)

Parameter

Symbol

Vcc

Limits

7

Unit

V

BA3834F,BA3835F

BA3830F

Power supply

voltage

9

Power dissipation

Pd

450*

mW

℃

Operating temperature

Storage temperature

Topr

Tstg

-25～+75

-55～+125

℃

＊Reduced by 4.5 mW/°C over 25°C

zRecommended operating conditions (Ta = 25°C)

Parameter

BA3834F,BA3835F

BA3830F

Symbol

Vcc

Min.

4.5

Typ.

5.0

―

Max.

6.5

Unit

V

Power supply

voltage

4.5

8.0

zElectrical characteristics

BA3835F (unless otherwise noted, Ta＝25℃，V_CC＝5V，R_L＝10MΩ,V_AIN＝－30dBV，SEL＝1)

Parameter

Circuit current

Maximum output level

Symbol

I_CC

V_OM

Min.

－

Typ.

8.5

4.8

Max.

13

Unit

mA

V

Conditions

V_AIN= 0V, A, B, C, SEL = 0

V_AIN= -14dBV, Measured at each output

_AIN= 0V, SEL = 0/1

4.0

－

V

Output offset voltage

V_OS

－

30

150

mV

Measured at each output (cycle time : Ts=50ms)

f_IN=105Hz, A=0, B=0, C=1

f_IN=340Hz, A=0, B=1, C=0

f_IN=1kHz, A=1, B=0, C=0

f_IN=3.4kHz, A=1, B=1, C=0

f_IN=10.5kHz, A=1, B=1, C=1

f_IN=1kHz

Standard output level 1

Standard output level 2

Standard output level 3

Standard output level 4

Standard output level 5

Input impedance

V₀₁

V₀₂

V₀₃

V₀₄

V₀₅

R_IN

0.65

80

1.35

100

50

1.70

120

－

V

Common-mode rejection ratio CMRR

Logic input high level

25

2.5

dB

V

f_IN=1kHz, V_AIN=V_CIN

V_IH

5.0

－

Not Applicable in the when item 3 of the

operation notes applies.

Logic input low level

V_IL

－

0

0.5

V

Output response time*¹

Discharge level

T_O

DL

－

5

3

10

－

μs

dB

Reset pulse within T_R=10μs (Typ.)*²

*1 The time from the rise of A, B, C or SEL until the rise of AOUT (90% of peak). If the output selection time is less than this,

the output value is not guaranteed and the reset pulse is not generated.

*2 Automatically generated intemally based on the output select signal. For the duration that this signal is “H”, a resistor is

connected to the peak hold capacitor, and the output level drops by -3dB (typ.) for one pluse,

*3 The Q of the bandpass filter is 3.5.

◎ Not designed for radiation resistance.

2/16

BA3830F (unless otherwise noted, Ta＝25℃，V_CC＝5V，R_L＝10MΩ, Rφ₁＝270kΩ, Rφ₂＝270kΩ）

Parameter

Quiescent current

Reference output level

(LEVEL)

Symbol

I_O

Min.

Typ.

3.8

Max.

5.2

Unit

mA

Conditions

－

V_IN= -30dBV, V_O= 1.5V (0dB)

When f = center frequencies is input

V_IN= -14dBV,

When f = center frequencies is input

V_IN= -30dBV, V_O= 1.5V (0dB)

f = 1kHz

-3

3.2

-3

V_ol

V_olmax

V_or

0

3

－

3

dB

V

Max. output level (LEVEL)

4.2

0

Reference output level

(REC LEVEL)

Max. output level

(REC LEVEL)

dB

V

V_olmax

3.8

4.8

－

V_IN= -14dBV, f = 1kHz

Output offset voltage

Center frequency 1

Center frequency 2

Center frequency 3

Center frequency 4

Center frequency 5

Center frequency 6

Input current when Reset

pin is HIGH

Input current when Reset

pin is ON

Input current when Reset

pin is OFF

V_off

f₀₁

f₀₂

f₀₃

f₀₄

f₀₅

f₀₆

－

49

30

63

150

330

1

90

77

mV

Hz

With no signal

V_IN= -30dBV

117

257

0.78

2.55

7.8

183

403

1.22

4.03

12.2

Hz

kHz

3.3

10

I_IN

V_th

150

－

215

1.4

280

1.8

－

μA

V

V_IN= 5V

1.0

V

＊Q is set to 4.5.

◎ Not designed for radiation resistance.

BA3834F (unless otherwise noted, Ta＝25℃，V_CC＝5V，R_L＝10MΩ,V_AIN＝-30dBV，SEL＝1)

Parameter

Circuit current

Maximum output level

Symbol

I_CC

V_OM

Min.

－

Typ.

10

4.8

Max.

15

Unit

mA

V

Conditions

V_AIN= 0V, A, B, C, SEL=0

V_AIN= -14dBV, Measured at each output

_AIN= 0V, SEL=0/1,

4.0

－

V

Output offset voltage

V_OS

－

30

150

mV

Measured at each output (cycle time : Ts=50ms)

f_IN=68Hz, A=0, B=0, C=1

f_IN=170Hz, A=0, B=1, C=0

f_IN=420Hz, A=0, B=1, C=1

f_IN=1kHz, A=1, B=0, C=0

f_IN=2.4kHz, A=1, B=0, C=1

f_IN=5.9kHz, A=1, B=1, C=0

f_IN=14.4kHz, A=1, B=1, C=1

f_IN=1kHz

Standard output level 1

Standard output level 2

Standard output level 3

Standard output level 4

Standard output level 5

Standard output level 6

Standard output level 7

Input impedance

V₀₁

V₀₂

V₀₃

V₀₄

V₀₅

V₀₆

V₀₇

R_IN

0.65

80

1.35

100

50

1.70

120

－

V

dB

V

Common-mode rejection ratio CMRR

Logic input high level

25

2.5

f_IN=1kHz, V_AIN=V_CIN

V_IH

5.0

－

Not Applicable in the when item 3 of the

operation notes applies.

Logic input low level

V_IL

－

0

0.5

V

Output response time*¹

Discharge level

T_O

DL

－

5

3

10

－

μs

dB

Reset pulse within T_R=10μs (Typ.)*²

*1 The time from the rise of A, B, C or SEL until the rise of AOUT (90% of peak). If the output selection time is less than this,

the output value is not guaranteed and the reset pulse is not generated.

*2 Automatically generated intemally based on the output select signal. For the duration that this signal is “H”, a resistor is

connected to the peak hold capacitor, and the output level drops by -3dB (typ.) for one pulse,

*3 The Q of the bandpass filter is 3.5 for f₀₁to f₀₆, and 2.5 for f₀₇.

◎ Not designed for radiation resistance.

3/16

zApplication example (BA3835F)

Digital system GND

GND

18

BIASIC

1

0. 1µF

/

BIAS

VREF

2

AOUT

17

0. 1µF

TEST

16

RREF

3

100KΩ

REFERENCE CURRENT

N.C

4

N.C

15

105Hz

BPF

PEAK

HOLD

DIFOUT

5

SEL

14

GND

RES

A_C

I/O(A/D)

PEAK

HOLD

340Hz

BPF

RES

N.C

6

N.C

13

1kH

BPF

PEAK

HOLD

MPX

I/O

Display

µ-COM

RES

CIN

7

C

3.4kH

BPF

PEAK

HOLD

Audio system

GND

C

A

I/O

DIF

12

RES

0.1µF

L

10KΩ

10.5kHz

BPF

PEAK

HOLD

B

AIN

8

56KΩ

L+R

I/O

11

RES

G-EQ

0.1µF

R

VCC

9

A

I/O

10

DEC

+5V

Fig.1

4/16

zApplication example (BA3835F)

Digital system GND

GND

18

BIASIC

1

0. 1µF

BIAS

VREF

2

AOUT

17

0. 1µF

TEST

16

RREF

3

100KΩ

REFERENCE CURRENT

68Hz

BPF

PEAK

HOLD

N.C

4

N.C

15

RES

170Hz

BPF

PEAK

HOLD

DIFOUT

5

SEL

14

GND

RES

A_C

I/O(A/D)

PEAK

HOLD

420Hz

BPF

RES

N.C

6

N.C

13

1kH

BPF

PEAK

HOLD

MPX

I/O

Display

µ-COM

RES

CIN

7

C

2.4kH

BPF

PEAK

HOLD

Audio system

GND

C

A

I/O

DIF

12

RES

0.1µF

L

10KΩ

5.9kHz

BPF

PEAK

HOLD

B

AIN

8

56KΩ

L+R

I/O

11

RES

G-EQ

14.4kHz

BPF

PEAK

HOLD

0.1µF

R

VCC

9

A

RES

I/O

10

DEC

+5V

Fig.1

5/16

zApplication example（BA3830F）

Fig.3

6/16

zElectrical characteristics curves

Fig.4 BPF frequency

characteristics

Fig.5 Input level vs. output level

Fig.6 Output vs. frequency

（BA3835F）

（BA3830F）

（BA3835F）

Fig.7 Input vs. output level

Fig.8 Input vs. output level

（BA3830F REC mode）

Fig.9 BPF frequency

characteristics

（BA3830F）

（BA3834F）

Fig.10 Input level vs.

output level

（BA3834F）

7/16

z Terminal explanation（BA3834F,BA3835F）

Terminal

Terminal No.

Terminal Explanation

I/O Circuit Diagram

name

10

11

A

B

ＶＣＣ

Output selection control terminal

１０

１１

１２

12

14

C

(Refer to the output selection logic table)

１３

１６

SEL

ＶＲＥＦ

ＧＮＤ

Test signal input terminal must be

connect to GND.

16

TEST

N.C.

4, 6

Terminal not used

13, 15

ＶＣＣ

Differential amplifier output terminal

Open for proper use

６

5

DIFOUT

ＢＰＦ

ＧＮＤ

ＶＣＣ

Differential amplifier input terminal2

Connect capacitor to GND for audio

signals.

7

8

CIN

AIN

７

８

Differential amplifier input terminal1

Input audio signal through coupling

capacitor.

ＢＩＡＳ

ＧＮＤ

ＶＣＣ

Multiplex output terminal

Select one band out of 5 or 7 bands.

Peak hold voltage is output. After

selection, reset pulse will cause it to

attenuate to -3dB level

１７

17

AOUT

ＢＩＡＳ

ＧＮＤ

8/16

Terminal

name

Terminal No.

Terminal Explanation

I/O Circuit Diagram

ＶＣＣ

Setting of band pass filter

Connect external adjustments.

Reference resister to terminal (for band

shift only).

３

3

RREF

ＢＩＡＳ

ＧＮＤ

For logic voltage

９

2

1

VREFC

BIASC

Decoupling capacitor connection

terminal

１

２

For analog voltage

１８

Decoupling capacitor connection

terminal

9

VCC

GND

Power supply terminal

Grounding terminal

18

9/16

zOutput select logic table（BA3835F）

SEL

A

×

0

B

×

0

C

×

0

AOUT

GND

0

1

GND

1

0

1

105Hz

340Hz

GND

1

0

1

0

1

0

1

0

1kHz

1

0

1

GND

1

0

3.4kHz

10.5kHz

1

×:Don't Care。

zTiming chart（BA3835F）

Fig.11

10/16

zOutput select logic table（BA3834F）

SEL

0

A

×

0

B

×

0

C

×

0

AOUT

GND

1

GND

1

0

1

68Hz

1

0

1

0

170Hz

420Hz

1kHz

1

0

1

0

1

0

1

2.4kHz

5.9kHz

14.4kHz

1

0

1

×:Don't Care。

zTiming chart（BA3834F）

Fig.12

zCautions on use（BA3835F）

(1) Numbers and data in entries

Numbers and data in entries are representative design values and are not guaranteed values of the items.

(2) Example application circuit

Although ROHM is confident that the example application circuit reflects the best possible recommendations, be sure to

verify circuit characteristics for your particular application. Modification of constants for other externally connected circuits

may cause variations in both static and transient characteristics for external components as well as this Rohm IC. Allow for

sufficient margins when determining circuit constants.

(3) Absolute maximum ratings

Use of the IC in excess of absolute maximum ratings, such as the applied voltage or operating temperature range (Topr),

may result in IC damage. Assumptions should not be made regarding the state of the IC (short mode or open mode) when

such damage is suffered. A physical safety measure, such as a fuse, should be implemented when using the IC at times

where the absolute maximum ratings may be exceeded.

(4) GND potential

Ensure a minimum GND pin potential in all operating conditions. Make sure that no pins are at a voltage below the GND at

any time, regardless of whether it is a transient signal or not.

11/16

(5) Thermal design

Perform thermal design, in which there are adequate margins, by taking into account the power dissipation (Pd) in actual

states of use.

(6) Short circuit between terminals and erroneous mounting

Pay attention to the assembly direction of the ICs. Wrong mounting direction or shorts between terminals, GND, or other

components on the circuits, can damage the IC.

(7) Operation in strong electromagnetic field

Using the ICs in a strong electromagnetic field can cause operation malfunction.

(8) Frequency characteristics

(11) Recommended operating ranges

The frequency characteristics of this IC are determined by the

resistor connected between the R_REFterminal and GND. For

the specification conditions, the value of this resistor is 100kΩ.

If it is necessary to set the frequency characteristics

accurately, use a variable resistor

Provided that the IC is operated within the recommended

operating conditions and the recommended temperature

range, the basic circuit functions are guaranteed. Within

these ranges, ratings for electrical characteristics for

conditions other than those spec cannot be guaranteed, but

the basic function of the band pass filter will be maintained.

Note: all bands will shift together.

(9) Load characteristics

(12) Output offset voltage

To convert the bias sense output signal to the GND sense

signal, the IC performs a V / I conversion, and then an I /V

conversion using a 10kΩ resistor (Typ.) for the output. The

AOUT can drive a CMOS load. (e.g. Microprocessor input

port) but if it is connected to a circuit with low input impedance,

it may cause the output level to drop.

The relationship between the output offset voltage and the

output selection cycle (cycle time) for this IC is shown in

Fig.14. The maximum output offset voltage of 150mV that is

given in the electrical characteristics table is under the

condition that Ts = 200ms.

When Ts is greater than 50ms, the graph of the output offset

voltage is a straight line at 150mV. When Ts is below 50ms,

can be sensitive to transient characteristics of the peak hold

circuit, the shorter the cycle, the larger the output offset

voltage is. Furthermore, the output offset voltage may shift

due to soldering or other temperature stresses. Therefore,

when setting the spectral analyzer light level, take into

consideration the points given above and make sure that the

spectral analyzer light does not light up during quiescent

periods. Use the chart below as a guide and, if necessary,

leave an even a larger margin.

(10) External resistor for the control pin

When using a common port for the output select control and

FL drive, you must add a diode and resistor as shown in Fig.

13 to prevent the FL drive “L” voltage from damaging the IC.

BA3835F

Fig.13

In this case, the “L” voltage applied to the internal comparator

input terminal V₁is given by:

R1 +R

V1 =

× Vref

R1+R2+R

To maintain a noise margin of at least 2.5V with respect to the

comparator threshold level V^REF, the representative values for

VREF, R

1

and R are 1.5V, 20kΩ, and 10kΩ respectively. This

2

gives:

20kΩ+R

× 1.5V+0.25V ＜ 1.5V

20kΩ+20kΩ+R

And from this, the following condition is obtained:

R＜30kΩ

In this case, the “L” level voltage V for the IC will be:

2

V₂＜0.75V

Fig. 14

12/16

zCautions on use (BA3834F)

(1) Numbers and data in entries

Numbers and data in entries are representative design values and are not guaranteed values of the items.

(2) Example application circuit

Although ROHM is confident that the example application circuit reflects the best possible recommendations, be sure to verify

circuit characteristics for your particular application. Modification of constants for other externally connected circuits may cause

variations in both static and transient characteristics for external components as well as this Rohm IC. Allow for sufficient margins

when determining circuit constants.

(3) Absolute maximum ratings

Use of the IC in excess of absolute maximum ratings, such as the applied voltage or operating temperature range (Topr), may

result in IC damage. Assumptions should not be made regarding the state of the IC (short mode or open mode) when such

damage is suffered. A physical safety measure, such as a fuse, should be implemented when using the IC at times where the

absolute maximum ratings may be exceeded.

(4) GND potential

Ensure a minimum GND pin potential in all operating conditions. Make sure that no pins are at a voltage below the GND at any

time, regardless of whether it is a transient signal or not.

(5) Thermal design

Perform thermal design, in which there are adequate margins, by taking into account the power dissipation (Pd) in actual states of

use.

(6) Short circuit between terminals and erroneous mounting

Pay attention to the assembly direction of the ICs. Wrong mounting direction or shorts between terminals, GND, or other components

on the circuits, can damage the IC.

(7) Operation in strong electromagnetic field

Using the ICs in a strong electromagnetic field can cause operation malfunction.

(8) Frequency characteristics

(11) Recommended operating ranges

The frequency characteristics of this IC are determined by the

resistor connected between the R_REFterminal and GND. For

the specification conditions, the value of this resistor is 100kΩ.

If it is necessary to set the frequency characteristics

accurately, use a variable resistor

Provided that the IC is operated within the recommended

operating conditions and the recommended temperature

range, the basic circuit functions are guaranteed. Within

these ranges, ratings for electrical characteristics for

conditions other than those spec cannot be guaranteed, but

the basic function of the band pass filter will be maintained.

(12) Output offset voltage

Note: all bands will shift together.

(9) Load characteristics

To convert the bias sense output signal to the GND sense

signal, the IC performs a V / I conversion, and then an I /V

conversion using a 10kΩ resistor (Typ.) for the output. The

AOUT can drive a CMOS load. (e.g. Microprocessor input

port) but if it is connected to a circuit with low input impedance,

it may cause the output level to drop.

The relationship between the output offset voltage and the

output selection cycle (cycle time) for this IC is shown in

Fig.16. The maximum output offset voltage of 150mV that is

given in the electrical characteristics table is under the

condition that Ts = 200ms.

When Ts is greater than 50ms, the graph of the output offset

voltage is a straight line at 150mV. When Ts is below 50ms,

can be sensitive to transient characteristics of the peak hold

circuit, the shorter the cycle, the larger the output offset

voltage is. Furthermore, the output offset voltage may shift

due to soldering or other temperature stresses. Therefore,

when setting the spectral analyzer light level, take into

consideration the points given above and make sure that the

spectral analyzer light does not light up during quiescent

periods. Use the chart below as a guide and, if necessary,

leave an even a larger margin.

(10) External resistor for the control pin

When using a common port for the output select control and

FL drive, you must add a diode and resistor as shown in Fig.

15 to prevent the FL drive “L” voltage from damaging the IC.

BA3834F

Fig. 15

In this case, the “L” voltage applied to the internal comparator

input terminal V

1

is given by:

R1 +R

R1+R2+R

V1 =

× VREF

To maintain a noise margin of at least 2.5V with respect to the

comparator threshold level V^ref, the representative values for

V

ref, R

1

and R

2

are 1.5V, 20kΩ, and 10kΩ respectively. This

20kΩ+R

20kΩ+20kΩ+R

gives :

× 1.5V+0.25V ＜ 1.5V

And from this, the following condition is obtained :R < 30kΩ

In this case, the “L” level voltage V2 for the IC will be :

V2 < 0.75V

Fig.16

13/16

zCircuit operation (BA3830F)

(1) LINE and REC input circuits

The LINE and REC input circuits are configured as differential

amplifiers, and the gain can be set to any required value

using an external resistor. The input impedance is determined

by the external resistor.

(2) Bias circuit

A bias voltage of VCC /2 is applied to each of the circuits.

Since the output stage uses a push-pull configuration, a

stable bias source can be obtained.

Fig.17

Fig.19

(3) BPF circuit

This is a circuit that selects the required frequency

component from the input signal and amplifies it. With this

configuration, no external capacitor is needed. In addition, the

center frequency is set based on the current, so f01 and f02

to f06 can be set individually, using separate external

resistors (pins1 and 2). Q is set to 4.5V (Typ.).

Fig.18

Fig.20

14/16

(4) DET circuit

This circuit carries out phase detection on the signal selected

and amplified by the BPF, and holds it at the peak

level. It is configured so that all of the capacitors are internal.

The charge that was charged by the internal capacitors

in the DET circuit is set to be discharged at 75ms/V

(Typ.), but in order to eliminate any effects of disparity, a

reset circuit is also included.

(5) Output section circuit

The signal level held at peak level by the DET undergoes

V/ I conversion and is output. Since the next stage supports

MOS (high-input impedance), there is a resistance

of 33.9kW (44.3kW for REC output only) between the output

pin and the GND in the IC, so the output value

changes based on the input impedance.

Fig.21

Fig.22

15/16

zOrder model name selection

B

A

3

8

3

5

F

-

E

2

Packing & Foaming

品名

Product Name

BA3835F

包装・フォーミング仕様

Specification

BA3830F

BA3834F

SOP18

Tape

Embossed carrier tape

Quantity

2000pcs

11.2 0.2

E2

Direction

of feed

18

10

9

(Correct direction: 1pin of product should be at the upper left when you

hold reel on the left hand, and you pull out the tape on the right hand)

1

0.15 0.1

0.1

1.27

0.4 0.1

1Pin

Direction of feed

Reel

(Unit:mm)

※Orders are available in complete units only.

The contents described herein are correct as of October, 2005

The contents described herein are subject to change without notice. For updates of the latest information, please contact and confirm with ROHM CO.,LTD.

Any part of this application note must not be duplicated or copied without our permission.

Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding

upon circuit constants in the set.

Any data, including, but not limited to application circuit diagrams and information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any

warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such

infringement, or arising from or connected with or related to the use of such devices.

Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, implied right or license to practice or commercially exploit any intellectual property rights or other

proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer.

The products described herein utilize silicon as the main material.

The products described herein are not designed to be X ray proof.

Published by

Catalog NO.05T412Be '05.10 ROHM C 2000 TSU

Application Engineering Group

Appendix

Notes

No technical content pages of this document may be reproduced in any form or transmitted by any

means without prior permission of ROHM CO.,LTD.

The contents described herein are subject to change without notice. The specifications for the

product described in this document are for reference only. Upon actual use, therefore, please request

that specifications to be separately delivered.

Application circuit diagrams and circuit constants contained herein are shown as examples of standard

use and operation. Please pay careful attention to the peripheral conditions when designing circuits

and deciding upon circuit constants in the set.

Any data, including, but not limited to application circuit diagrams information, described herein

are intended only as illustrations of such devices and not as the specifications for such devices. ROHM

CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any

third party's intellectual property rights or other proprietary rights, and further, assumes no liability of

whatsoever nature in the event of any such infringement, or arising from or connected with or related

to the use of such devices.

Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or

otherwise dispose of the same, no express or implied right or license to practice or commercially

exploit any intellectual property rights or other proprietary rights owned or controlled by

ROHM CO., LTD. is granted to any such buyer.

Products listed in this document are no antiradiation design.

The products listed in this document are designed to be used with ordinary electronic equipment or devices

(such as audio visual equipment, office-automation equipment, communications devices, electrical

appliances and electronic toys).

Should you intend to use these products with equipment or devices which require an extremely high level

of reliability and the malfunction of which would directly endanger human life (such as medical

instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers

and other safety devices), please be sure to consult with our sales representative in advance.

It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance

of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow

for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in

order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM

cannot be held responsible for any damages arising from the use of the products under conditions out of the

range of the specifications or due to non-compliance with the NOTES specified in this catalog.

Thank you for your accessing to ROHM product informations.

More detail product informations and catalogs are available, please contact your nearest sales office.

THE AMERICAS / EUROPE / ASIA / JAPAN

ROHM Customer Support System

Contact us : webmaster@ rohm.co.jp

www.rohm.com

TEL : +81-75-311-2121

FAX : +81-75-315-0172

21 Saiin Mizosaki-cho, Ukyo-ku, Kyoto 615-8585, Japan

Appendix1-Rev2.0


型号：	BA3834FE2
厂家：	ROHM
描述：	Continuous Time Filter, 1 Func, Resistor Programmable, Bandpass, BIPOLAR, PDSO18, LEAD FREE, SOP-18 LTE 光电二极管有源滤波器
文件：	总17页 (文件大小：812K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

BA3834FE2 [ROHM]

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