GS3034 [ETC]

GS3034 - Linear Class H CIC Size Hybrid ; GS3034 - 线性H级CIC尺寸混合动力\n


型号：	GS3034
厂家：	ETC
描述：	GS3034 - Linear Class H CIC Size Hybrid GS3034 - 线性H级CIC尺寸混合动力\n 商用集成电路放大器
文件：	总6页 (文件大小：98K)
中文：	中文翻译
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Linear Clas s H

CIC Size Hybrid

GS3 0 3 4 - DATA SHEET

FEATURES

This new breed of output stage adapts the bias current of the

receiver to the user's listening environment. In relatively loud

environments the receiver will be fully biased similar to a

traditional class A amplifier. However, as the loudness of the

environmentdecreases, the bias currentofthe receiveradjusts

to a minimum level required to cleanly pass the signal. At the

same time the system maintains adequate “headroom”should

the amplitude of the signal suddenly increase. By adapting

the bias of the output stage to the requirements of the signal

being processed, significant current savings can be realized

compared to traditional class A amplifiers.

• complete linear system

• current mode class H output stage

• current drive power amp

• low distortion / low noise

• low amplifier current 190 µA typical

• small size for CIC applications

STANDARD PACKAGING

The rate atwhich the bias adapts is associated with a capacitor

connected from pad CC of the hybrid to ground. For optimum

performance it is recommended that a 0.22 µF capacitor be

used.

• Hybrid Typical Dimensions (0.180in x 0.075in x 0.055in)

(4.57mm x 1.91mm x 1.40mm)

• Hybrid View

The two low noise preamplifiers Stage A and Stage B, can be

used as Volume Control and Gain Trim elements or Stage A as

a filtershaping elementand Stage Bas the Volume Control. As

the outputstage is currentdrive, frequencyshaping is relatively

easy via the addition of a capacitor across the receiver.

DESCRIPTION

The GS3034 hybrid offers Gennum’s new innovative class H

output stage along with two low noise inverting preamplifiers,

in a CIC size package.

REGULATOR

REG

CONTROL

0µ1

24k

12k

OUT

- A

- B

0µ1

170

0µ1

15n

GS3034

OUT

OUT RIN

GND

All resistors in ohms, all capacitors

in farads unless otherwise stated.

FUNCTIONAL BLOCK DIAGRAM

Document No. 5 2 1 - 5 1 - 0 4

Revision Date: December 1 9 9 8

GENNUM CORPORATION P.O. Box 4 8 9 , Stn. A, Burlington, Ontario, Canada L7 R 3 Y3 tel. +1 (9 0 5 ) 6 3 2 -2 9 9 6

W eb Site: www.gennum.com E-mail: hipinfo@gennum.com

PAD CONNECTION

ABSOLUTE MAXIMUM RATINGS

PARAMETER

VALUE / UNITS

5 VDC

OUT

GND

REG

Supply Voltage

Power Dissipation

25 mW

Operating Temperature Range

Storage Temperature Range

-10° C to 40° C

-20° C to 70° C

CAUTION

OUT

CLASS 1 ESD SENSITIVITY

ELECTRICAL CHARACTERISTICS

Conditions: Frequency = 5 kHz, Temperature 25 °C, Voltage Supply = 1.3 VDC

PARAMETER

OVERALL

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Amplifier Current

Minimum Operating Voltage

Overall Gain

190

300

1.1

µA

AMP

0.2

Distortion

THD

V = -40 dBV

= R

= 10 kΩ

Input Referred Noise

VOLTAGE REGULATOR

Regulator Voltage

IRN

A Weighted Filter

2.5

µVRMS

= 30 µA

LOAD

870

920

2.9

970

mVDC

REG

Output Noise

A Weighted Filter

µVRMS

STAGE A and STAGE B

Input Bias Current

= R = 1 MΩ

-25

µA

BIAS

DC Voltage Gain

Stage A

Stage B

OL -A

OL -B

Current Source Capabilities

Output Voltage Swing - Low

STAGE C & CONTROL CIRCUIT

Maximum Current Sinking

Output Impedance

SOURCE

200

280

SINK

grounded, V = 1.3 V

OUT

kΩ

SINK

OUT

Minimum Emitter Voltage

Maximum Emitter Voltage

Minimum Transducer Current

Maximum Transducer Current

µA

RE-MIN

400

500

RE-MAX

T-MIN

300

T-MAX

RANGE

Maximum/Minimum Transducer

Current Ratio

Dynamic Headroom

Time Constant

Headroom

Note 1

= 0.22µF

130

All parameters and switches remain as shown in the Test Circuit unless otherwise stated in CONDITIONS column.

Notes:

1. Headroom = 20 Log (V_{RE DC}/ V_REACRMS) [V = -79 dBV]

521 - 51 - 04

This capacitor value is not suitable

for actual Hearing Instrument Designs.

Values other than 0µ22 can result

in significantly increased distortion

1.3V

10n

2.6V

REGULATOR

REG

CONTROL

24k

0µ1

3k9

12k

- A

- B

0µ1

170

0µ1

15n

GS3034

All resistors in ohms, all capacitors

in farads unless otherwise stated.

100k

Fig. 1 ProductionTest Circuit

* Minimum 10 nF

capacitor needed

for correct operation

0µ22

10n

Any Knowles or

Microtronic

Class A receiver

(e.g. EH3052)

REGULATOR

REG

BIAS

CONTROL

24k

0µ1

Any Knowles or

Microtronic

Microphone

(e.g. EM5046

or Model 39)

12k

- A

- B

170 x V

REMAX

170

170 x I

- V

BIAS REMAX

0µ1

15n

GS3034

All resistors in ohms, all capacitors

in farads unless otherwise stated.

100k

Fig. 2 Typical Hearing Instrument Application

521 - 51 - 04

MIC

BATTERY

0µ22

VOLUME

CONTROL

10n

REC

Fig. 3 Typical Assembly Diagram

1.3V

0µ22

2.6V

REGULATOR

REG

CONTROL

24k

0µ1

1.8k

3k9

12k

- A

OUT

- B

0µ1

325

170

0µ1

15n

GS3034

All resistors in ohms, all capacitors

in farads unless otherwise stated.

100k

Fig. 4 Characterization Circuit

521 - 51 - 04

R_VC=100k

R_VC=33k

_IN=-60dBV

-10

-20

-30

-40

-50

-60

-70

-80

R_VC=10k

R_VC=3k3

R_VC=100k

R_VC=33k

R_VC=10k

R_VC=3k3

R_VC=1k

100

10k 20k

-120

-100

-80

-60

-40

-20

-0

FREQUENCY (Hz)

INPUT LEVEL (dBV)

Fig. 5 Input vs Output

Fig. 6 Gain vs Frequency

ƒ = 3kHz

R_VC=100k

R_VC=33k

R_VC=10k

R_VC=33k

R_VC=10k

R_VC=3k3

R_VC=1k

100

-120

-100

-80

-60

-40

-20

-90 -85 -80 -75 -70 -65 -60 -55 -50 -45 -40 -35 -30 -25 -20

INPUT (dBV)

Fig. 8 Distortion vs Input

Fig. 7 Transducer Current vs Input

Stage A

Stage B

10µ

V_O

2k2

100

10k

100k

FREQUENCY (Hz)

Fig. 9 Stage A and Stage B Open Loop Gain

521 - 51 - 04

XXXXXX

0.180

(4.57)

Max 0.064

(1.63)

OUT

GND

REG

0.075

(1.91)

OUT

Dimension units are in inches.

Dimensions in parenthesis are in millimetres converted from inches and include minor rounding errors.

1.0000 inches = 25.400 mm.

Pad sizes 0.021 x 0.029 (0.53 x 0.74).

Dimension tolerances: ±0.003 (+0.08) unless otherwise stated.

Pad numbers for illustration only.

XXXXXX - work order number.

This hybrid is designed to be reflowable for Gennum's reflow process profile.

For more information contact Gennum Corporation.

Fig. 10 Hybrid Layout & Dimensions

GENNUM CORPORATION

MAILING ADDRESS:

DOCUMENT IDENTIFICATION: DATA SHEET

The product is in production. Gennum reserves the right to make

changes at any time to improve reliability, function or design, in

order to provide the best product possible.

P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3

Tel. +1 (905) 632-2996 Fax +1 (905) 632-2814

SHIPPING ADDRESS:

970 Fraser Drive, Burlington, Ontario, Canada L7L 5P5

REVISION NOTES:

GENNUM JAPAN CORPORATION

C-101, Miyamae Village, 2-10-42 Miyamae, Suginami-ku, Tokyo 168-0081,

Correction to Typical Assembly Diagram.

Japan

Tel. +81 (3) 3334-7700 Fax: +81 (3) 3247-8839

Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement.

Printed in Canada.

521 - 51 - 04

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