HT8950 Holtek, HT8950 Datasheet

no-image

HT8950

Manufacturer Part Number
HT8950
Description
Manufacturer
Holtek
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HT8950
Manufacturer:
A/D ACONVERTER
Quantity:
101
Features
·
·
·
·
·
·
Applications
·
·
·
General Description
The HT8950/HT8950A are single chip CMOS LSI voice
modulator ICs which provide seven steps to shift the fre-
quency of an input voice, producing a dramatic change
in the output.
The HT8950/HT8950A provide two special effects: Vi-
brato and Robot. The Vibrato effect is generated by al-
ternating the frequency of an input signal up and down
at a rate of 8Hz. The Robot function, on the other hand,
converts an input voice into a Robot voice. Both effects
can be selected depending on which pin is triggered, ei-
ther ROB or VIB. For the output frequency level shifting,
the chips provide seven steps which can be selected
Pin Assignment
Rev. 1.10
Operating voltage: 2.4V~4.0V
On-chip SRAM
Robot function
Vibrato function
8kHz sampling rate
7-step level shifting
Educational Toys/leisure products
Mixers
Recorders
1
·
·
·
·
·
·
·
·
from the two groups of pins namely, SW0, SW1 and
SW2 for electronic direct selection and ROB, TGD, TGU
and VIB for push button selection.
The HT8950/HT8950A include a built-in microphone
amplifier with an internal bias, an 8-bit A/D converter, a
built-in SRAM as well as a current output type 8-bit D/A
converter. The 8-bit A/D and D/A converters with a sam-
pling rate of 8kHz ensures a high quality and high S/N
ratio output voice. The chips provide an LED indicator
which flashes in accordance with the volume of the input
voices.
8-bit A/D and D/A converters
LED indicator with voice level
Push button selection or electronic mode
Minimal external components
HT8950: 18-pin DIP package
HT8950A: 16-pin DIP package
Audio system
Speech system
Telephone system
HT8950/HT8950A
Voice Modulator
November 16, 2006

Related parts for HT8950

HT8950 Summary of contents

Page 1

... Mixers · Recorders General Description The HT8950/HT8950A are single chip CMOS LSI voice modulator ICs which provide seven steps to shift the fre- quency of an input voice, producing a dramatic change in the output. The HT8950/HT8950A provide two special effects: Vi- brato and Robot. The Vibrato effect is generated by al- ternating the frequency of an input signal up and down at a rate of 8Hz ...

Page 2

... Block Diagram Pad Coordinates Chip size: 2350 2080 ( m) The IC substrate should be connected to VSS in the PCB layout artwork. Pin Description (HT8950) Internal Pin No. Pin Name I/O Connection 1~3 SW0~SW2 I Pull-High 4 VSS AIN I 7 VDD O NMOS 8 LAMP O Open Drain Rev. 1.10 Pad X Y No. ...

Page 3

... Storage Temperature ............................ 125 C SS +0.3V Operating Temperature........................... Test Conditions Min. V Conditions DD 2.4 No load, f =640kHz 3V OSC 3V V =1. Open loop 3V During silence 0. =47k OSC 3 HT8950/HT8950A Ta=25 C Typ. Max. Unit 3.0 4 580 mV 9.5 mA 2000 0. 512 kHz November 16, 2006 ...

Page 4

... A voice output is accompanied with a vibrato effect af- ter the VIB pin is triggered, regardless of what state the system is in. LED Indicator The HT8950/HT8950A provide a LAMP pin to drive an external LED. The brightness of the LED changes with the volume of the input voice signal. 4 November 16, 2006 ...

Page 5

... Application Circuits HT8950 with HT82V733 Power Amplifier and a 6V Power Supply HT8950A with HT82V733 Power Amplifier and a 6V Power Supply Rev. 1.10 HT8950/HT8950A 5 November 16, 2006 ...

Page 6

... HT8950 with a Transistor Output Stage and a 6V Power Supply HT8950A with a Transistor Output Stage and a 6V Power Supply Rev. 1.10 HT8950/HT8950A 6 November 16, 2006 ...

Page 7

... HT8950 with HT82V733 Power Amplifier and a 6V Power Supply HT8950A with HT82V733 Power Amplifier and a 6V Power Supply Rev. 1.10 HT8950/HT8950A 7 November 16, 2006 ...

Page 8

... Package Information 16-pin DIP (300mil) Outline Dimensions Symbol Rev. 1.10 Dimensions in mil Min. Nom. 745 240 125 125 16 50 100 295 335 0 8 HT8950/HT8950A Max. 775 260 135 145 20 70 315 375 15 November 16, 2006 ...

Page 9

... DIP (300mil) Outline Dimensions Symbol Rev. 1.10 Dimensions in mil Min. Nom. 895 240 125 125 16 50 100 295 335 0 9 HT8950/HT8950A Max. 915 260 135 145 20 70 315 375 15 November 16, 2006 ...

Page 10

... Holtek s products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. Rev. 1.10 HT8950/HT8950A 10 November 16, 2006 ...

Related keywords