Motor de Búsqueda de Datasheet de Componentes Electrónicos
  Spanish  ▼
ALLDATASHEET.ES

X  

TC7129CPL Datasheet(PDF) 9 Page - Microchip Technology

No. de pieza TC7129CPL
Descripción Electrónicos  4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers
Download  24 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrónico  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC7129CPL Datasheet(HTML) 9 Page - Microchip Technology

Back Button TC7129CPL Datasheet HTML 5Page - Microchip Technology TC7129CPL Datasheet HTML 6Page - Microchip Technology TC7129CPL Datasheet HTML 7Page - Microchip Technology TC7129CPL Datasheet HTML 8Page - Microchip Technology TC7129CPL Datasheet HTML 9Page - Microchip Technology TC7129CPL Datasheet HTML 10Page - Microchip Technology TC7129CPL Datasheet HTML 11Page - Microchip Technology TC7129CPL Datasheet HTML 12Page - Microchip Technology TC7129CPL Datasheet HTML 13Page - Microchip Technology Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 24 page
background image
© 2002 Microchip Technology Inc.
DS21459B-page 9
TC7129
3.5
Voltage Reference
(DREF,RREF,RBIAS,CRF)
The reference potentiometer (RREF)provides an
adjustment for adjusting the reference voltage; any
value above 20k
Ω is adequate. The bias resistor
(RBIAS) limits the current through DREF to less than
150
µA. The reference filter capacitor (CRF)forms an
RC filter with RBIAS to help eliminate noise.
3.6
Input Filter (RIF,CIF)
For added stability, an RC input noise filter is usually
included in the circuit. The input filter resistor value
should not exceed 100k
Ω. A typical RC time constant
value is 16.7msec to help reject line frequency noise.
The input filter capacitor should have low leakage for a
high-impedance input.
3.7
Battery
The typical circuit uses a 9V battery as a power source.
Any value between 6V and 12V can be used. For oper-
ation from batteries with voltages lower than 6V and for
operation from power supplies, see Section 4.2,
Powering the TC7129.
4.0
TYPICAL APPLICATIONS
4.1
TC7129 as a Replacement Part
The TC7129 is a direct pin-for-pin replacement part for
the ICL7129. Note, however, that part requires a
capacitor and resistor between Pins 26 and 28 for
phase compensation. Since the TC7129 uses internal
phase compensation, these parts are not required and,
in fact, must be removed from the circuit for stable
operation.
4.2
Powering the TC7129
While the most common power source for the TC7129
is a 9V battery, there are other possibilities. Some of
the more common ones are explained below.
4.3
±5V Power Supply
Measurements are made with respect to power supply
ground. DGND (Pin 36) is set internally to about 5V
less than V+ (Pin 24); it is not intended as a power sup-
ply input and must not be tied directly to power supply
ground. It can be used as a reference for external logic,
as explained in Section 4.6, Connecting to External
Logic (see Figure 4-1).
FIGURE 4-1:
POWERING THE TC7129
FROM A ±5V POWER
SUPPLY
4.4
Low Voltage Battery Source
A battery with voltage between 3.8V and 6V can be
used to power the TC7129, when used with a voltage
doubler circuit, as shown in Figure 4-2. The voltage
doubler uses the TC7660 DC-to-DC voltage converter
and two external capacitors.
FIGURE 4-2:
POWERING THE TC7129
FROM A LOW VOLTAGE
BATTERY
V-
V+
REF HI
REF LO
IN HI
COMMON
IN LO
DGND
VIN
+
-5V
0.1
µF
+5V
0.1
µF
24
34
35
28
33
32
23
36
TC7129
0.1
µF
V-
TC7129
V+
REF HI
REF LO
IN HI
COMMON
IN LO
DGND
3.8V
to
6V
+
+
10
µF
+
8
2
4
10
µF
+
3
TC7660
VIN
5
24
34
35
28
33
32
23
36


Número de pieza similar - TC7129CPL

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
TelCom Semiconductor, I...
TC7129CPL TELCOM-TC7129CPL Datasheet
214Kb / 15P
   4-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTER WITH ON-CHIP LCD DRIVERS
logo
Microchip Technology
TC7129CPL MICROCHIP-TC7129CPL Datasheet
562Kb / 28P
   4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers
2006
TC7129CPL MICROCHIP-TC7129CPL Datasheet
452Kb / 28P
   4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers
11/29/12
TC7129CPL713 MICROCHIP-TC7129CPL713 Datasheet
562Kb / 28P
   4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers
2006
More results

Descripción similar - TC7129CPL

Fabricante ElectrónicoNo. de piezaDatasheetDescripción Electrónicos
logo
Microchip Technology
TC7129 MICROCHIP-TC7129_06 Datasheet
562Kb / 28P
   4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers
2006
TC7129 MICROCHIP-TC7129_13 Datasheet
452Kb / 28P
   4-1/2 Digit Analog-to-Digital Converters with On-Chip LCD Drivers
11/29/12
logo
TelCom Semiconductor, I...
TC7129 TELCOM-TC7129 Datasheet
214Kb / 15P
   4-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTER WITH ON-CHIP LCD DRIVERS
logo
Texas Instruments
ICL7135C TI-ICL7135C_08 Datasheet
448Kb / 16P
[Old version datasheet]   4 1/2-DIGIT PRECISION ANALOG-TO-DIGITAL CONVERTERS
logo
Microchip Technology
TC7106 MICROCHIP-TC7106_06 Datasheet
534Kb / 32P
   3-1/2 Digit Analog-to-Digital Converters
2006
TC7126 MICROCHIP-TC7126_06 Datasheet
429Kb / 26P
   3-1/2 Digit Analog-to-Digital Converters
2006
logo
Texas Instruments
ICL7135C TI1-ICL7135C_16 Datasheet
677Kb / 18P
[Old version datasheet]   1/2-DIGIT PRECISION ANALOG-TO-DIGITAL CONVERTERS
logo
Microchip Technology
TC7106 MICROCHIP-TC7106 Datasheet
623Kb / 26P
   3-1/2 Digit Analog-to-Digital Converters
2002
TC7126 MICROCHIP-TC7126 Datasheet
553Kb / 22P
   3-1/2 Digit Analog-to-Digital Converters
2002
logo
TelCom Semiconductor, I...
TC7126 TELCOM-TC7126 Datasheet
198Kb / 13P
   3-1/2 DIGIT ANALOG-TO-DIGITAL CONVERTERS
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24


Datasheet Descarga

Go To PDF Page


Enlace URL




Política de Privacidad
ALLDATASHEET.ES
¿ALLDATASHEET es útil para Ud.?  [ DONATE ] 

Todo acerca de Alldatasheet   |   Publicidad   |   Contáctenos   |   Política de Privacidad   |   Intercambio de Enlaces   |   Lista de Fabricantes
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com