- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98180 > TC811CPL 1-CH 3-BIT DUAL-SLOPE ADC, PDIP40 PDF資料下載
參數(shù)資料
| 型號(hào)： | TC811CPL |
| 元件分類： | ADC |
| 英文描述： | 1-CH 3-BIT DUAL-SLOPE ADC, PDIP40 |
| 封裝： | PLASTIC, DIP-40 |
| 文件頁數(shù)： | 7/14頁 |
| 文件大?。?/td> | 120K |
| 代理商： | TC811CPL |
2
TC811
2001 Microchip Technology Inc.
DS21472A
3-1/2 Digit Analog-To-Digital Converter with
Hold and Differential Reference Inputs
TC811-7 11/5/96
GENERAL DESCRIPTION
The TC811 is a low power, 3-1/2 digit, LCD display
analog-to-digital converter. This device incorporates both a
display hold feature and differential reference inputs. A
crystal oscillator, which only requires two pins, permits
added features while retaining a 40-pin package. An addi-
tional feature is an "Integrator Output Zero" phase which
guarantees rapid input overrange recovery.
The TC811 display hold (HLDR) function can be used to
"freeze" the LCD display. The displayed reading will remain
indefinitely as long as HLDR is held high. Conversions
continue but the output data display latches are not updated.
The TC811 also includes a differential reference for easy
ratiometric measurements. Circuits which use the
7106/26/36 can easily be upgraded to include the hold
function with the TC811.
The TC811 has an improved internal zener reference
voltage circuit which maintains the Analog Common tem-
perature drift to 35ppm/
°C (typical) and 75ppm/°C (maxi-
mum). This represents an improvement of two to four times
over similar 3-1/2 digit converters, eliminating the need for
a costly, space consuming external reference source.
The TC811 limits linearity error to less than one count on
both the 200mV and the 2.00V full-scale ranges. Rollover
error—the difference in readings for equal magnitude but
opposite polarity input signals—is below
±1 count. High
impedance differential inputs offer 1pA leakage currents
and a 1012
input impedance. The 15Vp-p noise perfor-
mance guarantees a “rock solid” reading. The Auto Zero
cycle guarantees a zero display readout for a zero volt input.
The single chip CMOS TC811 incorporates all the active
devices for a 3-1/2 digit analog to digital converter to directly
drive an LCD display. On-board oscillator, precision voltage
reference and display segment and backplane drivers sim-
plify system integration, reduce board space requirements
and lower total cost. A low cost, high resolution (0.05%)
indicating meter requires only a TC811, an LCD display, five
resistors, six capacitors, a crystal, and a 9V battery. Com-
pact, hand held multimeter designs benefit from the Micro-
chip Semiconductor small footprint package option.
The TC811 uses a dual slope conversion technique
which will reject interference signals if the converters inte-
gration time is set to a multiple of the interference signal
period. This is especially useful in industrial measurement
environments where 50, 60 and 400Hz line frequency sig-
nals are present.
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage (V+ to V–) ............................................ 15V
Analog Input voltage (Either Input)1 ..................... V+ to V–
Reference Input Voltage ...................................... V+ to V–
Clock Input ...................................................... TEST to V+
Power Dissipation2 (TA ≤ 70°C)
44-Pin Flat Package ......................................... 1.00W
40-Pin Plastic DIP ............................................. 1.23W
Operating Temperature Range
Commercial Package (C) ...................... 0
°C to +70°C
Industrial Package (I) ........................ – 25
°C to +85°C
Storage Temperature Range ................ – 65
°C to +150°C
Lead Temperature (Soldering, 10 sec) ................. +300
°C
*Static-sensitive device. Unused devices must be stored in conductive
material. Protect devices from static discharge and static fields. Stresses
above those listed under "Absolute Maximum Ratings" may cause perma-
nent damage to the device. These are stress ratings only and functional
operation of the device at these or any other conditions above those
indicated in the operation sections of the specifications is not implied.
Exposure to absolute maximum rating conditions for extended periods may
affect device reliability.
ELECTRICAL CHARACTERISTICS: VSupply = 9V, fCLOCK = 32.768kHz, and TA = 25°C, unless otherwise noted.
Symbol
Parameter
Test Conditions
Min
Typ
Max
Unit
Input
—
Zero Input Reading
VIN = 0V
– 000.0
±000.0
+000.0
Digital
VFS = 200mV
Reading
—
Zero Reading Drift
VIN = 0V, 0°C ≤ TA ≤ 70°C
—
0.2
1
V/°C
—
Ratiometric Reading
VIN = VREF, VREF = 100mV
999
999/1000
1000
Digital
Reading
NL
Linearity Error
VFS = 200mV or 2.000V
– 1
±0.2
+1
Counts
ER
Roll Over Error
VIN– = VIN+ ≈ 200mV
– 1
±0.2
+1
Counts
eN
Noise
VIN = 0V, VFS = 200mV
—
15
—
VP-P
IL
Input Leakage Current
VIN = 0V
—
1
10
pA
CMRR
Common-Mode Rejection
VCM = ±1V, VIN = 0V,
—
50
—
V/V
VFS = 200mV
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TC811CKW | 1-CH 3-BIT DUAL-SLOPE ADC, PQFP44 |
| TC811CPL | 1-CH DUAL-SLOPE ADC, ACCESS, PDIP40 |
| TC811CKW | 1-CH DUAL-SLOPE ADC, ACCESS, PQFP44 |
| TC8129CKW | 1-CH PROPRIETARY METHOD ADC, PQFP44 |
| TC815CBU | 1-CH DUAL-SLOPE ADC, ACCESS, PQFP64 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TC8-11-PFH | 功能描述:接線端子工具和配件 TC8-11-PFH=COVER w/HOLES RoHS:否 制造商:Phoenix Contact 產(chǎn)品:Tools & Accessories 類型:End Bracket |
| TC-811-SC | 制造商:Thomas & Betts 功能描述:Cable Accessories Thin Wall Conduit Fitting Zinc Die Cast |
| TC811-SC-1 | 制造商:Thomas & Betts 功能描述:EMT COMPRESSION CONN.INS.1/2 1 PC |
| TC811-SC-10 | 制造商:Thomas & Betts 功能描述:Fittings Connector 0.5inch Insulated |
| TC812-0 | 制造商:Thomas & Betts 功能描述:CABLETIE .4X.8 MINTRSCREW MT-#10BLK |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。