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TLC0820AI Datasheet Preview

TLC0820AI Datasheet

HIGH-SPEED 8-BIT ANALOG-TO-DIGITAL CONVERTERS USING MODIFIED FLASH TECHNIQUE

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TLC0820AC, TLC0820AI
Advanced LinCMOSHIGH-SPEED 8-BIT ANALOG-TO-DIGITAL
CONVERTERS USING MODIFIED FLASH TECHNIQUES
SLAS064A – SEPTEMBER 1986 – REVISED JUNE 1994
D Advanced LinCMOSSilicon-Gate
Technology
D 8-Bit Resolution
D Differential Reference Inputs
D Parallel Microprocessor Interface
D Conversion and Access Time Over
Temperature Range
Read Mode . . . 2.5 µs Max
D No External Clock or Oscillator
Components Required
D On-Chip Track and Hold
D Single 5-V Supply
D TLC0820A Is Direct Replacement for
National Semiconductor ADC0820C/CC and
Analog Devices AD7820K/B/T
DB, DW, OR N PACKAGE
(TOP VIEW)
ANLG IN 1
(LSB) D0 2
D1 3
D2 4
D3 5
WR/RDY 6
MODE 7
RD 8
INT 9
GND 10
20 VCC
19 NC
18 OFLW
17 D7 (MSB)
16 D6
15 D5
14 D4
13 CS
12 REF +
11 REF –
FN PACKAGE
(TOP VIEW)
description
The TLC0820AC and the TLC0820AI are
Advanced LinCMOS8-bit analog-to-digital
converters each consisting of two 4-bit flash
converters, a 4-bit digital-to-analog converter, a
summing (error) amplifier, control logic, and a
result latch circuit. The modified flash technique
allows low-power integrated circuitry to complete
D2
D3
WR/RDY
MODE
3 2 1 20 19
4
18
5
17
6
16
7
15
OFLW
D7 (MSB)
D6
D5
an 8-bit conversion in 1.18 µs over temperature.
The on-chip track-and-hold circuit has a 100-ns
RD 8
14 D4
9 10 11 12 13
sample window and allows these devices to
convert continuous analog signals having slew
rates of up to 100 mV/µs without external
sampling components. TTL-compatible 3-state
NC – No internal connection
output drivers and two modes of operation allow
interfacing to a variety of microprocessors. Detailed information on interfacing to most popular microprocessors
is readily available from the factory.
TA
0°C to 70°C
– 40°C to 85°C
TOTAL
UNADJUSTED
ERROR
± 1 LSB
± 1 LSB
AVAILABLE OPTIONS
PACKAGE
SSOP
(DB)
PLASTIC
SMALL OUTLINE
(DW)
PLASTIC
CHIP CARRIER
(FN)
TLC0820ACDB TLC0820ACDW
TLC0820ACFN
TLC0820AIDW
TLC0820AIFN
PLASTIC DIP
(N)
TLC0820ACN
TLC0820AIN
Advanced LinCMOS is a trademark of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1994, Texas Instruments Incorporated
2–1




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TLC0820AI Datasheet Preview

TLC0820AI Datasheet

HIGH-SPEED 8-BIT ANALOG-TO-DIGITAL CONVERTERS USING MODIFIED FLASH TECHNIQUE

No Preview Available !

TLC0820AC, TLC0820AI
Advanced LinCMOSHIGH-SPEED 8-BIT ANALOG-TO-DIGITAL
CONVERTERS USING MODIFIED FLASH TECHNIQUES
SLAS064A – SEPTEMBER 1986 – REVISED JUNE 1994
functional block diagram
12
REF+
11
REF –
4-Bit Flash
Analog-to-Digital 4 4
Converter
(4 MSBs)
4
4-Bit
Digital-to-Analog
Converter
Output
Latch
and
3-State
Buffers
1
ANLG IN
Summing
Amplifier
–1
+1
4-Bit Flash
Analog-to-Digital
4
Converter
(4 LSBs)
18
OFLW
2
D0 (LSB)
3
D1
4
D2
5
D3
14
D4
15
D5
16
D6
17
D7 (MSB)
Digital
Outputs
7
MODE
6
WR/RDY
13
CS
8
RD
Timing
and
Control
9
INT
2–2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number TLC0820AI
Description HIGH-SPEED 8-BIT ANALOG-TO-DIGITAL CONVERTERS USING MODIFIED FLASH TECHNIQUE
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