LTC1096IS8 Linear Technology, LTC1096IS8 Datasheet

IC A/D CONV 8BIT SRL IN/OUT8SOIC

LTC1096IS8

Manufacturer Part Number
LTC1096IS8
Description
IC A/D CONV 8BIT SRL IN/OUT8SOIC
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1096IS8

Number Of Bits
8
Sampling Rate (per Second)
33k
Data Interface
Serial
Number Of Converters
1
Power Dissipation (max)
600µW
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTC1096IS8
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LTC1096IS8#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LTC1096IS8#TRPBF
Manufacturer:
LINEAR
Quantity:
8 902
APPLICATIONS
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
FEATURES
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
80μA Maximum Supply Current
1nA Typical Supply Current in Shutdown
5V Operation (LTC1096/LTC1098)
3V Operation (LTC1096L/LTC1098L)(2.65V Min)
Sample-and-Hold
16μs Conversion Time
33kHz Sample Rate
±0.5LSB Total Unadjusted Error Over Temp
Direct 3-Wire Interface to Most MPU Serial Ports and
All MPU Parallel I/O Ports
8-Pin SO Plastic Package
Battery-Operated Systems
Remote Data Acquisition
Battery Monitoring
Battery Gas Gauges
Temperature Measurement
Isolated Data Acquisition
0V TO 5V RANGE
ANALOG INPUT
Samples at 200Hz and Runs Off a 5V Battery
10μW, S8 Package, 8-Bit A/D
CS/
SHUTDOWN
+IN
–IN
GND
LTC1096
D
V
CLK
V
OUT
REF
CC
1μF
5V
(e.g., 8051)
P1.4
P1.3
P1.2
MPU
10968 TA01
8-Bit Serial I/O A/D Converters
DESCRIPTION
The LTC
micropower, 8-bit A/D converters that draw only 80μA of
supply current when converting. They automatically power
down to 1nA typical supply current whenever they are not
performing conversions. They are packaged in 8-pin SO
packages and have both 3V (L) and 5V versions. These
8-bit, switched-capacitor, successive approximation ADCs
include sample-and-hold. The LTC1096/LTC1096L have a
single differential analog input. The LTC1098/LTC1098L
offer a software selectable 2-channel MUX.
On-chip serial ports allow effi cient data transfer to a wide
range of microprocessors and microcontrollers over three
wires. This, coupled with micropower consumption, makes
remote location possible and facilitates transmitting data
through isolation barriers.
These circuits can be used in ratiometric applications or
with an external reference. The high impedance analog
inputs and the ability to operate with reduced spans (be-
low 1V full scale) allow direct connection to sensors and
transducers in many applications, eliminating the need
for gain stages.
Micropower Sampling
®
1000
1096/LTC1096L/LTC1098/LTC1098L are
100
10
1
0.1
Supply Current vs Sample Rate
T
V
A
CC
= 25°C
LTC1096/LTC1096L
LTC1098/LTC1098L
= V
SAMPLE FREQUENCY, f
REF
= 5V
1
SMPL
10
(kHz)
10968 TA02
100
10968fc
1

Related parts for LTC1096IS8

LTC1096IS8 Summary of contents

Page 1

... Battery Gas Gauges n Temperature Measurement n Isolated Data Acquisition L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION 10μW, S8 Package, 8-Bit A/D Samples at 200Hz and Runs Off a 5V Battery 1μF ...

Page 2

... ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LTC1096ACN8#PBF LTC1096ACN8#TRPBF LTC1096ACS8#PBF LTC1096ACS8#TRPBF LTC1096AIN8#PBF LTC1096AIN8#TRPBF LTC1096AIS8#PBF LTC1096AIS8#TRPBF LTC1096CN8#PBF LTC1096CN8#TRPBF LTC1096CS8#PBF LTC1096CS8#TRPBF LTC1096IN8#PBF LTC1096IN8#TRPBF LTC1096IS8#PBF LTC1096IS8#TRPBF LTC1096LCS8#PBF LTC1096LCS8#TRPBF LTC1096LIS8#PBF LTC1096LIS8#TRPBF LTC1098ACN8#PBF LTC1098ACN8#TRPBF LTC1098ACS8#PBF LTC1098ACS8#TRPBF LTC1098CN8#PBF LTC1098CN8#TRPBF LTC1098CS8#PBF LTC1098CS8#TRPBF LTC1098IN8#PBF LTC1098IN8#TRPBF LTC1098IS8#PBF LTC1098IS8#TRPBF LTC1098LCS8#PBF ...

Page 3

... ORDER INFORMATION LEAD BASED FINISH TAPE AND REEL LTC1096ACN8 LTC1096ACN8#TR LTC1096ACS8 LTC1096ACS8#TR LTC1096AIN8 LTC1096AIN8#TR LTC1096AIS8 LTC1096AIS8#TR LTC1096CN8 LTC1096CN8#TR LTC1096CS8 LTC1096CS8#TR LTC1096IN8 LTC1096IN8#TR LTC1096IS8 LTC1096IS8#TR LTC1096LCS8 LTC1096LCS8#TR LTC1096LIS8 LTC1096LIS8#TR LTC1098ACN8 LTC1098ACN8#TR LTC1098ACS8 LTC1098ACS8#TR LTC1098CN8 LTC1098CN8#TR LTC1098CS8 LTC1098CS8#TR LTC1098IN8 LTC1098IN8#TR LTC1098IS8 LTC1098IS8#TR LTC1098LCS8 ...

Page 4

LTC1096/LTC1096L LTC1098/LTC1098L RECOMMENDED OPERATING CONDITIONS LTC1096/LTC1098 SYMBOL PARAMETER CS High Time Between Data Transfer Cycles t WHCS CS Low Time During Data Transfer t WLCS Operation CC f Clock Frequency CLK t Total Cycle Time CYC t ...

Page 5

CONVERTER AND MULTIPLEXER CHARACTERISTICS LTC1096/LTC1098 The l denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are 5V 5V 500kHz, unless otherwise noted. CC REF CLK ...

Page 6

LTC1096/LTC1096L LTC1098/LTC1098L DIGITAL AND DC ELECTRICAL CHARACTERISTICS LTC1096/LTC1098 The l denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are 5V 5V, unless otherwise noted. CC REF SYMBOL ...

Page 7

DIGITAL AND DC ELECTRICAL CHARACTERISTICS LTC1096L/LTC1098L The l denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are 2.65V 2.5V 250kHz, unless otherwise noted. CC REF ...

Page 8

LTC1096/LTC1096L LTC1098/LTC1098L AC CHARACTERISTICS LTC1096/LTC1098 The l denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are 3V 2.5V 250kHz, unless otherwise noted. CC REF CLK ...

Page 9

TYPICAL PERFORMANCE CHARACTERISTICS Supply Current vs Clock Rate for Active and Shutdown Modes 250 T = 25° 200 150 100 50 10 0.002 ...

Page 10

LTC1096/LTC1096L LTC1098/LTC1098L TYPICAL PERFORMANCE CHARACTERISTICS Maximum Clock Frequency vs Source Resistance 25° INPUT CC REF IN 0.75 – INPUT – R SOURCE 0.50 0. – R ...

Page 11

PIN FUNCTIONS LTC1096/LTC1096L CS/SHDN (Pin 1): Chip Select Input. A logic low on this input enables the LTC1096/LTC1096L. A logic high on this input disables the LTC1096/LTC1096L and disconnects the power to the LTC1096/LTC1096L (Pin 2): Analog Input. ...

Page 12

LTC1096/LTC1096L LTC1098/LTC1098L BLOCK DIAGRAM + IN (CH0) – IN (CH1) 10968 BD TEST CIRCUITS On and Off Channel Leakage Current OFF A • • • • POLARITY 12 LTC1096/LTC1096L ...

Page 13

TEST CIRCUITS Voltage Waveforms for D Delay Time, t OUT CLK dDO D OUT Load Circuit for t and t dis TEST POINT 3k D OUT 100pF Voltage Waveforms for D dDO D OUT ...

Page 14

LTC1096/LTC1096L LTC1098/LTC1098L TEST CIRCUITS LTC1096/LTC1096L CS CLK D OUT LTC1098/LTC1098L CLK D OUT 14 Voltage Waveforms for WAKEUP START 10968 TC07 ...

Page 15

APPLICATIONS INFORMATION OVERVIEW The LTC1096/LTC1096L/LTC1098/LTC1098L are 8-bit micropower, switched-capacitor A/D converters. These sampling ADCs typically draw 120μA of supply current when sampling up to 33kHz. Supply current drops linearly as the sample rate is reduced (see Supply Current vs Sample ...

Page 16

LTC1096/LTC1096L LTC1098/LTC1098L APPLICATIONS INFORMATION CS CLK t suCS t WAKEUP D OUT HI-Z CS CLK t suCS t WAKEUP D Hi-Z OUT *AFTER COMPLETING THE DATA TRANSFER, IF FURTHER CLOCKS ARE APPLIED WITH CS LOW, THE ADC WILL OUTPUT ZEROS ...

Page 17

APPLICATIONS INFORMATION MSB-FIRST DATA (MSBF = WAKEUP CLK t ODD/ suCS START SIGN D IN MSBF SGL/ DIFF HI-Z D OUT t SMPL MSB-FIRST DATA (MSBF = WAKEUP CLK t ODD/ suCS START SIGN ...

Page 18

LTC1096/LTC1096L LTC1098/LTC1098L APPLICATIONS INFORMATION Multiplexer (MUX) Address The bits of the input word following the START bit assign the MUX confi guration for the requested conversion. For a given channel selection, the converter will measure the voltage between the two ...

Page 19

APPLICATIONS INFORMATION CS 1 CLK DATA ( START IN OUT MPU CONTROLS DATA LINE AND SENDS MUX ADDRESS TO LTC1098(L) Figure 3. LTC1098(L) Operation with D the data line and drive it low on the 4th falling CLK ...

Page 20

LTC1096/LTC1096L LTC1098/LTC1098L APPLICATIONS INFORMATION of the converter will draw current. This current may be larger than the typical supply current worthwhile to bring the CS pin all the way to ground when it is low and all the ...

Page 21

APPLICATIONS INFORMATION (Figure 6) and connect the center point to the MPU input. It should be noted that to get full shutdown, the CS input of the LTC1096/LTC1098 must be driven to the V age. This would require adding a ...

Page 22

LTC1096/LTC1096L LTC1098/LTC1098L APPLICATIONS INFORMATION in and continues until the falling CLK edge after the MSBF bit is received. On this falling edge, the S&H goes into hold mode and the conversion begins. Differential Inputs With differential inputs, the ADC no ...

Page 23

APPLICATIONS INFORMATION Large external source resistors and capacitances will slow the settling of the inputs important that the overall RC time constants be short enough to allow the analog inputs to completely settle within the allowed time. RC ...

Page 24

LTC1096/LTC1096L LTC1098/LTC1098L APPLICATIONS INFORMATION related to reference voltage for a typical value of V example 2mV which is 0.1LSB with a 5V reference OS becomes 0.5LSB with a 1V reference and 2.5LSBs with a 0.2V reference. If ...

Page 25

APPLICATIONS INFORMATION Effective Number of Bits The effective number of bits (ENOBs measurement of the resolution of an A/D and is directly related to the S/( the equation: ENOB = [S/( –1.76]/6.02 where ...

Page 26

LTC1096/LTC1096L LTC1098/LTC1098L TYPICAL APPLICATIONS MPU TRANSMIT 0 0 WORD CLK D OUT MPU RECEIVED ? ? WORD Hardware and Software Interface to Motorola MC68HC05C4 CS CLK ANALOG LTC1098 INPUTS OUT D from LTC1098(L) Stored ...

Page 27

TYPICAL APPLICATIONS Interfacing to the Parallel Port of the Intel 8051 Family The Intel 8051 has been chosen to demonstrate the interface between the LTC1098(L) and parallel port mi- croprocessors. Normally the CS, CLK and D would be generated on ...

Page 28

LTC1096/LTC1096L LTC1098/LTC1098L A “Quick Look” Circuit for the LTC1096 Users can get a quick look at the function and timing of the LT1096 by using the following simple circuit (Figure 13 tied applied ...

Page 29

Remote or Isolated Systems Figure 16 shows a fl oating system that sends data to a grounded host system. The fl oating circuitry is isolated by two optoisolators and powered by a simple capacitor diode charge pump. The system has ...

Page 30

LTC1096/LTC1096L LTC1098/LTC1098L PACKAGE DESCRIPTION .300 – .325 (7.620 – 8.255) .008 – .015 (0.203 – 0.381) +.035 .325 –.015 ( ) +0.889 8.255 –0.381 NOTE: 1. DIMENSIONS ARE MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH ...

Page 31

... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 32

... Complete with V Low Power, Small Size, Low Cost Low Power, Small Size, Low Cost www.linear.com ● 470k TO μP 20M + LO BATTERY 1/2 LT1178 470k – 10968 F17 , CLK, Sample-and-Hold REF 10968fc LT 0708 REV C • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 1994 ...

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