LT1319CS Linear Technology, LT1319CS Datasheet

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LT1319CS

Manufacturer Part Number
LT1319CS
Description
IC RCVR BUILDING BLOCK IR 16SOIC
Manufacturer
Linear Technology
Type
Receiverr
Datasheet

Specifications of LT1319CS

Number Of Drivers/receivers
0/1
Protocol
Infrared (IRDA)
Voltage - Supply
5V
Mounting Type
Surface Mount
Package / Case
16-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT1319CS
Manufacturer:
LT
Quantity:
506
Part Number:
LT1319CS
Manufacturer:
LT
Quantity:
19
Part Number:
LT1319CS
Manufacturer:
LINEAR/凌特
Quantity:
20 000
FEATURE
W
TYPICAL
Contact Linear Technology for Potential Replacement
Receives Multiple IR Modulation Methods
Low Noise, High Speed Preamp: 2pA/√Hz, 7MHz
Low Frequency Ambient Rejection Loops
Dual Gain Channels: 8MHz, 400V/V
25ns and 60ns Comparators
16-Lead SO Package
5V Single Supply Operation
Supply Current: 14mA
Shutdown Supply Current: 500μA
External Comparator Threshold Setting
IRDA: SIR, FIR
Sharp/Newton
TV Remote
High Data Rate Modulation Methods
ODULATIO STA DARDS
*BPW34FA OR BPV22NF
FOR INFORMATION PURPOSES ONLY
D1*
APPLICATION
S
OBSOLETE:
C
10nF
F1
U
R
2k
F2
C
100pF
F3
U
U
R
1k
F1
C
1nF
F2
IRDA and Sharp/Newton Data Receiver
100μH
L
F1
C
1μF
B4
Multiple Modulation Standard
1
2
3
4
5
6
7
8
C
2.2nF
F4
D
The LT
contains all the circuitry necessary to transform modu-
lated photodiode signals back to digital signals. The
circuit’s flexibility permits it to receive multiple modulation
methods. A low noise, high frequency preamplifier per-
forms a current-to-voltage conversion while rejecting low
frequency ambient interference with an AC coupling loop.
Two separate high impedance filter buffer inputs are
provided so that off-chip filtering can be tailored for
specific modulation schemes. The filter buffers drive sepa-
rate differential gain stages that end in comparators with
internal hysteresis. The comparator thresholds are adjust-
able externally by the current into Pin 11. One channel has
a high speed 25ns comparator required for high data rates.
The second channel’s comparator has a 60ns response
time and is well suited to more modest data rates. A power
saving shutdown feature is useful in portable applications.
For IRDA 4PPM contact the LTC Marketing Department.
All other trademarks are the property of their respective owners.
AN_GND
IN
FILT1
PREOUT
V
FILTINL
FILT2L
FILTIN
BIAS
ESCRIPTIO
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
LT1319
®
1319 is a general purpose building block that
DIG_GND
BYPASS
DATAL
SHDN
DATA
FILT2
V
V
CC
TH
16
15
14
13
12
11
10
9
U
C
1μF
Infrared Receiver
F5
R
30k
T1
C
0.1μF
C
1μF
B1
T1
SHUTDOWN INPUT
IRDA DATA
SHARP/NEWTON DATA
V
CC
DGND
C
10μF
B2
LT1319
AGND
LT1319 • TA01
C
10μF
B3
1319fb
1

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LT1319CS Summary of contents

Page 1

... A power saving shutdown feature is useful in portable applications. For IRDA 4PPM contact the LTC Marketing Department. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. IRDA and Sharp/Newton Data Receiver ...

Page 2

... Out of Pin 10 (Note 4) ΔV (Pin 7) = – 200mV, 0.1mA Out of Pin 13 (Note 4) ΔV (Pin 9) = 200mV, 800μA Into Pin 10 ΔV (Pin 7) = 200mV, 800μA Into Pin TOP VIEW ORDER PART NUMBER 1 16 BYPASS LT1319CS 3 14 SHDN 4 13 DATAL 5 12 DIG_GND ...

Page 3

ELECTRICAL C HARA TERISTICS 25° SYMBOL PARAMETER Threshold Transimpedance V Threshold External Voltage TH V Shutdown Input High Voltage IH V ...

Page 4

LT1319 W U TYPICAL PERFORMANCE CHARACTERISTICS Preamp Frequency Response vs Input Capacitance 25° 50pF 1 0 –1 10pF 30pF –2 –3 –4 –5 100k 1M 10M 100M FREQUENCY (Hz) 1319 G01 Preamp Output ...

Page 5

W BLOCK DIAGRA DS2 AN_GND 1 DS1 R FB 15k IPD IN – 2 PHOTO- PREAMP DIODE 10k V BIAS + 1 GM1 FILT1 + – 10nF PREOUT 4 V ...

Page 6

LT1319 U U APPLICATIONS INFORMATION Layout and Passive Components The LT1319 requires careful layout techniques to minimize parasitic signal coupling to the preamp input. A sample board layout for the circuit on the first page is shown in the Typical ...

Page 7

U U APPLICATIONS INFORMATION tion, the loops around the gain stages provide an accurate DC threshold setting for the comparators. At DC, the loops force the differential voltages at the output of the gain stages to zero. The comparator threshold ...

Page 8

LT1319 U U APPLICATIONS INFORMATION interaction. Overshoot becomes especially important for high input levels because it can cause false pulses which may not be tolerated in certain modulation schemes also more of a problem in modulation schemes such ...

Page 9

U U APPLICATIONS INFORMATION first trace in the photograph shows the current with the photodiode 10cm from a source with 100mW/sr intensity. At 200mV/div, there is about 40μA of peak current and the decay is consistent with the 210ns time ...

Page 10

LT1319 U U APPLICATIONS INFORMATION current through R which 15kΩ = 182μA where V = 1.9V. At this new level BIAS (0.335V/15kΩ = 22.3μA), Q1 turns on which clamps the preamp output. The collector current of ...

Page 11

... COMPONENT 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 represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. IRDA-SIR/FIR and Sharp or TV Remote Data Receiver ...

Page 12

... Gain Bandwidth, External Comp Pin V : 499-3977 0.386 – 0.394* (9.804 – 10.008 0.150 – 0.157** (3.810 – 3.988 0.004 – 0.010 (0.101 – 0.254) 0.050 (1.270) TYP S16 0695 LT 0307 REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 1995 1319fb ...

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