LTC4302-2_15 Datasheet, PDF (20/20 Pages) Linear Technology – Addressable 2-Wire Bus Buffers

LTC4302-1/LTC4302-2
TYPICAL APPLICATIO
2-WIRE SYSTEM 1
V_CC
C1
0.01µF
R1 R2 R3
R5
10k 10k 8660Ω
V_CC
10k
TO OTHER
SYSTEM 1
DEVICES
SDA1
SCL1
LTC4302-1
SDAIN SDAOUT
SCLIN SCLOUT
CONN
ADDRESS GPIO2
R4
137Ω
GND
GPIO1
IC1
R6
R7
R8
10k 5.1k 5.1k
LONG DISTANCE
BUS
2-WIRE SYSTEM 2
V_CC
C2
0.01µF
R9 R10
10k 10k
V_CC
LTC4302-1
SDAOUT SDAIN
SCLOUT SCLIN
CONN
GPIO2 ADDRESS
GPIO1
GND
IC2
R11
R13 R14
2000Ω 10k 10k
SDA2
SCL2
TO OTHER
SYSTEM 2
DEVICES
R12
1870Ω
4302 F16
Figure 16. Repeater/Bus Extender Application
RELATED PARTS
PART NUMBER
LTC1380/LTC1393
LTC1427-50
LTC1623
LTC1663
LTC1694/LTC1694-1
DESCRIPTION
Single-Ended 8-Channel/Differential 4-Channel Analog
Mux with SMBus Interface
Micropower, 10-Bit Current Output DAC
with SMBus Interface
Dual High Side Switch Controller with SMBus Interface
SMBus Interface 10-Bit Rail-to-Rail Micropower DAC
SMBus Accelerator
LT1786F
SMBus Controlled CCFL Switching Regulator
LTC1695
SMBus/I²C Fan Speed Controller in ThinSOT^TM
LTC1840
Dual I²C Fan Speed Controller
LTC4300A-1/
LTC4300A-2
Hot Swappable 2-Wire Bus Buffers
ThinSOT is a trademark of Linear Technology Corporation.
COMMENTS
Low R_ON: 35Ω Single-Ended/70Ω Differential,
Expandable to 32 Single or 16 Differential Channels
Precision 50µA ± 2.5% Tolerance Over Temperature,
4 Selectable SMBus Addresses, DAC Powers up at Zero or Midscale
8 Selectable Addresses/16-Channel Capability
DNL < 0.75LSB Max, 5-Lead SOT-23 Package
Improved SMBus/I²C Rise-Time,
Ensures Data Integrity with Multiple SMBus/I²C Devices
1.25A, 200kHz, Floating or Grounded Lamp Configurations
0.75Ω PMOS 180mA Regulator, 6-Bit DAC
Two 100µA 8-Bit DACs, Two Tach Inputs, Four GPI0
Provides Capacitance Buffering, SDA and SCL Hot Swapping,
Level Shifting
20 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^q FAX: [phone] ^q www.linear.com
sn430212 430212fs
LT/TP 1003 1K PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2003