LTC1427CS8-50 Linear Technology, LTC1427CS8-50 Datasheet

IC D/A CONV 10BIT W/SMBUS 8-SOIC

LTC1427CS8-50

Manufacturer Part Number
LTC1427CS8-50
Description
IC D/A CONV 10BIT W/SMBUS 8-SOIC
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1427CS8-50

Number Of Bits
10
Data Interface
Serial
Number Of Converters
1
Voltage Supply Source
Single Supply
Power Dissipation (max)
550µW
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Settling Time
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTC1427CS8-50
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LTC1427CS8-50#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LTC1427CS8-50#TRPBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
APPLICATIONS
FEATURES
TYPICAL
Precision 50 A, 1.5% Initial Full-Scale Output
Wide Output Voltage DC Compliance: – 15V to
(V
Wide Supply Range: 2.7V V
Supply Current in Shutdown: 10 A Typ
Low Supply Current: 115 A Typ
Available in 8-Pin SO
SMBus Serial Interface
Four Selectable SMBus Addresses
DAC Powers Up at Zero or Midscale
DAC Contents Are Retained in Shutdown
LCD Contrast and Backlight Brightness Control
Power Supply Voltage Adjustment
Battery Charger Voltage/Current Adjustment
GaAs FET Bias Adjustment
Trimmer Pot Elimination
CC
Current, 2.5% Over Temperature
– 1.3V)
APPLICATION
L1 = 10 H SUMIDA CD43
D1 =MBR0530
MURATA-ERIE LQH3C
OR COILCRAFT DO1608
2 TO 4
CELLS
U
1 F
SHDN
CC
U
3
SHDN
GND
V
5.5V
IN
6
4
*V
Digitally Controlled LCD Bias Generator
LT1317
OUT
L1
= 12.7V TO 24V IN 11mV STEPS
15mA (2 CELLS)
35mA ( 3 CELLS)
SW
V
FB
C
5
1
100k
4700pF
2
D1
R1
226k
1%
R2
12.1k
1%
Micropower, 10-Bit Current
DESCRIPTION
The LTC
DAC with an output range of 0 A to 50 A. The DAC output is
guaranteed monotonic and DNL is less than 0.9LSB under all
operating conditions. Full-scale accuracy is 2.5% over
the commercial temperature range. The LTC1427-50 oper-
ates with power supply voltages from 2.7V to 5.5V and the
DAC current source output can be biased from (V
to – 15V.
The LTC1427-50 communicates with external circuitry by
using the SMBus serial interface. It acts as an SMBus slave
device using one of four selectable SMBus addresses set by
the two address pins AD0 and AD1 .
On power-up, the DAC output assumes midrange or zero
scale, depending on the logic state of the two address pins.
The LTC1427-50 can be shut down through the SHDN pin or
by setting the SHDN bit = 1 in the SMBus command byte.
Digital data for the DAC output is retained internally and the
supply current drops to 10 A typically when in shutdown.
The LTC1427-50 is available in an 8-pin SO package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
C1
1 F
Output DAC with SMBus
V
OUT
®
*
1427-50 is a micropower, 10-Bit current output
1
2
3
4
SHDN
AD1
AD0
GND
LTC1427-50
U
I
SDA
SCL
V
OUT
CC
Serial Interface
8
7
6
5
3.3V
V
CC
P1.2
P1.1
P1.0
(e.g., 8051)
LTC1427-50
PU
1427 TA02
CC
– 1.3V)
1

Related parts for LTC1427CS8-50

LTC1427CS8-50 Summary of contents

Page 1

... SHDN bit = 1 in the SMBus command byte. Digital data for the DAC output is retained internally and the supply current drops typically when in shutdown. The LTC1427-50 is available in an 8-pin SO package. , LTC and LT are registered trademarks of Linear Technology Corporation. Digitally Controlled LCD Bias Generator D1 L1 ...

Page 2

... OUT AD0, AD1 SHDN SCL, SDA SHDN, AD0, AD1 SCL, SDA I = 3mA, SDA Only OUT U W INFORMATION ORDER PART TOP VIEW NUMBER LTC1427CS8-50 OUT 6 SCL 5 SDA S8 PART MARKING S8 PACKAGE 14275 = 125 C, = 190 MIN TYP MAX 2.7 5.5 115 225 49.25 50 50.75 48 ...

Page 3

RECO E DED OPERATI G CO DITIO 3.3V operating temperature range unless otherwise specified SYMBOL PARAMETER SMBus Timing (Notes SMB Operating Frequency SMB t Bus Free Time ...

Page 4

LTC1427- TYPICAL PERFORMANCE CHARACTERISTICS Zero-Scale Current vs Temperature 0.02 0 –0.02 –0.04 –0.06 –0.08 –0.10 –0.12 –0.14 –0. OUT –0.18 –50 – TEMPERATURE ( C) Bias Voltage Rejection (Zero-Scale ...

Page 5

PIN FUNCTIONS SHDN (Pin 1): Shutdown. A logic low puts the chip into shutdown mode. In shutdown, the digital settings for the DAC are retained. On release from shutdown, the previ- ously programmed value for I is ...

Page 6

LTC1427- DIAGRA S t BUF SDA t HD:STA SCL t LOW STOP START SMBus Write Byte Protocol, with SMBus Address = 0101111B, Command Byte = 0XXXXX11B and Data Byte = 11111111B AD1 AD0 SMBUS ...

Page 7

... 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 The Slave Address The LTC1427-50 can respond to one of four 7-bit addresses ...

Page 8

... C1* Q2* Q1* 0 100 H 1N5818 2 0.189 – 0.197* (4.801 – 5.004 0.150 – 0.157** 0.228 – 0.244 (3.810 – 3.988) (5.791 – 6.197 SO8 0996 142750f LT/TP 0398 4K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1998 BAT 8V TO 28V V IN 3.3V 1427 TA01 ...

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