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TLC3545 Datasheet Preview

TLC3545 Datasheet

Serial ADC

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TLC3541, TLC3545
SLAS345 − DECEMBER 2001
5ĆV, LOW POWER, 14ĆBIT, 200ĆKSPS
SERIAL ANALOGĆTOĆDIGITAL CONVERTERS WITH AUTOĆPOWER DOWN
FEATURES
D 200-KSPS Sampling Rate
D Built-In Conversion Clock
D INL: ±1 LSB Max
DNL: ±1 LSB Max
D SINAD = 81.5 dB, SFDR = 95 dB
THD = 94 dB at 15 kHz fin, 200 KSPS
D SPI/DSP-Compatible Serial Interfaces With
SCLK Input up to 15 MHz
D Single 5-V Supply
D Rail-to-Rail Analog Input With 500 kHz BW
D Two Input Options Available:
− TLC3541 − Single Channel Input
− TLC3545 − Single Channel,
Pseudo-Differential Input
D (TLC3541) Optimized DSP Interface −
Requires FS Input Only
D Low Power With Auto-Power Down
− Operating Current: 3.5 mA
− Auto-Powerdown Current: 5 µA
D Pin Compatible 12-/14-/16-Bit Family in 8-Pin
SOIC and MSOP Packages
TLC3541
D OR DGK Package
(TOP VIEW)
CS
1
REF
2
GND
3
AIN
4
8
SDO
7
FS
6
VDD
5
SCLK
APPLICATIONS
D ATE System
D Industrial Process Control
D Measurement
D Motor Control
DESCRIPTION
The TLC3541 and TLC3545 are a family of high
performance, 14-bit, low power, miniature CMOS
analog-to-digital converters (ADCs). These devices
operate from a single 5-V supply. Devices are available
with single, dual, or single pseudo-differential inputs. All
of these devices have a chip select (CS), serial clock
(SCLK), and serial data output (SDO) that provides a
direct 3-wire interface to the serial port of most popular
host microprocessors (SPI interface). When interfaced
with a DSP, a frame sync signal (FS) is used to indicate
the start of a serial data frame on either pin 1 (CS) or pin
7 (FS) for the TLC3541. The TLC3545 ADC connects
to the DSP via pin 1 only (CS).
The TLC3541 and TLC3545 are designed to operate
with low power consumption. The power saving feature
is further enhanced with an auto-power down mode.
This product family features a high-speed serial link to
modern host processors with an external SCLK up to
15 MHz. Both families use a built-in oscillator as the
conversion clock, providing a 2.67 µs maximum
conversion time.
TLC3545
D OR DGK Package
(TOP VIEW)
CS
1
REF
2
GND
3
AIN(+)
4
8
SDO
7
SCLK
6
VDD
5
AIN(−)
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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.
www.ti.com
Copyright 2001, Texas Instruments Incorporated
1




etcTI

TLC3545 Datasheet Preview

TLC3545 Datasheet

Serial ADC

No Preview Available !

TLC3541, TLC3545
SLAS345 − DECEMBER 2001
TA
−40°C to 85°C
functional block diagram
TLC3541
VDD
REF
AVAILABLE OPTIONS
PACKAGED DEVICES
8-MSOP (DGK)
8-SOIC (D)
TLC3541IDGK (PKG Code = AMG) TLC3541ID
TLC3545IDGK (PKG Code = AMM) TLC3545ID
REF
TLC3545
VDD
AIN
S/H
LOW POWER
SAR ADC
SDO
OSC
Conversion
Clock
SCLK
CS
FS
CONTROL
LOGIC
GND
AIN (+)
AIN (−)
S/H
LOW POWER
SAR ADC
SDO
OSC
Conversion
Clock
SCLK
CS
CONTROL
LOGIC
GND
2
www.ti.com


Part Number TLC3545
Description Serial ADC
Maker etcTI
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TLC3545 Datasheet PDF






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