Linear Technology LTC1418CG, LOW POWER 14-BIT ADC SERIAL/PARALLEL INTERFACE DC178A DC178A Ficha De Dados
Códigos do produto
DC178A
1
LTC1418
Low Power, 14-Bit, 200ksps
ADC with Serial and Parallel I/O
OUTPUT CODE
4096
0
–1.0
INL (LSBs)
–0.5
0
0.5
1.0
8192
1418 TA02
12288
16384
Typical INL Curve
The LTC
®
1418 is a low power, 200ksps, 14-bit A/D
converter. Data output is selectable for 14-bit parallel or
serial format. This versatile device can operate from a
single 5V or
serial format. This versatile device can operate from a
single 5V or
±
5V supply. An onboard high performance
sample-and-hold, a precision reference and internal tim-
ing minimize external circuitry requirements. The low
15mW power dissipation is made even more attractive
with two user selectable power shutdown modes.
ing minimize external circuitry requirements. The low
15mW power dissipation is made even more attractive
with two user selectable power shutdown modes.
The LTC1418 converts 0V to 4.096V unipolar inputs from
a single 5V supply and
a single 5V supply and
±
2.048V bipolar inputs from
±
5V
supplies. DC specs include
±
1.25LSB INL,
±
1LSB DNL
and no missing codes over temperature. Outstanding AC
performance includes 82dB S/(N + D) and 94dB THD at the
Nyquist input frequency of 100kHz.
performance includes 82dB S/(N + D) and 94dB THD at the
Nyquist input frequency of 100kHz.
The flexible output format allows either parallel or serial I/O.
The SPI/MICROWIRE
The SPI/MICROWIRE
TM
compatible serial I/O port can oper-
ate as either master or slave and can support clock frequen-
cies from DC to 10MHz. A separate convert start input and
a data ready signal (BUSY) allow easy control of conversion
start and data transfer.
cies from DC to 10MHz. A separate convert start input and
a data ready signal (BUSY) allow easy control of conversion
start and data transfer.
DESCRIPTIO
N
U
FEATURES
■
Single Supply 5V or
±
5V Operation
■
Sample Rate: 200ksps
■
±
1.25LSB INL and
±
1LSB DNL Max
■
Power Dissipation: 15mW (Typ)
■
Parallel or Serial Data Output
■
No Missing Codes Over Temperature
■
Power Shutdown: Nap and Sleep
■
External or Internal Reference
■
Differential High Impedance Analog Input
■
Input Range: 0V to 4.096V or
±
2.048V
■
81.5dB S/(N + D) and – 94dB THD at Nyquist
■
28-Pin Narrow PDIP and SSOP Packages
TYPICAL APPLICATIO
N
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
MICROWIRE is a trademark of National Semiconductor Corporation.
■
Remote Data Acquisition
■
Battery Operated Systems
■
Digital Signal Processing
■
Isolated Data Acquisition Systems
■
Audio and Telecom Processing
■
Medical Instrumentation
APPLICATIO
N
S
U
S/H
14
BUFFER
8k
10
µ
F
10
µ
F
REFCOMP
A
IN
–
A
IN
+
V
REF
4.096V
5V
LTC1418
14-BIT ADC
SELECTABLE
SERIAL/
PARALLEL
PORT
D13
DGND
1418 TA01
V
SS
(0V OR – 5V)
AGND
SER/PAR
D5
D4 (EXTCLKIN)
D3 (SCLK)
D2 (CLKOUT)
D1 (D
OUT
)
D0 (EXT/INT)
V
DD
TIMING AND
LOGIC
2.5V
REFERENCE
BUSY
CS
RD
CONVST
SHDN
CS
RD
CONVST
SHDN
1
µ
F
Low Power, 200kHz, 14-Bit Sampling A/D Converter