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LTC1609_15

Description
16-Bit, 200ksps, Serial ADC with Multiple Input Ranges
File Size421KB,24 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet View All

LTC1609_15 Overview

16-Bit, 200ksps, Serial ADC with Multiple Input Ranges

LTC1609
16-Bit, 200ksps, Serial ADC
with Multiple Input Ranges
FEATURES
s
s
DESCRIPTIO
s
s
s
s
s
s
s
s
s
Sample Rate: 200ksps
Input Ranges
Unipolar: 0V to 10V, 0V to 5V and 0V to 4V
Bipolar:
±10V, ±5V
and
±3.3V
Guaranteed No Missing Codes
Serial I/O
Single 5V Supply
Power Dissipation: 65mW Typ
Power Down Mode: 50µW
SNR: 87dB Typ
Operates with Internal or External Reference
28-Pin SSOP and 20-Pin SO Packages
Improved 2nd Source to ADS7809 and AD977A
The LTC
®
1609 is a 200ksps, serial sampling 16-bit A/D
converter that draws only 65mW (typical) from a single 5V
supply. This easy-to-use device includes a sample-and-
hold, a precision reference, a switched capacitor succes-
sive approximation A/D and trimmed internal clock.
The input range is specified for bipolar inputs of
±10V,
±5V
and
±3.3V
and unipolar inputs of 0V to 10V, 0V to 5V
and 0V to 4V. Maximum DC specs include
±2LSB
INL and
16-bit no missing codes over temperature. It has a typical
signal-to-noise ratio of 87dB.
The ADC has a high speed serial interface. The serial
output data can be clocked out using either the internal
serial shift clock or be clocked out by an external shift
clock. A separate convert start input (R/C) and a data ready
signal (BUSY) ease connections to FIFOs, DSPs and
microprocessors.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
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Industrial Process Control
Multiplexed Data Acquisition Systems
High Speed Data Acquisition for PCs
Digital Signal Processing
TYPICAL APPLICATIO
ANALOG INPUT
– 10V TO 10V
200Ω
1
2
100Ω
33.2k
3
4
5
2.5V
200kHz, 16-Bit Serial Sampling ADC Configured for
±10V
Inputs
R1
IN
AGND1
R2
IN
R3
IN
NC
CAP
REF
NC
AGND2
NC
NC
SB/BTC
V
DIG
V
ANA
PWRD
BUSY
LTC1609
CS
NC
NC
R/C
NC
TAG
NC
DATA
28
27
26
25
24
–20
+
10µF
0.1µF
5V
2.2µF
2.5V
+
2.2µF
7
8
9
10
11
12
13
14
22
21
20
19
18
17
16
15
1609 TA01
MAGNITUDE (dB)
+
6
23
SERIAL INTERFACE
EXT/INT DATACLK
DGND
SYNC
U
Nonaveraged 4096 Point FFT Plot
0
f
SAMPLE
= 200kHz
f
IN
= 1kHz
SINAD = 87.2dB
THD = –100.1dB
–40
–60
–80
–100
–120
–130
0
25
50
FREQUENCY (kHz)
1609 G06
U
U
75
100
1609fa
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