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LTC1279ISW Datasheet

  • LTC1279ISW

  • 12-Bit, 600ksps Sampling A/D Converter with Shutdown

  • 16頁(yè)

  • LINER

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LTC1279
12-Bit, 600ksps Sampling
A/D Converter with Shutdown
FEATURES
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
s
Single Supply 5V or
鹵5V
Operation
Sample Rate: 600ksps
70dB S/(N + D) and 74dB THD at Nyquist
Power Dissipation: 60mW Typ
Power Shutdown with Instant Wake-Up
Internal Reference Can Be Overdriven Externally
Internal Synchronized Clock; No Clock Required
High Impedance Analog Input
Input Range: 0V to 5V or
鹵2.5V
New Flexible, Friendly Parallel Interface Eases
Connections to DSPs and FIFOs
24-Pin SO Wide Package
The LTC
廬
1279 is a 1.4碌s, 600ksps, sampling 12-bit A/D
converter which draws only 60mW from a single 5V or
鹵5V
supplies. This easy-to-use device comes complete
with a 160ns sample-and-hold, a precision reference and
an internally trimmed clock. Unipolar and bipolar conver-
sion modes add to the flexibility of the ADC. The low
power dissipation is reduced even more, drawing only
8.5mW in power shutdown mode. Instant wake-up from
power shutdown allows the converter to be powered
down even during brief inactive periods.
The LTC1279 converts 0V to 5V unipolar inputs from a
single 5V supply and
鹵2.5V
bipolar inputs from
鹵5V
supplies. Maximum DC specs include
鹵1LSB
INL and
鹵1LSB
DNL. Outstanding guaranteed AC performance
includes 70dB S/(N + D) and 78dB THD at the input
frequency of 100kHz over temperature.
The internal clock is trimmed for 1.4碌s conversion time.
The clock automatically synchronizes to each sample
command, eliminating problems with asynchronous clock
noise found in competitive devices. A separate conversion
start input and a data-ready signal (BUSY) ease connec-
tions to FIFOs, DSPs and microprocessors.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATI
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High Speed Data Acquisition
Digital Signal Processing
Multiplexed Data Acquisition Systems
Audio and Telecom Processing
Spectrum Analysis
TYPICAL APPLICATI
Single 5V Supply, 600kHz, 12-Bit Sampling A/D Converter
LTC1279
ANALOG INPUT 1 A
AV
DD
(0V TO 5V) 2
IN
V
REF
V
SS
3
AGND
BUSY
0.1碌F
4
D11(MSB)
CS
5
D10
RD
6
D9
CONVST
7
D8
SHDN
8
D7
DV
DD
9
12-BIT
D6
D0
PARALLEL
10
D5
D1
BUS
11
D4
D2
12
DGND
D3
5V
24
23
22
21
20
19
18
17
16
15
14
13
10碌F
碌P
CONTROL
LINES
CONVERSION-START INPUT
POWER SHUTDOWN INPUT
Effective Bits and Signal-to-(Noise + Distortion)
vs Input Frequency
12
11
0.1碌F
EFFECTIVE NUMBER OF BITS
2.42V
REFERENCE
OUTPUT
+
+
10碌F
10
9
8
7
6
5
4
3
2
1
0
10k
LTC1279 鈥?TA01
U
74
68
NYQUIST
FREQUENCY
62
56
50
SIGNAL/(NOISE + DISTORTION) (dB)
UO
UO
f
SAMPLE
= 600kHz
100k
1M
FREQUENCY (Hz)
5M
1279 G03
1

LTC1279ISW 產(chǎn)品屬性

  • LTC1279

  • 32

  • 集成電路 (IC)

  • 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器

  • -

  • 12

  • 600k

  • 并聯(lián)

  • 1

  • 120mW

  • 雙 ±

  • -40°C ~ 85°C

  • 表面貼裝

  • 24-SOIC（0.295"，7.50mm 寬）

  • 24-SOIC

  • 管件

  • 1 個(gè)單端，單極；1 個(gè)單端，雙極

  • LTC1279IS

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