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LTC1419IG Datasheet

  • LTC1419IG

  • 14-Bit, 800ksps Sampling A/D Converter with Shutdown

  • 20頁

  • LINER

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LTC1419
14-Bit, 800ksps Sampling
A/D Converter with Shutdown
FEATURES
s
s
s
s
s
s
s
DESCRIPTIO
s
s
s
s
Sample Rate: 800ksps
Power Dissipation: 150mW
81.5dB S/(N + D) and 93dB THD
No Missing Codes
No Pipeline Delay
Nap and Sleep Shutdown Modes
Operates with 2.5V Internal 15ppm/擄C
Reference or External Reference
True Differential Inputs Reject Common Mode Noise
20MHz Full-Power Bandwidth Sampling
Bipolar Input Range:
鹵2.5V
28-Pin SSOP and SO Packages
The LTC
廬
1419 is a 1碌s, 800ksps, 14-bit sampling
A/D converter that draws only 150mW from
鹵5V
supplies.
This easy-to-use device includes a high dynamic range
sample-and-hold and a precision reference. Two digitally
selectable power shutdown modes provide flexibility for
low power systems.
The LTC1419 has a full-scale input range of
鹵2.5V.
Out-
standing AC performance includes 81.5dB S/(N + D) and
93dB THD with a 100kHz input; 80dB S/(N + D) and 86dB
THD at the Nyquist input frequency of 400kHz.
The unique differential input sample-and-hold can acquire
single-ended or differential input signals up to its 20MHz
bandwidth. The 60dB common mode rejection allows
users to eliminate ground loops and common mode noise
by measuring signals differentially from the source.
The ADC has a
碌P
compatible, 14-bit parallel output port.
There is no pipeline delay in the conversion results. A
separate convert start input and data ready signal (BUSY)
ease connections to FIFOs, DSPs and microprocessors.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATI
s
s
s
s
s
s
S
Telecommunications
Digital Signal Processing
Multiplexed Data Acquisition Systems
High Speed Data Acquisition
Spectrum Analysis
Imaging Systems
TYPICAL APPLICATI
800kHz, 14-Bit Sampling A/D Converter
LTC1419
DIFFERENTIAL 1
ANALOG INPUT 2 +A
IN
(鈥?.5V TO 2.5V)
鈥揂
IN
3
V
REF
4
REFCOMP
5
10碌F
AGND
6
D13(MSB)
7
D12
8
D11
9
D10
10
D9
11
D8
14-BIT
12
PARALLEL
D7
BUS
13
D6
14
DGND
AV
DD
DV
DD
V
SS
BUSY
CS
CONVST
RD
SHDN
D0
D1
D2
D3
D4
D5
28
27
26
25
24
23
22
21
20
19
18
17
16
15
碌P
CONTROL
LINES
10碌F
鈥?V
10碌F
5V
Effective Bits and Signal-to-(Noise + Distortion)
vs Input Frequency
14
13
12
11
EFFECTIVE BITS
10
9
8
7
6
5
4
3
2
1k
f
SAMPLE
= 800kHz
10k
100k
INPUT FREQUENCY (Hz)
1M 2M
1419 TA02
V
REF
OUTPUT
2.50V
1碌F
1419 TA01
U
86
80
74
68
62
S/(N + D) (dB)
UO
UO
1

LTC1419IG 產(chǎn)品屬性

  • LTC1419

  • 47

  • 集成電路 (IC)

  • 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器

  • -

  • 14

  • 800k

  • 并聯(lián)

  • 1

  • 240mW

  • 雙 ±

  • -40°C ~ 85°C

  • 表面貼裝

  • 28-SSOP（0.209"，5.30mm 寬）

  • 28-SSOP

  • 管件

  • 2 個單端，雙極；1 個差分，雙極

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