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LTC1409IG Datasheet

  • LTC1409IG

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

  • 411.74KB

  • 20頁

  • LINER

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LTC1409
12-Bit, 800ksps Sampling
A/D Converter with Shutdown
FEATURES
s
s
s
s
s
s
DESCRIPTIO
s
s
s
s
Sample Rate: 800ksps
Power Dissipation: 80mW
72.5dB S/(N + D) and 86dB THD at Nyquist
No Pipeline Delay
Nap (4mW) and Sleep (10碌W) Shutdown Modes
Operates with Internal 15ppm/擄C Reference
or External Reference
True Differential Inputs Reject Common Mode Noise
20MHz Full Power Bandwidth Sampling
鹵2.5V
Bipolar Input Range
28-Pin SO Wide and SSOP Package
The LTC
廬
1409 is a 1碌s, 800ksps, sampling 12-bit A/D
converter that draws only 80mW 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 LTC1409 full-scale input range is
鹵2.5V.
Maximum
DC specs include
鹵1LSB
INL and
鹵1LSB
DNL over tem-
perature. Outstanding AC performance includes 72.5dB
S/(N + D) 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, 12-bit parallel output port.
There is no pipeline delay in the conversion results.
A separate convert start input and a data ready signal
(BUSY) ease connections to FIFOs, DSPs and micropro-
cessors. A digital output driver power supply pin allows
direct connection to 3V logic.
APPLICATI
s
s
s
s
s
s
S
Telecommunications
Digital Signal Processing
Multiplexed Data Acquisition Systems
High Speed Data Acquisition
Spectrum Analysis
Imaging Systems
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATI
800kHz, 12-Bit Sampling A/D Converter
LTC1409
DIFFERENTIAL 1
AV
DD
+A
IN
ANALOG INPUT
(鈥?.5V TO 2.5V) 2
鈥揂
IN
OV
DD
2.50V 3 V
V
SS
V
REF
OUTPUT 4
REF
REFCOMP
BUSY
5
10碌F
AGND
CS
6
D11(MSB) CONVST
7
D10
RD
8
D9
SHDN
9
D8
NAP/SLP
10
D7
OGND
12-BIT
11
D6
D0
PARALLEL
12
BUS
D5
D1
13
D4
D2
14
DGND
D3
5V
28
27
26
25
24
23
22
21
20
19
18
17
16
15
碌P
CONTROL
LINES
鈥?V
10碌F
Effective Bits and Signal-to-(Noise + Distortion)
vs Input Frequency
12
10
10碌F
EFFECTIVE BITS
8
6
4
2
0
1k
f
SAMPLE
= 800ksps
10k
100k
1M
INPUT FREQUENCY (Hz)
LTC1409 鈥?TA01
U
74
68
NYQUIST
FREQUENCY
62
56
50
S/(N + D) (dB)
UO
UO
10M
LTC1409 鈥?TA02
1

LTC1409IG 產(chǎn)品屬性

  • LTC1409

  • 47

  • 集成電路 (IC)

  • 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器

  • -

  • 12

  • 800k

  • 并聯(lián)

  • 1

  • 120mW

  • 雙 ±

  • -40°C ~ 85°C

  • 表面貼裝

  • 28-SSOP（0.209"，5.30mm 寬）

  • 28-SSOP

  • 管件

  • 2 個(gè)單端，雙極；1 個(gè)差分，雙極

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