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LTC1415IG Datasheet

  • LTC1415IG

  • 12-Bit, 1.25Msps, 55mW Sampling A/D Converter

  • 484.96KB

  • 24頁

  • LINER

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LTC1415
12-Bit, 1.25Msps, 55mW
Sampling A/D Converter
FEATURES
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
1.25Msps Sample Rate
Single 5V Supply
Power Dissipation: 55mW
Nap and Sleep Power Shutdown Modes
鹵
0.35LSB INL and
鹵
0.25LSB DNL
72dB S/(N + D) and 80dB THD at 100kHz
External or Internal Reference Operation
True Differential Inputs Reject Common Mode Noise
Input Range: 4.096V (1mV/LSB)
28-Pin SSOP and SO Packages
The LTC
廬
1415 is a 700ns, 1.25Msps, 12-bit sampling
A/D converter that draws only 55mW from a single 5V
supply. This easy-to-use device includes a high dynamic
range sample-and-hold, precision reference and a trimmed
internal clock. Two power shutdown modes provide flex-
ibility for low power systems.
The LTC1415鈥檚 full-scale input range is 4.096V. Low
linearity errors
鹵0.35LSB
INL,
鹵0.25LSB
DNL make it
ideal for imaging systems. Outstanding AC performance
includes 72dB S/(N + D) and 80dB THD with an input
frequency of 100kHz.
The unique differential input sample-and-hold can acquire
single-ended or differential input signals up to its 18MHz
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 data ready signal (BUSY)
ease connections to FIFOs, DSPs and microprocessors. A
separate output logic supply pin allows direct connection
to 3V components.
APPLICATI
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S
High Speed Data Acquisition
Imaging Systems
Digital Signal Processing
Multiplexed Data Acquisition Systems
Telecommunications
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATI
LTC1415
DIFFERENTIAL 1
+A
IN
ANALOG INPUT
(0V TO 4.096V) 2
鈥揂
IN
2.50V 3 V
V
REF
OUTPUT 4
REF
REFCOMP
5
AGND
10碌F
6
D11(MSB)
7
D10
8
D9
9
D8
10
D7
11
12-BIT
D6
PARALLEL
12
D5
BUS
13
D4
14
DGND
1.25MHz, 12-Bit Sampling A/D Converter
5V
AV
DD
DV
DD
OV
DD
BUSY
CS
CONVST
RD
SHDN
NAP/SLP
OGND
D0
D1
D2
D3
28
27
26
25
24
23
22
21
20
19
18
17
16
15
碌P
CONTROL
LINES
OUTPUT LOGIC
SUPPLY 3V OR 5V
10碌F
Effective Bits and Signal-to-(Noise + Distortion)
vs Input Frequency
12
11
10
9
NYQUIST
FREQUENCY
74
68
62
56
EFFECTIVE BITS
8
7
6
5
4
3
2
1
0
1k
10k
100k
INPUT FREQUENCY (Hz)
1M
2M
f
SAMPLE
= 1.25Msps
1415 TA01
U
SIGNAL/(NOISE + DISTORTION) (dB)
LTC1415 鈥?TA02
UO
UO
1

LTC1415IG 產(chǎn)品屬性

  • LTC1415

  • 47

  • 集成電路 (IC)

  • 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器

  • -

  • 12

  • 1.25M

  • 并聯(lián)

  • 1

  • 100mW

  • 單電源

  • -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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