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參數(shù)資料
| 型號： | LTC1412CG |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | 12-Bit, 3Msps, Sampling A/D Converter |
| 中文描述： | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28 |
| 封裝： | 0.209 INCH, PLASTIC, SSOP-28 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 499K |
| 代理商： | LTC1412CG |
1
LTC1412
12-Bit, 3Msps,
Sampling A/D Converter
The LTC
1412 is a 12-bit, 3Msps, sampling A/D con-
verter. This high performance device includes a high
dynamic range sample-and-hold and a precision refer-
ence. Operating from
±
5V supplies it draws only 150mW.
The
±
2.5V input range is optimized for low noise and low
distortion. Most high performance op amps also perform
best over this range, allowing direct coupling to the analog
inputs and eliminating the need for special translation
circuitry. Outstanding AC performance includes 72dB
S/(N + D) and 82dB SFDR at the Nyquist input frequency
of 1.5MHz.
The unique differential input sample-and-hold can acquire
single-ended or differential input signals up to its 40MHz
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 high speed 12-bit parallel output port. There
is no pipeline delay in the conversion results. A separate
convert start input and converter status signal (BUSY)
ease connections to FIFOs, DSPs and microprocessors. A
digital output driver power supply pin allows direct con-
nection to 3V logic.
DESCRIPTIO
N
U
FEATURES
TYPICAL APPLICATIO
N
U
12-BIT ADC
12
5V
OPTIONAL
3V LOGIC
SUPPLY
10
μ
F
AV
DD
DV
DD
OV
DD
OGND
1412 TA01
DGND
D11 (MSB)
D0 (LSB)
BUSY
CS
CONVST
S/H
BUFFER
LTC1412
4.0625V
2k
–5V
2.5V
REFERENCE
TIMING AND
LOGIC
OUTPUT
BUFFERS
AGND
V
SS
10
μ
F
10
μ
F
V
REF
COMP
A
IN–
A
IN+
Effective Bits and Signal-to-Noise + Distortion
vs Input Frequency
12
INPUT FREQUENCY (Hz)
2
E
4
6
8
10
1k
100k
1M
10M
1412 G01
0
10k
S
62
56
74
68
I
Telecommunications
I
Digital Signal Processing
I
Mulitplexed Data Acquisition Systems
I
High Speed Data Acquisition
I
Spectrum Analysis
I
Imaging Systems
APPLICATIO
S
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
I
Sample Rate: 3Msps
I
72dB S/(N + D) and 82dB SFDR at Nyquist
I
±
0.35LSB INL and
±
0.25LSB DNL (Typ)
I
Power Dissipation: 150mW
I
External or Internal Reference Operation
I
True Differential Inputs Reject Common Mode Noise
I
40MHz Full Power Bandwidth Sampling
I
±
2.5V Bipolar Input Range
I
No Pipeline Delay
I
28-Pin SSOP Package
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