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參數(shù)資料
| 型號(hào)： | LTC1405 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 12-Bit, 5Msps, Sampling ADC(12位, 5Msps,采樣模數(shù)轉(zhuǎn)換器) |
| 中文描述： | 12位，5Msps，采樣ADC（12位，5Msps，采樣模數(shù)轉(zhuǎn)換器） |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 339K |
| 代理商： | LTC1405 |
1
LTC1405
TYPICAL APPLICATIO
N
U
APPLICATIU
FEATURES
DESCRIPTIOU
The LTC
1405 is a 5Msps, 12-bit sampling A/D converter
that draws only 115mW from either single 5V or dual
±
5V
supplies. This easy-to-use device includes a high dynamic
range sample-and-hold, a precision reference and a PGA
input circuit.
The LTC1405 has a flexible input circuit that allows full-scale
input ranges of
±
2.048V,
±
1.024V and
±
0.512V. The input
common mode range is rail-to-rail and a common mode
bias voltage is provided for single supply applications. The
input PGA has a digitally selectable 1x or 2x gain.
Maximum DC specs include
±
1LSB INL and
±
1LSB DNL
over temperature. Outstanding AC performance includes
71.3dB S/(N + D) and 85dB SFDR at the Nyquist input fre-
quency of 2.5MHz.
The unique differential input sample-and-hold can acquire
single-ended or differential input signals up to its 100MHz
bandwidth. The 75dB common mode rejection allows users
to eliminate ground loops and common mode noise by
measuring signals differentially from the source. A sepa-
rate output logic supply allows direct connection to 3V
components.
12-Bit, 5Msps,
Sampling ADC
I
5Msps Sample Rate
I
Low Power Dissipation: 115mW
I
Single 5V Supply or
±
5V Supplies
I
Integral Nonlinearity Error <0.35LSB
I
Differential Nonlinearity <0.25LSB
I
71.3dB S/(N + D) and 85dB SFDR at Nyquist
I
100MHz Full-Power Bandwidth Sampling
I
±
2.048V,
±
1.024V and
±
0.512V Bipolar Input Range
I
Input PGA
I
Out-of-Range Indicator
I
True Differential Inputs with 75dB CMRR
I
28-Pin Narrow SSOP Package
I
Pin-Compatible 10Msps Version (LTC1420)
I
Telecommunications
I
Digital Signal Processing
I
Multiplexed Data Acquisition Systems
I
High Speed Data Acquisition
I
Spectral Analysis
I
Imaging Systems
, LTC and LT are registered trademarks of Linear Technology Corporation.
Typical INL Curve
CODE
0
1024
2048
3072
4096
I
1405 TA02
1.00
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
DIGITAL CORRECTION
LOGIC
OUTPUT
BUFFERS
1405 TA01
MODE SELECT
S/H
5V
1
μ
F
1
μ
F
0V OR –5V
1
μ
F
1
μ
F
V
CM
GAIN
5V
1
μ
F
5V
V
(PIN 23)
V
(PIN 7)
1
μ
F
OV
DD
OGND
OPTIONAL 3V
LOGIC SUPPLY
OF
D11 (MSB)
D0 (LSB)
5MHz CLK
SENSE
V
REF
–A
IN
+
A
IN
V
SS
GND
(PIN 6)
GND
(PIN 24)
GND
(PIN 8)
2.048V
2.5V
REFERENCE
PIPELINED 12-BIT ADC
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