參數(shù)資料
型號: LTC1406
廠商: Linear Technology Corporation
英文描述: Low Power, 8-Bit, 20Msps, Sampling A/D Converter(低功耗,12位, 20Msps,采樣模數(shù)轉(zhuǎn)換器)
中文描述: 低功耗,8位,20Msps,采樣A / D轉(zhuǎn)換器(低功耗,12位,20Msps,采樣模數(shù)轉(zhuǎn)換器)
文件頁數(shù): 1/16頁
文件大小: 367K
代理商: LTC1406
1
LTC1406
Low Power, 8-Bit, 20Msps,
Sampling A/D Converter
DESCRIPTIO
N
U
The LTC
1406 is a 20Msps, 8-bit, sampling A/D converter
which draws only 150mW from a single 5V supply. This
easy-to-use device includes a high dynamic range sample-
and-hold with a 250MHz bandwidth.
The LTC1406’s full-scale input range is
±
1V. The inputs
can be driven differentially or one input can be tied to a
fixed voltage and the other input driven with a
±
1V bipolar
input. Maximum DC specifications include
±
1LSB DNL
and INL over temperature. Outstanding AC performance
includes 48.5dB S/(N + D) and 62dB THD with a 1MHz
input; 47.5dB S/(N + D) and 59dB THD at the Nyquist input
frequency of 10MHz.
The unique differential input sample-and-hold can acquire
single-ended or differential input signals up to its 250MHz
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 an 8-bit parallel output port with separate
power supply and ground allowing easy interface to 3V
digital systems. The pipelined architecture has five clock
cycles of data latency.
FEATURES
I
Low Power, 8-Bit, 20Msps ADC
I
250MHz Internal Sample-and-Hold
I
7 Effective Bits at 70MHz Input Frequency
I
±
1LSB DNL and INL Max
I
Single 5V Supply and 150mW Dissipation
I
Power Down to 1
μ
A
I
True Differential Inputs Reject Common Mode Noise
I
Accepts Single-Ended or Differential Input Signals
I
±
1V Differential or 2V Single-Ended Input Span
I
Analog Inputs Common Mode to V
DD
and GND
I
24-Pin Narrow SSOP Package
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
N
U
Low Power, 20MHz, 8-Bit Sampling ADC
INPUT FREQUENCY (Hz)
E
S
2
4
6
100k
1M
10M
100M
1406 TA02
0
3
5
7
1
8
50
44
38
32
Effective Bits and Signal-to-Noise + Distortion
vs Input Frequency
APPLICATIO
S
U
I
Telecommunications
I
Wireless Communications
I
Digital Cellular Telephones
I
CCDs and Image Scanners
I
Video Digitizing and Digital Television
I
Digital Color Copiers
I
High Speed Undersampling
I
Personal Computer Video
I
High Speed Data Acquisition
TRACK-AND-
HOLD AMP
DIGITAL
DATA
8-BIT
PIPELINE
ADC
2.5k
AV
DD
V
BIAS
V
REF
OV
DD
DV
DD
OGND
AGND
AGND
SHDN
1.95k
2.2V
OUTPUT
DRIVERS
OF/UF
D7
D6
D5
D4
D3
D2
D1
D0
1406 BD
CLOCK
CIRCUITRY
CLK
A
IN+
7
8
9
4
10
3
5
6
1
23
22
2
11
12
21
20
19
18
17
16
15
24
A
IN–
DGND
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