参数资料
型号: LTC1406IGN
厂商: Linear Technology
文件页数: 1/16页
文件大小: 0K
描述: IC A/D CONV 8BIT SAMPLING 24SSOP
标准包装: 55
位数: 8
采样率(每秒): 20M
数据接口: 并联
转换器数目: 1
功率耗散(最大): 225mW
电压电源: 模拟和数字,双 ±
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-SSOP(0.154",3.90mm 宽)
供应商设备封装: 24-SSOP
包装: 管件
输入数目和类型: 2 个单端,双极;1 个差分,双极
产品目录页面: 1349 (CN2011-ZH PDF)
1
LTC1406
Low Power, 8-Bit, 20Msps,
Sampling A/D Converter
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.
DESCRIPTION
U
FEATURES
s
Low Power, 8-Bit, 20Msps ADC
s
250MHz Internal Sample-and-Hold
s
7 Effective Bits at 70MHz Input Frequency
s
±1LSB DNL and INL Max
s
Single 5V Supply and 150mW Dissipation
s
Power Down to 1
A
s
True Differential Inputs Reject Common Mode Noise
s
Accepts Single-Ended or Differential Input Signals
s
±1V Differential or 2V Single-Ended Input Span
s
Analog Inputs Common Mode to VDD and GND
s
24-Pin Narrow SSOP Package
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
U
Low Power, 20MHz, 8-Bit Sampling ADC
INPUT FREQUENCY (Hz)
EFFECTIVE
BITS
S/(N
+
D)
(dB)
2
4
6
100k
1M
10M
100M
1406 TA02
0
3
5
7
1
850
44
38
32
Effective Bits and Signal-to-Noise + Distortion
vs Input Frequency
APPLICATIONS
U
s
Telecommunications
s
Wireless Communications
s
Digital Cellular Telephones
s
CCDs and Image Scanners
s
Video Digitizing and Digital Television
s
Digital Color Copiers
s
High Speed Undersampling
s
Personal Computer Video
s
High Speed Data Acquisition
TRACK-AND-
HOLD AMP
DIGITAL
DATA
8-BIT
PIPELINE
ADC
2.5k
AVDD
VBIAS
VREF
OVDD
DVDD
OGND
AGND
SHDN
1.95k
2.2V
OUTPUT
DRIVERS
OF/UF
D7
D6
D5
D4
D3
D2
D1
D0
1406 BD
CLOCK
CIRCUITRY
CLK
AIN
+
7
8
94
10
3
5
6
1
23
2
11
12
22
21
20
19
18
17
16
15
24
AIN
DGND
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