参数资料
型号: LTC1415ISW#TR
厂商: Linear Technology
文件页数: 1/24页
文件大小: 0K
描述: IC ADC 12BIT 1.25MSPS SMP 28SOIC
标准包装: 1,000
位数: 12
采样率(每秒): 1.25M
数据接口: 并联
转换器数目: 1
功率耗散(最大): 100mW
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
供应商设备封装: 28-SOIC
包装: 带卷 (TR)
输入数目和类型: 2 个单端,双极;1 个差分,双极
1
LTC1415
12-Bit, 1.25Msps, 55mW
Sampling A/D Converter
U
A
O
PPLICATI
TYPICAL
1.25MHz, 12-Bit Sampling A/D Converter
, LTC and LT are registered trademarks of Linear Technology Corporation.
Effective Bits and Signal-to-(Noise + Distortion)
vs Input Frequency
S
FEATURE
s
1.25Msps Sample Rate
s
Single 5V Supply
s
Power Dissipation: 55mW
s
Nap and Sleep Power Shutdown Modes
s
±0.35LSB INL and ±0.25LSB DNL
s
72dB S/(N + D) and 80dB THD at 100kHz
s
External or Internal Reference Operation
s
True Differential Inputs Reject Common Mode Noise
s
Input Range: 4.096V (1mV/LSB)
s
28-Pin SSOP and SO Packages
D
U
ESCRIPTIO
The LTC
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’s full-scale input range is 4.096V. Low
linearity errors
±0.35LSB INL, ±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
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.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
+AIN
–AIN
VREF
REFCOMP
AGND
D11(MSB)
D10
D9
D8
D7
D6
D5
D4
DGND
AVDD
DVDD
OVDD
BUSY
CS
CONVST
RD
SHDN
NAP/SLP
OGND
D0
D1
D2
D3
LTC1415
10
F
DIFFERENTIAL
ANALOG INPUT
(0V TO 4.096V)
2.50V
VREF OUTPUT
10
F
5V
12-BIT
PARALLEL
BUS
P CONTROL
LINES
1415 TA01
OUTPUT LOGIC
SUPPLY 3V OR 5V
INPUT FREQUENCY (Hz)
1k
EFFECTIVE
BITS
SIGNAL/(NOISE
+
DISTORTION)
(dB)
12
11
10
9
8
7
6
5
4
3
2
1
0
74
68
62
56
10k
100k
LTC1415 TA02
1M
2M
NYQUIST
FREQUENCY
fSAMPLE = 1.25Msps
U
S
A
O
PPLICATI
s
High Speed Data Acquisition
s
Imaging Systems
s
Digital Signal Processing
s
Multiplexed Data Acquisition Systems
s
Telecommunications
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