参数资料
型号: LTC1740CG#TR
厂商: Linear Technology
文件页数: 1/16页
文件大小: 0K
描述: IC ADC SMPL 14BIT 6MSPS 36-SSOP
标准包装: 2,000
位数: 14
采样率(每秒): 6M
数据接口: 并联
转换器数目: 1
功率耗散(最大): 300mW
电压电源: 双 ±
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 36-SSOP(0.209",5.30mm 宽)
供应商设备封装: 36-SSOP
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
LTC1740
1740f
APPLICATIO S
U
DESCRIPTIO
U
FEATURES
BLOCK DIAGRA
W
14-Bit, 6Msps,
Sampling ADC
The LTC
1740 is a 6Msps, 14-bit sampling A/D converter
that draws only 245mW from either a single 5V or dual
±5V supplies. This easy-to-use device includes a high
dynamic range sample-and-hold and a programmable
precision reference.
The LTC1740 has a flexible input circuit that allows differ-
ential full-scale input ranges of
±2.5V and ±1.25V with the
internal reference, or any full-scale input range up to
±2.5V with an external reference. The input common
mode voltage is arbitrary, though a 2.5V reference is
provided for single supply applications.
DC specifications include 1LSB typical INL, 0.5LSB typical
DNL and no missing codes over temperature. Outstanding
AC performance includes 79dB S/(N + D) and 91dB SFDR
at an input frequency of 2.5MHz.
The unique differential input sample-and-hold can acquire
single-ended or differential input signals up to its 80MHz
bandwidth. The 75dB common mode rejection allows
users to eliminate ground loops and common mode noise
by measuring signals differentially from the source. A
separate output logic supply allows direct connection to
3V components.
s
6Msps Sample Rate
s
79dB S/(N + D) and 91dB SFDR at 2.5MHz fIN
s
Single 5V Supply or
±5V Supplies
s
Integral Nonlinearity Error: < 1LSB
s
Differential Nonlinearity: < 0.5LSB
s
80MHz Full-Power Bandwidth Sampling
s
±2.5V and ±1.25V Bipolar Input Ranges
s
2.5V Signal Ground Available
s
Out-of-Range Indicator
s
True Differential Inputs with 75dB CMRR
s
Power Dissipation: 245mW
s
36-Pin SSOP Package (0.209 Inch Width)
s
Telecommunications
s
Multiplexed Data Acquisition Systems
s
High Speed Data Acquisition
s
Spectral Analysis
s
Imaging Systems
4096-Point FFT
, LTC and LT are registered trademarks of Linear Technology Corporation.
DIGITAL CORRECTION
LOGIC
1740 TA01
MODE SELECT
PIPELINED 14-BIT ADC
S/H
1
F
1
F
0V OR –5V
1
F
1000pF
+
VIN
VCM
1
F
5V
3V TO 5V
VDD
1
F
OVDD
OGND
OF
D13 (MSB)
6MHz CLK
DIGITAL
OUTPUT
SENSE
VREF
–AIN
+
AIN
VSS
GND
2.250V
2.5V
REFERENCE
1
19
32
VDD
33
1
F
5V
VDD
8
VDD
9
2
3
4
5
30
VSS
29
6
GND
7
GND
10
GND
34
GND
31
11
OGND
CLK
28
35
36
12
D7
D6
18
20
D0 (LSB)
BUSY
26
27
OUTPUT
BUFFERS
FREQUENCY (MHz)
0
–120
AMPLITUDE
(dB)
–100
–80
–60
–40
0
0.5
1.0
1.5
2.0
1740 TA02
2.5
3.0
–20
fSMPL = 6MHz
fIN = 2.5MHz, 5VP-P
5V SUPPLY
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