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參數(shù)資料
| 型號： | LTC1402 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Serial 12-Bit, 2.2Msps Sampling ADC with Shutdown(串行12位，2.2Msps 采樣模數(shù)轉(zhuǎn)換器(帶關(guān)斷)) |
| 中文描述： | 串行12位，2.2Msps采樣ADC（串行12位，2.2Msps采樣模數(shù)轉(zhuǎn)換器（帶關(guān)斷）與關(guān)斷） |
| 文件頁數(shù)： | 1/24頁 |
| 文件大?。?/td> | 280K |
| 代理商： | LTC1402 |
1
LTC1402
Serial 12-Bit, 2.2Msps
Sampling ADC with Shutdown
DESCRIPTIOU
I
Sample Rate: 2.2Msps
I
72dB S/(N + D) and –89dB THD at Nyquist
I
Power Dissipation: 90mW (Typ)
I
80MHz Full Power Bandwidth Sampling
I
No Missing Codes over Temperature
I
Available in 16-Pin Narrow SSOP Package
I
Single Supply 5V or
±
5V Operation
I
Nap Mode with Instant Wake-Up: 15mW
I
Sleep Mode: 10
μ
W
I
True Differential Inputs Reject Common Mode Noise
I
Input Range (1mV/LSB): 0V to 4.096V or
±
2.048V
I
Internal Reference Can Be Overdriven Externally
I
3-Wire Interface to DSPs and Processors (SPI and
MICROWIRE
TM
Compatible)
APPLICATIU
The LTC
1402 is a 12-bit, 2.2Msps sampling A/D con-
verter. This high performance device includes a high dy-
namic range sample-and-hold and a precision reference.
It operates from a single 5V supply or dual
±
5V supplies
and draws only 90mW from 5V.
The versatile differential input offers a unipolar range of
4.096V and a bipolar range of
±
2.048V for dual supply
systems where high performance op amps perform best,
eliminating the need for special translation circuitry.
The high common mode rejection allows users to elimi-
nate ground loops and common mode noise by measuring
signals differentially from the source.
Outstanding AC performance includes 72dB S/(N + D) and
–93dB SFDR at the Nyquist input frequency of 1.1MHz
with dual
±
5V supplies and –84dB SFDR with a single 5V
supply.
The LTC1402 has two power saving modes: Nap and
Sleep. Nap mode consumes only 15mW of power and can
wake up and convert immediately. In Sleep mode, it
typically consumes 10
μ
W of power. Upon power-up from
Sleep mode, a reference ready (REFRDY) signal is avail-
able in the serial data word to indicate that the reference
has settled and the chip is ready to convert.
The 3-wire serial port allows compact and efficient data
transfer to a wide range of microprocessors, microcon-
trollers and DSPs. A digital output driver power supply pin
allows direct connection to 3V or lower logic.
SAMPLE-
AND-HOLD
D
OUT
BIP/UNI
CONV
SCK
OV
DD
10
8
16
15
DV
DD
AV
DD
1
12
11
GAIN
7
5
4
3
–5V OR 0V
10
μ
F
10
μ
F
V
REF
4.096V
10
μ
F
64k
OUTPUT
BUFFER
1402 TA01
2.048
REFERENCE
TIMING
LOGIC
A
IN+
LTC1402
OGND
9
6
2
DGND
A
IN–
5V
3V OR 5V
AGND1
14
13
AGND2
+
–
64k
12-BIT ADC
V
SS
MICROWIRE is a trademark of National Semiconductor Corp.
, LTC and LT are registered trademarks of Linear Technology Corporation.
I
Telecommunications
I
High Speed Data and Signal Acquisition
I
Digitally Multiplexed Data Acquisition Systems
I
Digital Radio Receivers
I
Spectrum Analysis
I
Low Power and Battery-Operated Systems
I
Handheld or Portable Instruments
I
Imaging Systems
5 Harmonic THD, 2nd, 3rd and SFDR
vs Input Frequency (Unipolar)
0
–10
2ND
3RD
f
SAMPLE
= 2.22MHz
INPUT FREQUENCY (Hz)
10
4
10
5
10
6
10
7
–80
–90
T
–60
–70
–40
–50
1401 G05
–100
–110
–120
–20
–30
SFDR
FEATURES
BLOCK DIAGRA
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| LTC1405 | 12-Bit, 5Msps, Sampling ADC(12位, 5Msps,采樣模數(shù)轉(zhuǎn)換器) |
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| LTC1402CGN#PBF | 功能描述:IC ADC 12BIT 2.2MSPS SHDN 16SSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個(gè)單端，單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
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| LTC1402CGNPBF | 制造商:Linear Technology 功能描述:ADC,LTC1402 12bit 2.2MSPS SPI SSOP |
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