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參數(shù)資料
| 型號： | LTC1405IGN#TRPBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 12BIT 5MSPS SAMPLE 28SSOP |
| 標準包裝： | 2,500 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 5M |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 145mW |
| 電壓電源： | 雙 ± |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SSOP（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 28-SSOP |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 2 個單端，雙極；1 個差分，雙極 |
1
LTC1405
1405fa
TYPICAL APPLICATION
U
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
12-Bit, 5Msps,
Sampling ADC
The LTC
1405 is a 5Msps, 12-bit sampling A/D converter
that draws only 115mW from either single 5V or dual ±5V
supplies. This easy-to-use device includes a high dynamic
range sample-and-hold, a precision reference and a PGA
input circuit.
The LTC1405 has a flexible input circuit that allows full-scale
input ranges of ±2.048V, ±1.024V and ±0.512V. The input
common mode range is rail-to-rail and a common mode
bias voltage is provided for single supply applications. The
input PGA has a digitally selectable 1x or 2x gain.
Maximum DC specs include ±1LSB INL and ±1LSB DNL
over temperature. Outstanding AC performance includes
71.3dB S/(N + D) and 85dB SFDR at the Nyquist input fre-
quency of 2.5MHz.
The unique differential input sample-and-hold can acquire
single-ended or differential input signals up to its 100MHz
bandwidth. The 75dB common mode rejection allows users
to eliminate ground loops and common mode noise by
measuring signals differentially from the source. A sepa-
rate output logic supply allows direct connection to 3V
components.
■ 5Msps Sample Rate
■ Low Power Dissipation: 115mW
■ Single 5V Supply or ±5V Supplies
■ 71.3dB S/(N + D) and 85dB SFDR at Nyquist
■ 100MHz Full-Power Bandwidth Sampling
■ Input PGA
■ Integral Nonlinearity Error <0.35LSB
■ Differential Nonlinearity <0.25LSB
■ ±2.048V, ±1.024V and ±0.512V Bipolar Input Range
■ Out-of-Range Indicator
■ True Differential Inputs with 75dB CMRR
■ Pin-Compatible 10Msps Version (LTC1420)
■ 28-Pin Narrow SSOP Package
■
Telecommunications
■ Digital Signal Processing
■ Multiplexed Data Acquisition Systems
■
High Speed Data Acquisition
■ Spectral Analysis
■ Imaging Systems
Typical INL Curve
CODE
0
1024
2048
3072
4096
INL
(LSBs)
1405 TA02
1.00
0.75
0.50
0.25
0
–0.25
–0.50
–0.75
–1.00
DIGITAL CORRECTION
LOGIC
OUTPUT
BUFFERS
1405 TA01
MODE SELECT
S/H
5V
1F
0V OR –5V
1F
VCM
GAIN
5V
1F
5V
VDD
(PIN 23)
VDD
(PIN 7)
1F
OVDD
OGND
OPTIONAL 3V
LOGIC SUPPLY
OF
D11 (MSB)
D0 (LSB)
5MHz CLK
SENSE
VREF
–AIN
+
AIN
VSS
GND
(PIN 6)
GND
(PIN 24)
GND
(PIN 8)
2.048V
2.5V
REFERENCE
PIPELINED 12-BIT ADC
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
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