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LTC1405CGN Datasheet

  • LTC1405CGN

  • 12-Bit, 5Msps, Sampling ADC

  • 16頁

  • LINER

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Final Electrical Specifications
LTC1405
12-Bit, 5Msps,
Sampling ADC
January 2000
FEATURES
s
s
s
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
5Msps Sample Rate
Low Power Dissipation: 115mW
Single 5V Supply or
鹵5V
Supplies
Integral Nonlinearity Error <0.35LSB
Differential Nonlinearity <0.25LSB
71.3dB S/(N + D) and 85dB SFDR at Nyquist
100MHz Full-Power Bandwidth Sampling
鹵2.048V, 鹵1.024V
and
鹵0.512V
Bipolar Input Range
Input PGA
Out-of-Range Indicator
True Differential Inputs with 75dB CMRR
28-Pin Narrow SSOP Package
Pin-Compatible 10Msps Version (LTC1420)
The LTC
廬
1405 is a 5Msps, 12-bit sampling A/D converter
that draws only 115mW from either single 5V or dual
鹵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
鹵2.048V, 鹵1.024V
and
鹵0.512V.
The
input common mode range is rail-to-rail and a common
mode bias voltage is provided for single supply applica-
tions. The input PGA has a digitally selectable 1x or 2x
gain.
Maximum DC specs include
鹵1LSB
INL and
鹵1LSB
DNL
over temperature. Outstanding AC performance includes
71.3dB S/(N + D) and 85dB SFDR at the Nyquist input
frequency 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
separate output logic supply allows direct connection to
3V components.
APPLICATIO S
s
s
s
s
s
s
Telecommunications
Digital Signal Processing
Multiplexed Data Acquisition Systems
High Speed Data Acquisition
Spectral Analysis
Imaging Systems
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
5V
1碌F
GAIN
5V
1碌F
AV
DD
5V
1碌F
DV
DD
OV
DD
OPTIONAL 3V
LOGIC SUPPLY
1.00
0.75
0.50
INL (LSBs)
+
A
IN
S/H
鈥揂
IN
V
CM
1碌F
MODE SELECT
SENSE
PIPELINED 12-BIT ADC
OF
D11 (MSB)
OUTPUT
BUFFERS
DIGITAL CORRECTION
LOGIC
2.5V
REFERENCE
D0 (LSB)
鈥?.00
5MHz CLK
V
REF
1碌F
2.048V
1405 TA01
V
SS
1碌F
0V OR 鈥?V
AGND
DGND
OGND
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However,
no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the
interconnection of its circuits as described herein will not infringe on existing patent rights.
U
Typical INL Curve
0.25
0
鈥?.25
鈥?.50
鈥?.75
0
1024
2048
CODE
3072
4096
1405 TA02
U
U
1

LTC1405CGN 產(chǎn)品屬性

  • LTC1405

  • 49

  • 集成電路 (IC)

  • 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器

  • -

  • 12

  • 5M

  • 并聯(lián)

  • 1

  • 145mW

  • 雙 ±

  • 0°C ~ 70°C

  • 表面貼裝

  • 28-SSOP（0.154"，3.90mm 寬）

  • 28-SSOP

  • 管件

  • 2 個單端，雙極；1 個差分，雙極

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