參數(shù)資料
型號(hào): LTC1279ISW#TR
廠商: Linear Technology
文件頁(yè)數(shù): 1/16頁(yè)
文件大?。?/td> 0K
描述: IC ADC 12BIT SAMPL SHTDWN 24SOIC
標(biāo)準(zhǔn)包裝: 1,000
位數(shù): 12
采樣率(每秒): 600k
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 120mW
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: 24-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 24-SOIC
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 1 個(gè)單端,單極;1 個(gè)單端,雙極
1
LTC1279
12-Bit, 600ksps Sampling
A/D Converter with Shutdown
S
FEATURE
D
U
ESCRIPTIO
s
Single Supply 5V or
±5V Operation
s
Sample Rate: 600ksps
s
70dB S/(N + D) and 74dB THD at Nyquist
s
Power Dissipation: 60mW Typ
s
Power Shutdown with Instant Wake-Up
s
Internal Reference Can Be Overdriven Externally
s
Internal Synchronized Clock; No Clock Required
s
High Impedance Analog Input
s
Input Range: 0V to 5V or
±2.5V
s
New Flexible, Friendly Parallel Interface Eases
Connections to DSPs and FIFOs
s
24-Pin SO Wide Package
U
A
O
PPLICATI
TYPICAL
The LTC
1279 is a 1.4
s, 600ksps, sampling 12-bit A/D
converter which draws only 60mW from a single 5V or
±5V supplies. This easy-to-use device comes complete
with a 160ns sample-and-hold, a precision reference and
an internally trimmed clock. Unipolar and bipolar conver-
sion modes add to the flexibility of the ADC. The low
power dissipation is reduced even more, drawing only
8.5mW in power shutdown mode. Instant wake-up from
power shutdown allows the converter to be powered
down even during brief inactive periods.
The LTC1279 converts 0V to 5V unipolar inputs from a
single 5V supply and
±2.5V bipolar inputs from ±5V
supplies. Maximum DC specs include
±1LSB INL and
±1LSB DNL. Outstanding guaranteed AC performance
includes 70dB S/(N + D) and 78dB THD at the input
frequency of 100kHz over temperature.
The internal clock is trimmed for 1.4
s conversion time.
The clock automatically synchronizes to each sample
command, eliminating problems with asynchronous clock
noise found in competitive devices. A separate conversion
start input and a data-ready signal (BUSY) ease connec-
tions to FIFOs, DSPs and microprocessors.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Single 5V Supply, 600kHz, 12-Bit Sampling A/D Converter
Effective Bits and Signal-to-(Noise + Distortion)
vs Input Frequency
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
AIN
VREF
AGND
D11(MSB)
D10
D9
D8
D7
D6
D5
D4
DGND
AVDD
VSS
BUSY
CS
RD
CONVST
SHDN
DVDD
D0
D1
D2
D3
LTC1279
+
0.1
F
10
F
2.42V
REFERENCE
OUTPUT
ANALOG INPUT
(0V TO 5V)
10
F
0.1
F
5V
12-BIT
PARALLEL
BUS
P CONTROL
LINES
LTC1279 TA01
+
CONVERSION-START INPUT
POWER SHUTDOWN INPUT
U
S
A
O
PPLICATI
s
High Speed Data Acquisition
s
Digital Signal Processing
s
Multiplexed Data Acquisition Systems
s
Audio and Telecom Processing
s
Spectrum Analysis
FREQUENCY (Hz)
10k
EFFECTIVE
NUMBER
OF
BITS
SIGNAL/(NOISE
+
DISTORTION)
(dB)
100k
1M
5M
1279 G03
12
11
10
9
8
7
6
5
4
3
2
1
0
74
68
62
56
50
fSAMPLE = 600kHz
NYQUIST
FREQUENCY
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