LTC1744CFW Linear Technology, LTC1744CFW Datasheet - Page 16
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LTC1744CFW
Manufacturer Part Number
LTC1744CFW
Description
IC ADC 14BIT 50MSPS 48-TSSOP
Manufacturer
Linear Technology
Datasheet
1.LTC1744CFWPBF.pdf
(24 pages)
Specifications of LTC1744CFW
Number Of Bits
14
Sampling Rate (per Second)
50M
Data Interface
Parallel
Number Of Converters
1
Power Dissipation (max)
1.5W
Voltage Supply Source
Single Supply
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
48-TFSOP (0.240", 6.10mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTC1744CFW
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LTC1744CFW#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
APPLICATIO S I FOR ATIO
LTC1744
Input Range
The input range can be set based on the application. For
oversampled signal processing in which the input fre-
quency is low (<10MHz), the largest input range will
provide the best signal-to-noise performance while main-
taining excellent SFDR. For high input frequencies
(>10MHz), the 2V range will have the best SFDR perfor-
mance but the SNR will degrade by 3.5dB. See the Typical
Performance Characteristics section.
16
CLOCK
INPUT
0.1 F
ANALOG INPUT
50
U
1:4
U
ENC
ENC
LTC1744
W
V
V
DD
DD
2V BIAS
2V BIAS
Figure 7. Transformer Driven ENC/ENC
6k
6k
U
5V
Driving the Encode Inputs
The noise performance of the LTC1744 can depend on the
encode signal quality as much as on the analog input. The
ENC/ENC inputs are intended to be driven differentially,
primarily for noise immunity from common mode noise
sources. Each input is biased through a 6k resistor to a 2V
bias. The bias resistors set the DC operating point for
transformer coupled drive circuits and can set the logic
threshold for single-ended drive circuits.
BIAS
TO INTERNAL
ADC CIRCUITS
1744 F07
1744f