LTC1608AIG View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1608AIG' PDF : 20 Pages View PDF
APPLICATIO S I FOR ATIO
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
1k
THD
3RD
2ND
10k
100k
INPUT FREQUENCY (Hz)
1M
1608 F21
Figure 21. Distortion vs Input Frequency
0
fSAMPLE = 500kHz
–20
fIN1 = 96.56kHz
fIN2 = 99.98kHz
–40
–60
–80
–100
–120
–140
0
50 100 150 200 250
FREQUENCY (kHz)
1608 F22
Figure 22. Intermodulation Distortion Plot
LTC1608
(fa ± fb). If the two input sine waves are equal in
magnitude, the value (in decibels) of the 2nd order IMD
products can be expressed by the following formula:
( ) IMD fa ± fb = 20Log Amplitude at (fa ± fb)
Amplitude at fa
Peak Harmonic or Spurious Noise
The peak harmonic or spurious noise is the largest spec-
tral component excluding the input signal and DC. This
value is expressed in decibels relative to the RMS value of
a full-scale input signal.
Full-Power and Full-Linear Bandwidth
The full-power bandwidth is that input frequency at which
the amplitude of the reconstructed fundamental is
reduced by 3dB for a full-scale input signal.
The full-linear bandwidth is the input frequency at which
the S/(N + D) has dropped to 84dB (13.66 effective bits).
The LTC1608 has been designed to optimize input band-
width, allowing the ADC to undersample input signals with
frequencies above the converter’s Nyquist Frequency. The
noise floor stays very low at high frequencies; S/(N + D)
becomes dominated by distortion at frequencies far
beyond Nyquist.
PACKAGE DESCRIPTIO
5.20 – 5.38**
(.205 – .212)
G Package
36-Lead Plastic SSOP (5.3mm)
(Reference LTC DWG # 05-08-1640)
1.73 – 1.99
(.068 – .078)
12.67 – 12.93*
(.499 – .509)
36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19
0° – 8°
.13 – .22
(.005 – .009)
.55 – .95
(.022 – .037)
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
2.
DIMENSIONS
ARE
IN
MILLIMETERS
(INCHES)
.65
(.0256)
BSC
.25 – .38
(.010 – .015)
3. DRAWING NOT TO SCALE
*DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED .152mm (.006") PER SIDE
**DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED .254mm (.010") PER SIDE
.05 – .21
(.002 – .008)
7.65 – 7.90
(.301 – .311)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 G36 SSOP 0501
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 represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
19
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