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LTC1860CS8 Datasheet(PDF) 6 Page - Linear Technology

Part # LTC1860CS8
Description  mPower, 12-Bit, 250ksps 1- and 2-Channel ADCs in MSOP
PDF  12 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1860CS8 Datasheet(HTML) 6 Page - Linear Technology

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6
LTC1860/LTC1861
18601f
TYPICAL PERFOR A CE CHARACTERISTICS
Change in Gain Error vs
Temperature
TEMPERATURE (
°C)
–50
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
50
75
1860/61 G13
–25
25
100
125
VCC = 5V
VREF = 5V
VREF (Pin 1): Reference Input. The reference input defines
the span of the A/D converter and must be kept free of
noise with respect to GND.
IN+, IN– (Pins 2, 3): Analog Inputs. These inputs must be
free of noise with respect to GND.
GND (Pin 4): Analog Ground. GND should be tied directly
to an analog ground plane.
CONV (Pin 5): Convert Input. A logic high on this input
starts the A/D conversion process. If the CONV input is left
PI FU CTIO S LTC1860
high after the A/D conversion is finished, the part powers
down. A logic low on this input enables the SDO pin,
allowing the data to be shifted out.
SDO (Pin 6): Digital Data Output. The A/D conversion
result is shifted out of this pin.
SCK (Pin 7): Shift Clock Input. This clock synchronizes the
serial data transfer.
VCC (Pin 8): Positive Supply. This supply must be kept
free of noise and ripple by bypassing directly to the
analog ground plane.
INPUT LEVEL (dB)
–40
1195 G20
–30
–35
–25
–15
–20
–5
–10
0
80
70
60
50
40
30
20
10
0
fIN = 10kHz
TA = 25°C
VCC = 5V
f (kHz)
060 70
90
0
–20
–40
–60
–80
–100
–120
10 20 30
80
40
1860/61 G15
100
50
fS = 204.1kHz
fIN = 99.5kHz
TA = 25°C
VCC = 5V
fIN (kHz)
100
90
80
70
60
50
40
30
20
10
0
1
100
1000
10000
1860/61 G16
10
T
A = 25°C
VCC = 5V
VIN = 0dB
SNR
SINAD
fIN (kHz)
1
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
10
100
1000
1860/61 G17
TA = 25°C
VCC = 5V
VIN = 0dB
fIN (kHz)
1
100
90
80
70
60
50
40
30
20
10
0
10
100
1000
1860/61 G18
TA = 25°C
VCC = 5V
VIN = 0dB
4096 Point FFT
Signal-to-(Noise + Distortion)
vs Input Level
Signal-to-(Noise + Distortion)
vs fIN
Total Harmonic Distortion
vs fIN
Spurious Free Dynamic Range
vs fIN



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