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SPT7851 Folha de dados(PDF) 4 Page - Cadeka Microcircuits LLC.

Nome de Peças SPT7851
Descrição Electrónicos  10-Bit, 20 MSPS, 79mW Analog-to-DIgital Converter
PDF  9 Pages
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Fabricante Electrônico  CADEKA [Cadeka Microcircuits LLC.]
Página de início  http://www.cadeka.com
Logo CADEKA - Cadeka Microcircuits LLC.

SPT7851 Folha de dados(HTML) 4 Page - Cadeka Microcircuits LLC.

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REV. 1B October 2003
DATA SHEET
SPT7851
Typical Performance Characteristics
(TA = TMIN–TMAX, VDD1 = VDD2 = VDD3 = 3.3V, VREF– = 1.0V, VREF+ = 2.0V, Common Mode Voltage = 1.65, ƒCLK = 20 MSPS,
Bias1 = 90µA, Bias2 = 9.5µA, Differential Input, Duty Cycle = 50%; unless otherwise noted)
THD, SNR, SINAD vs. Temperature
70
64
60
56
62
68
85
Temperature ( °C)
58
-40
-25
0
25
50
70
66
80
60
40
20
50
70
30
THD, SNR, SINAD vs. Input Frequency
Input Frequency (MHz)
100
102
101
THD
SNR
SINAD
80
60
40
20
50
70
30
THD, SNR, SINAD vs. Sample Rate
Sample Rate (MSPS)
100
102
101
THD
SINAD
SNR
NOTE: Bias1 and Bias2 currents
optimized for each sample rate
150
100
50
0
75
125
25
Power Dissipation vs. Sample Rate
Sample Rate (MSPS)
100
102
101
NOTE: Bias1 and Bias2 currents
optimized for each sample rate
THD
SNR
SINAD
IBIAS1 (µA)
3.4
2.0
3.2
30
0
Bias1 Voltage vs. Bias1 Current
60
90
120
150
180
IBias1
VBias1
30
2.19
60
2.53
90
2.79
120
3
150
3.22
3.0
2.8
2.6
2.4
2.2
IBIAS2 (µA)
0.90
0.85
3
0
Bias2 Voltage vs. Bias2 Current
69
12
15
18
IBias2
VBias2
3
0.6975
6
0.7535
9
0.796
12
0.8295
15
0.8595
0.80
0.75
0.70
0.65
0.60



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