LTC5587 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC5587' PDF : 20 Pages View PDF
LTC5587
TYPICAL PERFORMANCE CHARACTERISTICS VCC = VDD = OVDD = 3.3V, VREF = 1.8V, EN = 3.3V,
fSMPL = fSMPL(MAX) and fSCK = fSCK(MAX) unless otherwise noted. VOUT = ADC Output (LSB) • 1.8/4096. Test circuit is shown in Figure 1.
Output Voltage vs Frequency
2.0
TA = 25°C
1.8
10MHz
1.6
450MHz
1.4
880MHz
2.14GHz
1.2
2.6GHz
3.5GHz
1.0
5.8GHz
0.8
0.6
0.4
0.2
0
–40 –35 –30 –25 –20 –15 –10 –5 0
RF INPUT POWER (dBm)
5 10
5587 G01
Output Voltage and Linearity
Error at 450MHz
2.0
2.5
25°C
1.8
85°C
2.0
1.6
– 40°C
1.5
1.4
1.0
1.2
0.5
1.0
0
0.8
–0.5
0.6
–1.0
0.4
–1.5
0.2
–2.0
0
–40 –35 –30 –25 –20 –15 –10 –5 0
RF INPUT POWER (dBm)
–2.5
5 10
5587 G04
Output Voltage and Linearity
Error at 880MHz
2.0
2.5
25°C
1.8
85°C
2.0
1.6
– 40°C
1.5
1.4
1.0
1.2
0.5
1.0
0
0.8
–0.5
0.6
–1.0
0.4
–1.5
0.2
–2.0
0
–40 –35 –30 –25 –20 –15 –10 –5 0
RF INPUT POWER (dBm)
–2.5
5 10
5587 G07
6
Linearity Error vs Frequency
3
TA = 25°C
2
RF Input Return Loss vs Frequency
0
TA = 25°C
–5
1
0
10MHz
–1
450MHz
880MHz
2.14GHz
–2
2.6GHz
3.5GHz
5.8GHz
–3
–40 –35 –30 –25 –20 –15 –10 –5 0
RF INPUT POWER (dBm)
5 10
5587 G02
–10
–15
–20
–25
–30
0
L1= 3.3nH,C1=1.8pF
L1= 1.5nH,C1=1.8pF
L1= 0, C1=1.5pF
L1= 0, C1=0.7pF
L1= 0, C1=0
1
2
3
4
5
6
FREQUENCY (GHz)
5587 G03
Output Voltage Temperature
Variation from 25°C at 450MHz
3
2
1
85°C
0
–40°C
–1
Linearity Error vs RF Input Power
450MHz Modulated Waveforms
3
TA = 25°C
2
CW
TETRA
CDMA 4C
1
0
–1
–2
–2
–3
–40 –35 –30 –25 –20 –15 –10 –5 0
RF INPUT POWER (dBm)
5 10
5587 G05
–3
–35 –30 –25 –20 –15 –10 –5 0
RF INPUT POWER (dBm)
5 10
5587 G06
Output Voltage Temperature
Variation from 25°C at 880MHz
3
2
1
85°C
0
–40°C
–1
Linearity Error vs RF Input Power
880MHz Modulated Waveforms
3
TA = 25°C
2
CW
EDGE
1
0
–1
–2
–2
–3
–40 –35 –30 –25 –20 –15 –10 –5 0
RF INPUT POWER (dBm)
5 10
5587 G08
–3
–35 –30 –25 –20 –15 –10 –5 0
RF INPUT POWER (dBm)
5 10
5587 G09
5587f
Share Link: 
