Datasheet

6
LTC1609
1609fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Typical INL Curve
CODE
0
INL (LSB)
0
0.5
1.0
65535
1609 G04
–0.5
–1.0
–2.0
16384
32768
49152
–1.5
2.0
1.5
CODE
0
DNL (LSB)
0
0.5
1.0
65535
1609 G05
–0.5
–1.0
–2.0
16384
32768
49152
–1.5
2.0
1.5
FREQUENCY (kHz)
0
–60
–40
0
75
1609 G06
–80
–100
25 50 100
–120
–130
–20
MAGNITUDE (dB)
f
SAMPLE
= 200kHz
f
IN
= 1kHz
SINAD = 87.2dB
THD = –100.1dB
Typical DNL Curve
Nonaveraged 4096 Point FFT Plot
SINAD vs Input Frequency THD vs Input Frequency
FREQUENCY (kHz)
60
75
70
65
95
90
85
80
1609 G07
SINAD (dB)
1
100
10
FREQUENCY (kHz)
–110
–80
–90
–100
–40
–50
–60
–70
1609 G08
THD (dB)
1
100
10
Supply Current vs Supply Voltage
Change in CAP Voltage
vs Load Current
SUPPLY VOLTAGE (V)
4.5
SUPPLY CURRENT (mA)
13.0
13.5
14.0
5.5
1609 G01
12.5
12.0
11.0
4.75
5.0
5.25
11.5
15.0
14.5
f
SAMPLE
= 200kHz
LOAD CURRENT (mA)
–14
–0.05
CHANGE IN CAP VOLTAGE (V)
–0.04
–0.02
–0.01
0
0.05
0.02
–10
–6
–4 4
1609 G02
–0.03
0.03
0.04
0.01
–12 –8
–2
0
2
RIPPLE FREQUENCY (Hz)
110
–30
POWER SUPPLY REJECTION (dB)
–20
–10
0
100 10k1k 1M100k
1609 G03
–40
–50
–60
–70
f
SAMPLE
= 200kHz
Power Supply Rejection
vs Ripple Frequency