LTC1864L Datasheet, PDF (6/16 Pages) Linear Technology – μPower, 3V, 16-Bit, 150ksps 1- and 2-Channel ADCs in MSOP

LTC1864L/LTC1865L
TYPICAL PERFOR A CE CHARACTERISTICS
Change in Offset vs
Reference Voltage
20
15
10
f_S = 150kHz
T_A = 25°C
V_CC = 3.6V
5
0
–5
–10
–15
–20
0
1
2
3
4
REFERENCE VOLTAGE (V)
1864L/65L G10
Change in Gain Error vs
Temperature
5
4
V_CC = 2.7V
V_REF = 2.5V
3
2
1
0
–1
–2
–3
–4
–5
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1864L/65L G13
Change in Offset vs Temperature
5
4
V_CC = 2.7V
V_REF = 2.5V
3
2
1
0
–1
–2
–3
–4
–5
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
1864L/65L G11
Histogram of 4096 Conversions
of a DC Input Voltage
1200
1000
1040
800
648 ⁶⁸⁹
600
576
407
400
291
200
169
152
52
0 ⁰⁷
45 _{20 0 0}
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44
CODE
1864L/65L G14
Change in Gain Error vs
Reference Voltage
5
4
f_S = 150kHz
T_A = 25°C
3 ^VCC ^{= 3.6V}
2
1
0
–1
–2
–3
–4
–5
0
1
2
3
4
REFERENCE VOLTAGE (V)
1864L/65L G12
4096 Point FFT Nonaveraged
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
f_S = 125kHz
T_A = 25°C
V_CC = 3V
V_IN = 0.946045kHz
V_REF = 3V
5 10 15 20 25 30 35 40 45 50 55 60 65
INPUT FREQUENCY (kHz)
1864L/65L G15
SINAD vs Input Frequency
100
90
SNR
80
70
60
SINAD
50
40
30
20
10
0
1
f_S = 125kHz
T_A = 25°C
V_CC = 3V
V_IN = 0dB
V_REF = 3V
10
100
INPUT FREQUENCY (kHz)
1864L/65L G16
THD vs Input Frequency
0
f_S = 125kHz
–10 T_A = 25°C
–20
V_CC = 3V
V_IN = 0dB
–30 ^VREF ^{= 3V}
–40
–50
–60
–70
–80
–90
–100
1
10
100
INPUT FREQUENCY (kHz)
1864L/65L G17
SFDR vs Input Frequency
100
90
80
70
60
50
40
30
20
10
0
1
f_S = 125kHz
T_A = 25°C
V_CC = 3V
V_IN = 0dB
V_REF = 3V
10
100
INPUT FREQUENCY (kHz)
1864L/65L G18
6
sn18645L 18645Lfs