Datasheet

LTC2378-18
7
237818f
SNR, SINAD vs Temperature,
f
IN
= 2kHz
THD, Harmonics vs Temperature,
f
IN
= 2kHz
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current vs Temperature
Shutdown Current vs Temperature CMRR vs Input Frequency
Reference Current
vs Reference Voltage
INL/DNL vs Temperature
Full-Scale Error vs Temperature Offset Error vs Temperature
T
A
= 25°C, V
DD
= 2.5V, OV
DD
= 2.5V, V
CM
= 2.5V,
REF = 5V, f
SMPL
= 1Msps, unless otherwise noted.
FREQUENCY (kHz)
0 200100 300 400 500
70
CMRR (dB)
85
80
75
100
95
90
237818 G17
0
REFERENCE CURRENT (mA)
0.2
0.1
0.7
0.6
0.5
0.4
0.3
237818 G18
REFERENCE VOLTAGE (V)
2.5 3.0 3.5 4.0 4.5 5.0
TEMPERATURE (°C)
SNR, SINAD (dBFS)
105.0
104.5
104.0
103.5
237818 G10
100.0
100.5
101.0
101.5
102.0
102.5
103.0
–55 –35 –15 5 25 45 65 85 105 125
SINAD
SNR
TEMPERATURE (°C)
HARMONICS, THD (dBFS)
–115
237818 G11
–140
–135
–130
–125
–120
–55 –35 –15 5 25 6545 85 105 125
THD
2ND
3RD
TEMPERATURE (°C)
INL/DNL ERROR (LSB)
1.0
237818 G12
–1.0
–0.5
0
0.5
–55 25 45 65–35 –15 5 85 105 125
MAX INL
MAX DNL
MIN DNL
MIN INL
TEMPERATURE (°C)
FULL-SCALE ERROR (LSB)
8
237818 G13
–8
0
4
2
6
–4
–2
–6
–55 –35 25 45 65–15 5 85 105 125
–FS
+FS
TEMPERATURE (°C)
POWER SUPPLY CURRENT (mA)
6
237818 G15
0
1
2
3
4
5
–55 –35 –15 5 25 45 65 85 105 125
I
VDD
I
REF
I
OVDD
TEMPERATURE (°C)
OFFSET ERROR (LSB)
2.0
1.5
1.0
0.5
237818 G14
–2.0
–1.0
0
–0.5
–1.5
–55 –35 –15 255 45 65 85 105 125
TEMPERATURE (°C)
POWER-DOWN CURRENT (µA)
45
40
35
30
237818 G16
0
5
10
15
20
25
–50 –25 0 25 50 75 100 125
I
VDD
+ I
OVDD
+ I
REF