LTC2439-1 Datasheet, PDF (27/28 Pages) Linear Technology – 8-/16-Channel 16-Bit No Latency Delta-Sigma ADC

APPLICATIO S I FOR ATIO
30
RV^CE^CF^+==5V5V
REF ^– = GND
V_INCM = 2.5V
V_IN = 0V
F_O = EXTERNAL OSCILLATOR
15
T_A = 85°C
T_A = 25°C
420
V_CC
REF
= 5V
+ _{= 5V}
360 _REF – _{= GND}
IN⁺ = 3.75V
300 IN ^– = 1.25V
F_O = EXTERNAL OSCILLATOR
240
180
T_A = 85°C
120
T_A = 25°C
60
0
0 10 20 30 40 50 60 70 80 90 100
OUTPUT DATA RATE (READINGS/SEC)
24361 F24
Figure 24. Offset Error vs Output
Data Rate and Temperature
0
0 10 20 30 40 50 60 70 80 90 100
OUTPUT DATA RATE (READINGS/SEC)
24361 F25
Figure 25. +FS Error vs Output
Data Rate and Temperature
17
18
16
T_A = 25°C
15
T_A = 85°C
14 _RV^C_E^C_F+^==5V5V
REF ^– = GND
13
V_INCM = 2.5V
V_IN = 0V
F_O = EXTERNAL OSCILLATOR
RESOLUTION = LOG₂(V_REF/NOISE_RMS)
12
0 10 20 30 40 50 60 70 80 90 100
OUTPUT DATA RATE (READINGS/SEC)
24361 F27
Figure 27. Resolution (Noise_RMS ≤ 1LSB)
vs Output Data Rate and Temperature
16
T_A = 25°C
T_A = 85°C
14
12 _RVC_EC_F+^==5V5V
REF ^– = GND
10
V_INCM = 2.5V
–2.5V < V_IN < 2.5V
F_O = EXTERNAL OSCILLATOR
RESOLUTION = LOG₂(V_REF/INL_MAX)
8
0 10 20 30 40 50 60 70 80
90 100
OUTPUT DATA RATE (READINGS/SEC)
24361 F28
Figure 28. Resolution (INL_MAX ≤ 1LSB)
vs Output Data Rate and Temperature
LTC2439-1
0
60
T_A = 85°C
120
T_A = 25°C
180
240
300
V_CC
REF
= 5V
+ _{= 5V}
REF ^– = GND
IN⁺ = 1.25V
360 _IN – _{= 3.75V}
F_O = EXTERNAL OSCILLATOR
420
0 10 20 30 40 50 60 70 80 90 100
OUTPUT DATA RATE (READINGS/SEC)
24361 F26
Figure 26. –FS Error vs Output
Data Rate and Temperature
16
VR_CECF+==5VGND
V_INCM = 2.5V
V_IN = 0V
F_O = EXTERNAL OSCILLATOR
T_A = 25°C
8
V_REF = 5V
V_REF = 2.5V
0
0 10 20 30 40 50 60 70 80 90 100
OUTPUT DATA RATE (READINGS/SEC)
24361 F29
Figure 29. Offset Error vs Output
Data Rate and Reference Voltage
PACKAGE DESCRIPTIO
GN Package
.045 ±.005
28-Lead Plastic SSOP (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1641)
.386 – .393*
(9.804 – 9.982)
.033
28 27 26 25 24 23 22 21 20 19 18 17 1615
(0.838)
REF
.254 MIN
.150 – .165
.229 – .244
(5.817 – 6.198)
.150 – .157**
(3.810 – 3.988)
.0165 ± .0015
.0250 TYP
RECOMMENDED SOLDER PAD LAYOUT
NOTE:
1. CONTROLLING DIMENSION: INCHES
2.
DIMENSIONS
ARE
IN
INCHES
(MILLIMETERS)
3. DRAWING NOT TO SCALE
.0075 – .0098
(0.191 – 0.249)
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
.016 – .050
(0.406 – 1.270)
.015 ± .004
(0.38 ± 0.10)
× 45°
0° – 8° TYP
1 2 3 4 5 6 7 8 9 10 11 12 13 14
.053 – .069
(1.351 – 1.748)
.004 – .009
(0.102 – 0.249)
.008 – .012
(0.203 – 0.305)
.0250
(0.635)
BSC
GN28 (SSOP) 0502
24391f
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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