Техническая Спецификация для Linear Technology DC956A - LTC2485 24-bit Delta-Sigma ADC demo board (req DC590) DC956A DC956A

Модели
DC956A
Скачать
Страница из 40
LTC2485
2
2485fc
 PIN CONFIGURATION
 ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
CC
) to GND ......................  – 0.3V to 6V
Analog Input Voltage to GND ....... –0.3V to (V
CC
 + 0.3V)
Reference Input Voltage to GND .. –0.3V to (V
CC
 + 0.3V)
Digital Input Voltage to GND .......  – 0.3V to (V
CC
 + 0.3V)
Digital Output Voltage to GND ...... –0.3V to (V
CC
 + 0.3V)
Operating Temperature Range
LTC2485C .................................................... 0°C to 70°C 
LTC2485I  ................................................– 40°C to 85°C 
Storage Temperature Range .................. –65°C to 125°C
(Notes 1, 2)
TOP VIEW
11
DD PACKAGE
10-LEAD (3mm 
s 3mm) PLASTIC DFN
10
9
6
7
8
4
5
3
2
1
CA0/f
0
CA1
GND
SDA
SCL
REF
+
V
CC
REF
IN
+
IN
T
JMAX
 = 125°C, θ
JA
 = 43°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
 ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2485CDD#PBF
LTC2485CDD#TRPBF
LBST
10-Lead (3mm × 3mm) Plastic DFN
0°C to 70°C
LTC2485IDD#PBF
LTC2485IDD#TRPBF
LBST
10-Lead (3mm × 3mm) Plastic DFN
–40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
For more information on lead free part marking, go to: 
http://www.linear.com/leadfree/
 
For more information on tape and reel specifi cations, go to: 
http://www.linear.com/tapeandreel/
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Resolution (No Missing Codes)
0.1 ≤ V
REF
 ≤ V
CC
, –FS ≤ V
IN
 ≤ +FS (Note 5)
24
Bits
Integral Nonlinearity
5V ≤ V
CC
 ≤ 5.5V, V
REF
 = 5V, V
IN(CM)
 = 2.5V (Note 6)
2.7V ≤ V
CC
 ≤ 5.5V, V
REF
 = 2.5V, V
IN(CM)
 = 1.25V (Note 6)
2
1
10
ppm of V
REF
ppm of V
REF
Offset Error
2.5V ≤ V
REF
 ≤ V
CC
, GND ≤ IN
+
 = IN
 ≤ V
CC
 (Note 13)
0.5
2.5
μV
Offset Error Drift
2.5V ≤ V
REF
 ≤ V
CC
, GND ≤ IN
+
 = IN
 ≤ V
CC
10
nV/°C
Positive Full-Scale Error
2.5V ≤ V
REF
 ≤ V
CC
, IN
+
 = 0.75V
REF
, IN
 = 0.25V
REF
25
ppm of V
REF
Positive Full-Scale Error Drift
2.5V ≤ V
REF
 ≤ V
CC
, IN
+
 = 0.75V
REF
, IN
 = 0.25V
REF
0.1
ppm of V
REF
/°C
Negative Full-Scale Error
2.5V ≤ V
REF
 ≤ V
CC
, IN
 = 0.75V
REF
, IN
+
 = 0.25V
REF
25
ppm of V
REF
Negative Full-Scale Error Drift
2.5V ≤ V
REF
 ≤ V
CC
, IN
 = 0.75V
REF
, IN
+
 = 0.25V
REF
0.1
ppm of V
REF
/°C
Total Unadjusted Error
5V ≤ V
CC
 ≤ 5.5V, V
REF
 = 2.5V, V
IN(CM)
 = 1.25V (Note 6)
5V ≤ V
CC
 ≤ 5.5V, V
REF
 = 5V, V
IN(CM)
 = 2.5V (Note 6)
2.7V ≤ V
CC
 ≤ 5.5V, V
REF
 = 2.5V, V
IN(CM)
 = 1.25V (Note 6)
15
15
15
ppm of V
REF
ppm of V
REF
ppm of V
REF
Output Noise
5V ≤ V
CC
 ≤ 5.5V, V
REF
 = 5V, GND ≤ IN
 = IN
+
 ≤ V
CC
 (Note 12)
0.6
μV
RMS
Internal PTAT Signal
T
A
 = 27°C
420
mV
Internal PTAT Temperature Coeffi cient
1.4
mV/°C
 ELECTRICAL CHARACTERISTICS (NORMAL SPEED)
 
The 
l
 denotes the specifi cations which 
apply over the full operating temperature range, otherwise specifi cations are at T
A
 = 25°C. (Notes 3, 4)