LTC2485 LINER [Linear Technology], LTC2485 Datasheet - Page 2

• Manufacturer Part Number: LTC2485
• Description: 24-Bit ?? ADC with Easy Drive Input Current Cancellation and I2C Interface
• Manufacturer: LINER [Linear Technology]

ABSOLUTE AXI U RATI GS
LTC2485
ELECTRICAL CHARACTERISTICS ( OR AL SPEED)
(Notes 1, 2)
Supply Voltage (V
Analog Input Voltage to GND ....... – 0.3V to (V
Reference Input Voltage to GND .. – 0.3V to (V
Digital Input Voltage to GND ........ – 0.3V to (V
Digital Output Voltage to GND ..... – 0.3V to (V
Operating Temperature Range
LTC2485C ................................................... 0°C to 70°C
LTC2485I ................................................ – 40°C to 85°C
Storage Temperature Range ................ – 65°C to 125°C
2
PARAMETER
Resolution (No Missing Codes)
Integral Nonlinearity
Offset Error
Offset Error Drift
Positive Full-Scale Error
Positive Full-Scale Error Drift
Negative Full-Scale Error
Negative Full-Scale Error Drift
Total Unadjusted Error
Output Noise
Internal PTAT Signal
Internal PTAT Temperature Coefficient
apply over the full operating temperature range, otherwise specifications are at T
W
CC
) to GND ...................... – 0.3V to 6V
W W
CONDITIONS
0.1 ≤ V
5V ≤ V
2.7V ≤ V
2.5V ≤ V
2.5V ≤ V
2.5V ≤ V
2.5V ≤ V
2.5V ≤ V
2.5V ≤ V
5V ≤ V
5V ≤ V
2.7V ≤ V
5V ≤ V
T
A
= 27°C
CC
CC
CC
CC
REF
CC
REF
REF
REF
REF
REF
REF
CC
≤ 5.5V, V
≤ 5.5V, V
≤ 5.5V, V
≤ 5.5V, V
≤ V
≤ 5.5V, V
≤ 5.5V, V
≤ V
≤ V
≤ V
≤ V
≤ V
≤ V
U
CC
CC
CC
CC
CC
CC
CC
, –FS ≤ V
CC
CC
CC
CC
, GND ≤ IN
, GND ≤ IN
, IN
, IN
, IN
, IN
REF
REF
REF
REF
REF
REF
+
+
–
–
+ 0.3V)
+ 0.3V)
+ 0.3V)
+ 0.3V)
= 5V, V
= 2.5V, V
= 5V, V
= 5V, GND ≤ IN
= 0.75V
= 0.75V
= 0.75V
= 0.75V
U
= 2.5V, V
= 2.5V, V
IN
≤ +FS (Note 5)
+
+
IN(CM)
IN(CM)
= IN
= IN
REF
REF
REF
REF
IN(CM)
W
IN(CM)
IN(CM)
, IN
, IN
, IN
, IN
–
–
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
*The temperature grade is identified by a label on the shipping container.
= 2.5V (Note 6)
≤ V
≤ V
= 2.5V (Note 6)
–
–
+
+
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
–
= 1.25V (Note 6)
= 0.25V
= 0.25V
= 0.25V
= 0.25V
= IN
ORDER PART NUMBER
CC
CC
= 1.25V (Note 6)
= 1.25V (Note 6)
(Note 13)
+
≤ V
REF
REF
REF
REF
LTC2485CDD
LTC2485IDD
CC
A
(Note 12)
= 25°C. (Notes 3, 4)
REF
REF
10-LEAD (3mm × 3mm) PLASTIC DFN
V
IN
IN
CC
+
–
+
–
EXPOSED PAD (PIN 11) IS GND
http://www.linear.com/leadfree/
T
MUST BE SOLDERED TO PCB
JMAX
The
1
2
3
4
5
●
●
●
●
●
= 125°C, θ
DD PACKAGE
●
TOP VIEW
MIN
denotes the specifications which
24
11
JA
U
= 43°C/ W
DD PART MARKING*
TYP
420
0.5
0.1
0.1
0.6
1.4
10
10
15
15
15
9
8
7
6
2
1
CA0/F
CA1
GND
SDA
SCL
0
LBST
MAX
W
2.5
10
25
25
ppm of V
ppm of V
ppm of V
ppm of V
ppm of V
ppm of V
ppm of V
V
V
ppm of
ppm of
U
µV
UNITS
mV/°C
REF
REF
2485fa
nV/°C
RMS
Bits
mV
REF
REF
REF
/°C
REF
/°C
REF
REF
REF
µV