Datasheet
LTC2285
2
2285fb
PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
DD
) ..................................................4V
Digital Output Ground Voltage (OGND) ........ –0.3V to 1V
Analog Input Voltage (Note 3) .......–0.3V to (V
DD
+ 0.3V)
Digital Input Voltage ......................–0.3V to (V
DD
+ 0.3V)
Digital Output Voltage ................ –0.3V to (OV
DD
+ 0.3V)
Power Dissipation .............................................1500mW
Operating Temperature Range
LTC2285C ................................................ 0°C to 70°C
LTC2285I.............................................. –40°C to 85°C
Storage Temperature Range ................... –65°C to 150°C
OV
DD
= V
DD
(Notes 1, 2)
TOP VIEW
65
UP PACKAGE
64-LEAD (9mm × 9mm) PLASTIC QFN
T
JMAX
= 150°C, θ
JA
= 20°C/W
EXPOSED PAD (PIN 65) IS GND AND MUST BE SOLDERED TO PCB
A
INA
+
1
A
INA
–
2
REFHA 3
REFHA 4
REFLA 5
REFLA 6
V
DD
7
CLKA 8
CLKB 9
V
DD
10
REFLB 11
REFLB 12
REFHB 13
REFHB 14
A
INB
–
15
A
INB
+
16
48 DA7
47 DA6
46 DA5
45 DA4
44 DA3
43 DA2
42 DA1
41 DA0
40 CLKOUT
39 DB13
38 DB12
37 DB11
36 DB10
35 DB9
34 DB8
33 DB7
64 GND
63 V
DD
62 SENSEA
61 VCMA
60 MODE
59 SHDNA
58 OEA
57 OF
56 DA13
55 DA12
54 DA11
53 DA10
52 DA9
51 DA8
50 OGND
49 OV
DD
GND 17
V
DD
18
SENSEB 19
VCMB 20
MUX 21
SHDNB 22
OEB 23
DB0 24
DB1 25
DB2 26
DB3 27
DB4 28
DB5 29
DB6 30
OGND 31
OV
DD
32
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2285CUP#PBF LTC2285CUP#TRPBF LTC2285UP 64-Lead (9mm × 9mm) Plastic QFN 0°C to 70°C
LTC2285IUP#PBF LTC2285IUP#TRPBF LTC2285UP 64-Lead (9mm × 9mm) Plastic QFN –40°C to 85°C
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC2285CUP LTC2285CUP#TR LTC2285UP 64-Lead (9mm × 9mm) Plastic QFN 0°C to 70°C
LTC2285IUP LTC2285IUP#TR LTC2285UP 64-Lead (9mm × 9mm) Plastic QFN –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)
●
14 Bits
Integral Linearity Error Differential Analog Input (Note 5)
●
±1.5 LSB
Differential Linearity Error Differential Analog Input
●
–1 ±0.6 1.1 LSB
Offset Error (Note 6)
●
–12 ±2 12 mV
Gain Error External Reference
●
–2.5 ±0.5 2.5 %FS
Offset Drift ±10 µV/°C
Full-Scale Drift Internal Reference ±30 ppm/°C
External Reference ±5 ppm/°C
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. (Note 4)
CONVERTER CHARACTERISTICS