LTC2281
2
2281fb
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VDD) ..................................................4V
Digital Output Ground Voltage (OGND) ........ –0.3V to 1V
Analog Input Voltage (Note 3).......–0.3V to (VDD + 0.3V)
Digital Input Voltage......................–0.3V to (VDD + 0.3V)
Digital Output Voltage ................ –0.3V to (OVDD + 0.3V)
Power Dissipation .............................................1500mW
Operating Temperature Range
LTC2281C ................................................ 0°C to 70°C
LTC2281I.............................................. –40°C to 85°C
Storage Temperature Range................... –65°C to 150°C
OVDD = VDD (Notes 1, 2)
TOP VIEW
65
UP PACKAGE
64-LEAD (9mm
9mm) PLASTIC QFN
AINA
+ 1
AINA
– 2
REFHA 3
REFHA 4
REFLA 5
REFLA 6
VDD 7
CLKA 8
CLKB 9
VDD 10
REFLB 11
REFLB 12
REFHB 13
REFHB 14
AINB
– 15
AINB
+ 16
48 DA3
47 DA2
46 DA1
45 DA0
44 NC
43 NC
42 NC
41 NC
40 CLKOUT
39 DB9
38 DB8
37 DB7
36 DB6
35 DB5
34 DB4
33 DB3
64
GND
63
V
DD
62
SENSEA
61
VCMA
60
MODE
59
SHDNA
58
OEA
57
OF
56
DA9
55
DA8
54
DA7
53
DA6
52
DA5
51
DA4
50
OGND
49
OV
DD
GND
17
V
DD
18
SENSEB
19
VCMB
20
MUX
21
SHDNB
22
OEB
23
NC
24
NC
25
NC
26
NC
27
DB0
28
DB1
29
DB2
30
OGND
31
OV
DD
32
TJMAX = 150°C, θJA = 20°C/W
EXPOSED PAD (PIN 65) IS GND AND MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2281CUP#PBF
LTC2281CUP#TRPBF
LTC2281UP
64-Lead (9mm × 9mm) Plastic QFN
0°C to 70°C
LTC2281IUP#PBF
LTC2281IUP#TRPBF
LTC2281UP
64-Lead (9mm × 9mm) Plastic QFN
–40°C to 85°C
LEAD BASED FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2281CUP
LTC2281CUP#TR
LTC2281UP
64-Lead (9mm × 9mm) Plastic QFN
0°C to 70°C
LTC2281IUP
LTC2281IUP#TR
LTC2281UP
64-Lead (9mm × 9mm) Plastic QFN
–40°C to 85°C
Consult LTC Marketing for parts specied with wider operating temperature ranges. *The temperature grade is identied by a label on the shipping container.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Resolution (No Missing Codes)
●
10
Bits
Integral Linearity Error
Differential Analog Input (Note 5)
●
–0.7
±0.1
0.7
LSB
Differential Linearity Error
Differential Analog Input
●
–0.7
±0.1
0.7
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 specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. (Note 4)
CONVERTER CHARACTERISTICS