Datasheet
LTC2284
2284fa
2
TOP VIEW
65
UP PACKAGE
64-LEAD (9mm × 9mm) PLASTIC QFN
T
JMAX
= 125°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 OFB
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 OFA
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
PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution 14 Bits
Integral Linearity Error Differential Analog Input (Note 5) ±1.5 LSB
Differential Linearity Error Differential Analog Input ±0.6 LSB
Offset Error (Note 6) ● –12 ±212 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
Gain Matching External Reference ±0.3 %FS
Offset Matching ±2mV
Transition Noise SENSE = 1V 1.3 LSB
RMS
ABSOLUTE AXI U RATI GS
W
WW
U
PACKAGE/ORDER I FOR ATIO
UUW
OV
DD
= V
DD
(Notes 1, 2)
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
LTC2284C ............................................... 0°C to 70°C
LTC2284I.............................................–40°C to 85°C
Storage Temperature Range ..................–65°C to 125°C
ORDER PART
NUMBER
QFN PART*
MARKING
LTC2284UP
LTC2284CUP
LTC2284IUP
Consult LTC Marketing for parts specified with wider operating temperature ranges.
*The temperature grade is identified by a label on the shipping container.
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 4)
CO VERTER CHARACTERISTICS
U
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/