Datasheet

LTC2293/LTC2292/LTC2291
2
229321fa
TOP VIEW
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 DA5
47 DA4
46 DA3
45 DA2
44 DA1
43 DA0
42 NC
41 NC
40 OFB
39 DB11
38 DB10
37 DB9
36 DB8
35 DB7
34 DB6
33 DB5
65
64 GND 63 V
DD
62 SENSEA 61 VCMA 60 MODE 59 SHDNA 58 OEA 57 OFA 56 DA11 55 DA10 54 DA9 53 DA8 52 DA7 51 DA6 50 OGND 49 OV
DD
GND
17
V
DD
18
SENSEB
19
VCMB
20
MUX 21
SHDNB 22
OEB 23
NC 24 NC 25
DB0 26 DB1 27 DB2 28 DB3 29 DB4 30
OGND 31
OV
DD
32
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)
ORDER PART
NUMBER
QFN PART*
MARKING
LTC2293UP
LTC2293UP
LTC2292UP
LTC2292UP
LTC2291UP
LTC2291UP
LTC2293CUP
LTC2293IUP
LTC2292CUP
LTC2292IUP
LTC2291CUP
LTC2291IUP
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)
LTC2293 LTC2292 LTC2291
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
Resolution ● 12 12 12 Bits
(No Missing Codes)
Integral Linearity Error Differential Analog Input (Note 5) ● –1.4 ±0.3 1.4 –1.4 ±0.3 1.4 –1.3 ±0.3 1.3 LSB
Differential Differential Analog Input ● –0.8 ±0.15 0.8 –0.7 ±0.15 0.7 –0.7 ±0.15 0.7 LSB
Linearity Error
Offset Error (Note 6) ● –12 ±212–12±212–12±212 mV
Gain Error External Reference ● –2.5 ±0.5 2.5 –2.5 ±0.5 2.5 –2.5 ±0.5 2.5 %FS
Offset Drift ±10 ±10 ±10 µV/°C
Full-Scale Drift Internal Reference ±30 ±30 ±30 ppm/°C
External Reference ±5 ±5 ±5 ppm/°C
Gain Matching External Reference ±0.3 ±0.3 ±0.3 %FS
Offset Matching ±2 ±2 ±2mV
Transition Noise SENSE = 1V 0.25 0.25 0.25 LSB
RMS
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/
Power Dissipation............................................ 1500mW
Operating Temperature Range
LTC2293C, LTC2292C, LTC2291C........... 0°C to 70°C
LTC2293I, LTC2292I, LTC2291I ..........–40°C to 85°C
Storage Temperature Range ..................–65°C to 125°C