LTC2238 Linear, LTC2238 Datasheet - Page 2

• Manufacturer Part Number: LTC2238
• Description: (LTC2236 - LTC2238) LOW POWER 3V ADC
• Manufacturer: Linear

CO VERTER CHARACTERISTICS
ABSOLUTE AXI U RATI GS
LTC2238/LTC2237/LTC2236
OV
Supply Voltage (V
Digital Output Ground Voltage (OGND) ....... –0.3V to 1V
Analog Input Voltage (Note 3) ..... –0.3V to (V
Digital Input Voltage .................... –0.3V to (V
Digital Output Voltage ................ –0.3V to (OV
Power Dissipation ............................................ 1500mW
Operating Temperature Range
Storage Temperature Range ..................–65°C to 125°C
temperature range, otherwise specifications are at T
2
PARAMETER
Resolution
(No Missing Codes)
Integral
Linearity Error
Differential
Linearity Error
Offset Error
Gain Error
Offset Drift
Full-Scale Drift
Transition Noise
DD
LTC2238C, LTC2237C, LTC2236C ........... 0°C to 70°C
LTC2238I, LTC2237I, LTC2236I ..........–40°C to 85°C
U
= V
DD
(Notes 1, 2)
W
DD
CONDITIONS
Differential Analog Input
(Note 5)
Differential Analog Input
(Note 6)
External Reference
Internal Reference
External Reference
SENSE = 1V
) ................................................. 4V
W W
U
A
DD
DD
DD
●
●
●
●
●
= 25°C. (Note 4)
+ 0.3V)
+ 0.3V)
+ 0.3V)
–0.5
–0.5
–2.5
MIN
–12
The
10
●
LTC2238
denotes the specifications which apply over the full operating
±0.05
±0.1
±0.5
0.07
TYP
±10
±30
±2
±5
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.
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
ORDER PART NUMBER
MAX
0.5
0.5
2.5
12
LTC2238CUH
LTC2238IUH
LTC2237CUH
LTC2237IUH
LTC2236CUH
LTC2236IUH
–0.5
–0.5
–2.5
MIN
–12
10
REFH
REFH
REFL
REFL
AIN
AIN
GND
V
DD
+
–
LTC2237
±0.05
1
2
3
4
5
6
7
8
±0.1
±0.5
0.07
TYP
32-LEAD (5mm × 5mm) PLASTIC QFN
±10
±30
±2
±5
EXPOSED PAD (PIN 33) IS GND
32 31 30 29 28 27 26 25
9 10 11 12
MUST BE SOLDERED TO PCB
http://www.linear.com/leadfree/
T
JMAX
= 125°C, θ
MAX
UH PACKAGE
0.5
0.5
2.5
12
TOP VIEW
33
13 14 15 16
JA
–0.5
–0.5
–2.5
MIN
–12
QFN PART MARKING*
= 34°C/W
10
U
LTC2236
±0.05
±0.1
±0.5
0.07
24
23
22
21
20
19
18
17
TYP
±10
±30
±2
±5
2238
2238
2237
2237
2236
2236
D6
D5
D4
OV
OGND
D3
D2
D1
W
DD
MAX
0.5
0.5
2.5
12
LSB
ppm/°C
ppm/°C
223876fa
UNITS
µV/°C
U
%FS
LSB
LSB
RMS
Bits
mV