LTC2249 Linear Technology, LTC2249 Datasheet - Page 2

• Manufacturer Part Number: LTC2249
• Description: 80Msps Low Power 3V ADC
• Manufacturer: Linear Technology

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ABSOLUTE AXI U RATI GS
CO VERTER CHARACTERISTICS
A ALOG I PUT
LTC2249
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
Lead Temperature (Soldering, 10 sec).................. 300°C
SYMBOL
V
V
I
I
I
t
t
CMRR
2
temperature range, otherwise specifications are at T
PARAMETER
Resolution (No Missing Codes)
Integral Linearity Error
Differential Linearity Error
Offset Error
Gain Error
Offset Drift
Full-Scale Drift
Transition Noise
specifications are at T
IN
SENSE
MODE
AP
JITTER
IN
IN,CM
U
DD
LTC2249C ............................................... 0°C to 70°C
LTC2249I .............................................–40°C to 85°C
U
= V
DD
(Notes 1, 2)
PARAMETER
Analog Input Range (A
Analog Input Common Mode
Analog Input Leakage Current
SENSE Input Leakage
MODE Pin Leakage
Sample-and-Hold Acquisition Delay Time
Sample-and-Hold Acquisition Delay Time Jitter
Analog Input Common Mode Rejection Ratio
U
W
DD
A
) ................................................. 4V
= 25°C. (Note 4)
The
W W
●
IN
denotes the specifications which apply over the full operating temperature range, otherwise
+
–A
IN
–
)
U
CONDITIONS
Differential Analog Input (Note 5)
Differential Analog Input
(Note 6)
External Reference
Internal Reference
External Reference
SENSE = 1V
A
DD
DD
DD
= 25°C. (Note 4)
+ 0.3V)
+ 0.3V)
+ 0.3V)
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The
CONDITIONS
2.7V < V
Differential Input (Note 7)
0V < A
0V < SENSE < 1V
●
denotes the specifications which apply over the full operating
IN
+
PACKAGE/ORDER I FOR ATIO
DD
Consult LTC Marketing for parts specified with wider operating temperature ranges.
*The temperature grade is identified by a label on the shipping container.
, A
REFH
REFH
REFL
REFL
AIN
AIN
GND
< 3.4V (Note 7)
V
IN
DD
–
+
–
< V
1
2
3
4
5
6
7
8
32-LEAD (5mm × 5mm) PLASTIC QFN
DD
32 31 30 29 28 27 26 25
9 10 11 12
EXPOSED PAD IS GND (PIN 33)
T
MUST BE SOLDERED TO PCB
JMAX
= 125°C, θ
UH PACKAGE
TOP VIEW
33
13 14 15 16
JA
= 34°C/W
●
●
●
●
●
●
●
●
●
●
24
23
22
21
20
19
18
17
–2.5
MIN
MIN
–12
–1
–3
–3
–4
–1
14
U
1
D10
D9
D8
OV
OGND
D7
D6
D5
DD
1V to 2V
±0.5
±0.5
TYP
TYP
±10
±30
±15
1.5
0.2
80
±1
±2
0
1
ORDER PART
LTC2249CUH
LTC2249IUH
W
QFN PART*
MARKING
NUMBER
MAX
MAX
1.9
2.5
2249
12
1
3
3
4
1
LSB
ppm/°C
ppm/°C
UNITS
ps
UNITS
µV/°C
U
%FS
2249f
RMS
LSB
LSB
RMS
Bits
mV
µA
µA
µA
dB
ns
V
V