LTC2255_15 Datasheet, PDF (2/24 Pages) Linear Technology – 14-Bit, 125/105Msps Low Power 3V ADCs

LTC2255/LTC2254
ABSOLUTE AXI U RATI GS
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
LTC2255C, LTC2254C ............................. 0°C to 70°C
LTC2255I, LTC2254I ...........................–40°C to 85°C
Storage Temperature Range ..................–65°C to 125°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
ORDER PART
NUMBER
32 31 30 29 28 27 26 25
AIN⁺ 1
24 D10
AIN^– 2
23 D9
REFH 3
22 D8
REFH 4
REFL 5
33
21 OV_DD
20 OGND
REFL 6
19 D7
V_DD 7
GND 8
18 D6
17 D5
9 10 11 12 13 14 15 16
UH PACKAGE
32-LEAD (5mm × 5mm) PLASTIC QFN
T_JMAX = 125°C, θ_JA = 34°C/W
EXPOSED PAD (PIN 33) IS GND
MUST BE SOLDERED TO PCB
LTC2255CUH
LTC2255IUH
LTC2254CUH
LTC2254IUH
QFN PART*
MARKING
2255
2254
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/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
*The temperature grade is identified by a label on the shipping container.
CO VERTER CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. (Note 4)
PARAMETER
Resolution (No Missing Codes)
Integral Linearity Error
Differential Linearity Error
Offset Error
Gain Error
Offset Drift
Full-Scale Drift
Transition Noise
CONDITIONS
Differential Analog Input (Note 5)
Differential Analog Input
(Note 6)
External Reference
Internal Reference
External Reference
SENSE = 1V
LTC2255
MIN TYP MAX
● 14
● –5 ±1
5
● –1 ±0.5 1
● –12 ±2 12
● –2.5 ±0.5 2.5
±10
±30
±5
1.3
LTC2254
MIN TYP MAX
14
–5.5 ±1 5.5
–1 ±0.5 1
–12 ±2 12
–2.5 ±0.5 2.5
±10
±30
±5
1.3
UNITS
Bits
LSB
LSB
mV
%FS
µV/°C
ppm/°C
ppm/°C
LSB_RMS
22554fa
2