Datasheet
3
LTC1273
LTC1275/LTC1276
127356fa
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
S/(N + D) Signal-to-Noise Plus Distortion Ratio 50kHz/150kHz Input Signal 72/70 dB
THD Total Harmonic Distortion 50kHz/150kHz Input Signal –83/– 74 dB
Up to 5th Harmonic
Peak Harmonic or Spurious Noise 50kHz/150kHz Input Signal –85/– 76 dB
IMD Intermodulation Distortion f
IN1
= 29.37kHz, f
IN2
= 32.446kHz –80 dB
Full Power Bandwidth 4.5 MHz
Full Linear Bandwidth (S/(N + D) ≥ 68dB) 200 kHz
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Analog Input Range (Note 9) 4.95V ≤ V
DD
≤ 5.25V (LTC1273) ● 0 to 5 V
4.75V ≤ V
DD
≤ 5.25V, –5.25V ≤ V
SS
≤ –2.45V (LTC1275) ● ±2.5 V
4.95V ≤ V
DD
≤ 5.25V, –5.25V ≤ V
SS
≤ –4.95V (LTC1276) ● ±5V
I
IN
Analog Input Leakage Current CS = High ● ±1 µA
C
IN
Analog Input Capacitance Between Conversions (Sample Mode) 50 pF
During Conversions (Hold Mode) 5 pF
t
ACQ
Sample-and-Hold Commercial ● 600 ns
Acquisition Time Military ● 1000 ns
(Note 5)
ACCURACY
IC
DY
U
W
A
LTC1273A/LTC1275A/LTC1276A
LTC1273B/LTC1275B/LTC1276B
PUT
U
IA
A
U
LOG
LTC1273A/LTC1275A/LTC1276A
LTC1273B/LTC1275B/LTC1276B
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specfications are at T
A
= 25°C. With Internal Reference (Notes 5 and 6)
CCHARA TERIST
ICS
CO
U
VERTER
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Resolution (No Missing Codes) ● 12 12 Bits
Integral Linearity Error (Note 7) ±1/2 ±1LSB
Commercial
● ±1/2 ±1LSB
Military
● ±3/4 ±1LSB
Differential Linearity Error Commercial ● ±3/4 ±1LSB
Military
● ±1 ±1LSB
Offset Error (Note 8) ±3 ±4LSB
● ±4 ±6LSB
Gain Error ±10 ±15 LSB
Gain Error Tempco I
OUT(REFERENCE)
= 0 ● ±5 ±35 ±10 ±45 ppm/°C
LTC1273A/LTC1275A/LTC1276A LTC1273B/LTC1275B/LTC1276B
The ● denotes the specifications which apply over the full operating temperature range, otherwise
specfications are at T
A
= 25°C. (Note 5)
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
V
REF
Output Voltage I
OUT
= 0 2.400 2.420 2.440 2.400 2.420 2.440 V
V
REF
Output Tempco I
OUT
= 0 ● ±5 ±25 ±10 ±45 ppm/°C
V
REF
Line Regulation 4.95V ≤ V
DD
≤ 5.25V 0.01 0.01 LSB/V
–5.25V ≤ V
SS
≤ –4.95V 0.01 0.01 LSB/V
V
REF
Load Regulation 0V ≤ |I
OUT
| ≤ 1mA 2 2 LSB/mA
LTC1273B/LTC1275B/LTC1276BLTC1273A/LTC1275A/LTC1276A
The ● denotes the specifications which apply over the
full operating temperature range, otherwise specfications are at T
A
= 25°C. (Note 5)
I TER AL REFERE CE CHARACTERISTICS
UU U