Datasheet
LTC1403/LTC1403A
3
1403fb
The ● denotes the specifi cations which apply over the full operating temperature range,
otherwise specifi cations are at T
A
= 25°C. V
DD
= 3V
DYNAMIC ACCURACY
SYMBOL PARAMETER CONDITIONS
LTC1403/LTC1403H LTC1403A/LTC1403AH
UNITS
MIN TYP MAX MIN TYP MAX
SINAD Signal-to-Noise Plus
Distortion Ratio
100kHz Input Signal
1.4MHz Input Signal
1.4MHz Input Signal (H Grade)
100kHz Input Signal, External V
REF
= 3.3V,
V
DD
≥ 3.3V
750kHz Input Signal, External V
REF
= 3.3V,
V
DD
≥ 3.3V
●
●
68
67
70.5
70.5
70.5
72
72
70
69
73.5
73.5
73.0
76.3
76.3
dB
dB
dB
dB
dB
THD Total Harmonic
Distortion
100kHz First 5 Harmonics
1.4MHz First 5 Harmonics
●
–87
–83 –76
–90
–86 –78
dB
dB
SFDR Spurious Free
Dynamic Range
100kHz Input Signal
1.4MHz Input Signal
–87
–83
–90
–86
dB
dB
IMD Intermodulation
Distortion
1.25V to 2.5V 1.25MHz into A
IN
+
, 0V to 1.25V,
1.2MHz into A
IN
–
–82 –82 dB
Code-to-Code
Transition Noise
V
REF
= 2.5V (Note 18) 0.25 1 LSB
RMS
Full Power Bandwidth V
IN
= 2.5V
P-P
, SDO = 11585LSB
P-P
(Note 15) 50 50 MHz
Full Linear Bandwidth S/(N + D) ≥ 68dB 5 5 MHz
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
High Level Input Voltage V
DD
= 3.3V
●
2.4 V
V
IL
Low Level Input Voltage V
DD
= 2.7V
●
0.6 V
I
IN
Digital Input Current V
IN
= 0V to V
DD
●
±10 μA
C
IN
Digital Input Capacitance 5pF
V
OH
High Level Output Voltage V
DD
= 3V, I
OUT
= –200μA
●
2.5 2.9 V
V
OL
Low Level Output Voltage V
DD
= 2.7V, I
OUT
= 160μA
V
DD
= 2.7V, I
OUT
= 1.6mA
●
0.05
0.10 0.4
V
V
I
OZ
Hi-Z Output Leakage D
OUT
V
OUT
= 0V to V
DD
●
±10 μA
C
OZ
Hi-Z Output Capacitance D
OUT
1pF
I
SOURCE
Output Short-Circuit Source Current V
OUT
= 0V, V
DD
= 3V 20 mA
I
SINK
Output Short-Circuit Sink Current V
OUT
= V
DD
= 3V 15 mA
The ● denotes the specifi cations which apply over the full
operating temperature range, otherwise specifi cations are at T
A
= 25°C. V
DD
= 3V
DIGITAL INPUTS AND DIGITAL OUTPUTS
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
REF
Output Voltage I
OUT
= 0 2.5 V
V
REF
Output Tempco 15 ppm//°C
V
REF
Line Regulation V
DD
= 2.7V to 3.6V, V
REF
= 2.5V 600 μV/V
V
REF
Output Resistance Load Current = 0.5mA 0.2
Ω
V
REF
Settling Time 2ms
The ● denotes the specifi cations which apply over the
full operating temperature range, otherwise specifi cations are at T
A
= 25°C. V
DD
= 3V
INTERNAL REFERENCE CHHARACTERISTICS