Datasheet

3
LTC1608
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
S/N Signal-to-Noise Ratio 5kHz Input Signal 90 dB
100kHz Input Signal 88 dB
S/(N + D) Signal-to-(Noise + Distortion) Ratio 5kHz Input Signal 90 dB
100kHz Input Signal (Note 10) 84 dB
THD Total Harmonic Distortion 5kHz Input Signal –100 dB
Up to 5th Harmonic 100kHz Input Signal –91 dB
SFDR Spurious Free Dynamic Range 100kHz Input Signal 94 dB
IMD Intermodulation Distortion f
IN1
= 29.37kHz, f
IN2
= 32.446kHz –88 dB
Full Power Bandwidth 5 MHz
Full Linear Bandwidth (S/(N + D) ≥ 84dB) 350 kHz
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
REF
Output Voltage I
OUT
= 0 2.475 2.500 2.515 V
V
REF
Output Tempco I
OUT
= 0 ±15 ppm/°C
V
REF
Line Regulation 4.75 ≤ V
DD
≤ 5.25V 0.01 LSB/V
–5.25V ≤ V
SS
≤ –4.75V 0.01 LSB/V
V
REF
Output Resistance 0 ≤ I
OUT
 ≤ 1mA 7.5 kΩ
REFCOMP Output Voltage I
OUT
= 0 4.375 V
DY A IC ACCURACY
UW
T
A
= 25°C (Note 5)
I TER AL REFERE CE CHARACTERISTICS
UU U
T
A
= 25°C (Note 5)
DIGITAL I PUTS A D DIGITAL OUTPUTS
UU
The ● denotes specifications that apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 5)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
High Level Input Voltage V
DD
= 5.25V ● 2.4 V
V
IL
Low Level Input Voltage V
DD
= 4.75V ● 0.8 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
= 4.75V, I
OUT
= –10µA 4.5 V
V
DD
= 4.75V, I
OUT
= –400µA ● 4.0 V
V
OL
Low Level Output Voltage V
DD
= 4.75V, I
OUT
= 160µA 0.05 V
V
DD
= 4.75V, I
OUT
= 1.6mA ● 0.10 0.4 V
I
OZ
Hi-Z Output Leakage D15 to D0 V
OUT
= 0V to V
DD
, CS High ● ±10 µA
C
OZ
Hi-Z Output Capacitance D15 to D0 CS High (Note 11) ● 15 pF
I
SOURCE
Output Source Current V
OUT
= 0V –10 mA
I
SINK
Output Sink Current V
OUT
= V
DD
10 mA