Datasheet

3
LTC1409
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
S/(N + D) Signal-to-Noise Plus Distortion Ratio 100kHz Input Signal (Note 12) ● 70 73.0 dB
400kHz Input Signal (Note 12)
● 68 72.5 dB
THD Total Harmonic Distortion 100kHz Input Signal, First Five Harmonics –90 dB
400kHz Input Signal, First Five Harmonics ● –86 –74 dB
Peak Harmonic or Spurious Noise 400kHz Input Signal ● –90 –74 dB
IMD Intermodulation Distortion f
IN1
= 29.37kHz, f
IN2
= 32.446kHz –84 dB
Full Power Bandwidth 15 MHz
Full Linear Bandwidth S/(N + D) ≥ 68dB 1.6 MHz
(Note 5)
ACCURACY
IC
DY
U
W
A
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
REF
Output Voltage I
OUT
= 0 2.480 2.500 2.520 V
V
REF
Output Tempco I
OUT
= 0 ±15 ppm/°C
V
REF
Line Regulation 4.75V ≤ V
DD
≤ 5.25V 0.01 LSB/V
–5.25V ≤ V
SS
≤ –4.75V 0.01 LSB/V
V
REF
Output Resistance –0.1mA ≤ |I
OUT
| ≤ 0.1mA 4 kΩ
REFCOMP Output Voltage I
OUT
= 0 4.06 V
(Note 5)
I TER AL REFERE CE CHARACTERISTICS
U
UU
(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
O
= –10µA 4.5 V
I
O
= –200µA ● 4.0 V
V
OL
Low Level Output Voltage V
DD
= 4.75V
I
O
= 160µA 0.05 V
I
O
= 1.6mA ● 0.10 0.4 V
I
OZ
High-Z Output Leakage D11 to D0 V
OUT
= 0V to V
DD
, CS High ● ±10 µA
C
OZ
High-Z Output Capacitance D11 to D0 CS High (Note 9 ) ● 15 pF
I
SOURCE
Output Source Current V
OUT
= 0V –10 mA
I
SINK
Output Sink Current V
OUT
= V
DD
10 mA
(Note 5)
DIGITAL I PUTS A D DIGITAL OUTPUTS
U
U
POWER REQUIRE E TS
W
U
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
DD
Positive Supply Voltage (Notes 10, 11) 4.75 5.25 V
V
SS
Negative Supply Voltage (Note 10) –4.75 –5.25 V
I
DD
Positive Supply Current CS High ● 6.0 9.0 mA
Nap Mode CONVST = CS = RD = SHDN = 0V, NAP/SLP = 5V 0.8 1.2 mA
Sleep Mode CONVST = CS = RD = SHDN = 0V, NAP/SLP = 0V 1.0 µA