Datasheet

3
LTC1609
1609fa
LTC1609 LTC1609A
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
S/(N + D) Signal-to-(Noise 1kHz Input Signal (Note 14) 87.5 85 87.5 dB
+ Distortion) Ratio 10kHz Input Signal 87 87 dB
20kHz, –60dB Input Signal 30 30 dB
THD Total Harmonic 1kHz Input Signal, First 5 Harmonics – 100 – 100 –96 dB
Distortion 10kHz Input Signal, First 5 Harmonics –94 –94 dB
Peak Harmonic or 1kHz Input Signal –102 –102 dB
Spurious Noise 10kHz Input Signal –94 –94 dB
Full-Power Bandwidth (Note 15) 275 275 kHz
–3dB Input Bandwidth 1 1 MHz
Aperture Delay 40 40 ns
Aperture Jitter Sufficient to Meet AC Specs Sufficient to Meet AC Specs
Transient Response Full-Scale Step (Note 9) 2 2 µs
Overvoltage Recovery (Note 16) 150 150 ns
LTC1609/LTC1609A
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Analog Input Range (Note 9) 4.75V ≤ V
ANA
≤ 5.25V, 4.75V ≤ V
DIG
≤ 5.25V, ● ±10, 0V to 5V, etc. V
(See Tables 1a and 1b)
C
IN
Analog Input Capacitance 10 pF
R
IN
Analog Input Impedance See Tables 1a and 1b kΩ
The ● indicates specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. (Note 5)
(Notes 5, 14)
A ALOG I PUT
UU
DY A IC ACCURACY
UW
LTC1609/LTC1609A
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
REF
Output Voltage I
OUT
= 0 ● 2.470 2.500 2.520 V
V
REF
Output Tempco I
OUT
= 0 ±5 ppm/°C
Internal Reference Source Current 1 µA
External Reference Voltage for Specified Linearity (Notes 9, 10) 2.30 2.50 2.70 V
External Reference Current Drain External Reference = 2.5V (Note 9) ● 100 µA
CAP Output Voltage I
OUT
= 0 2.50 V
The ● indicates specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 5)
INTERNAL REFERENCE CHARACTERISTICS
UU U
The ● indicates specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. With external reference (Notes 5, 6).
LTC1609 LTC1609A
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Bipolar Zero Error Drift Bipolar Ranges ±2 ±2 ppm/°C
Unipolar Zero Error External Reference = 2.5V, Unipolar Ranges ● ±10 ±10 mV
Unipolar Zero Error Drift Unipolar Ranges ±2 ±2 ppm/°C
Full-Scale Error Drift ±7 ±7 ppm/°C
Full-Scale Error External Reference = 2.5V (Notes 12, 13) ● ±0.50 ±0.25 %
Full-Scale Error Drift External Reference = 2.5V ±2 ±2 ppm/°C
Power Supply Sensitivity
V
ANA
= V
DIG
= V
DD
V
DD
= 5V ±5% (Note 9) ±8 ±8LSB
CONVERTER CHARACTERISTICS
U