Datasheet

LTC2309
3
2309fd
COnVeRteR AnD MuLtIpLexeR CHARACteRIstICs
PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution (No Missing Codes)
l
12 Bits
Integral Linearity Error (Note 6)
l
±0.45 ±1 LSB
Differential Linearity Error
l
±0.35 ±1 LSB
Bipolar Zero Error (Note 7)
l
±1 ±8 LSB
Bipolar Zero Error Drift 0.002 LSB/°C
Bipolar Zero Error Match ±0.1 ±3 LSB
Unipolar Zero Error (Note 7)
l
±0.4 ±6 LSB
Unipolar Zero Error Drift 0.002 LSB/°C
Unipolar Zero Error Match ±0.2 ±1 LSB
Bipolar Full-Scale Error External Reference (Note 8)
REFCOMP = 4.096V
l
l
±0.5
±0.4
±10
±9
LSB
LSB
Bipolar Full-Scale Error Drift External Reference 0.05 LSB/°C
Bipolar Full-Scale Error Match ±0.4 ±3 LSB
Unipolar Full-Scale Error QFN External Reference (Note 8)
TSSOP External Reference (Note 8)
l
l
±0.4
±0.5
±10
±12
LSB
LSB
REFCOMP = 4.096V
l
±0.3 ±6 LSB
Unipolar Full-Scale Error Drift External Reference 0.05 LSB/°C
Unipolar Full-Scale Error Match ±0.3 ±2 LSB
The l denotes the specifications
which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C. (Notes 4, 5)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
+
Absolute Input Range (CH0 to CH7) (Note 9)
l
–0.05 REFCOMP V
V
IN
–
Absolute Input Range (CH0 to CH7, COM) Unipolar (Note 9)
Bipolar (Note 9)
l
l
–0.05
–0.05
0.25 • REFCOMP
0.75 • REFCOMP
V
V
V
IN
+
– V
IN
–
Input Differential Voltage Range V
IN
= V
IN
+
– V
IN
–
(Unipolar)
V
IN
= V
IN
+
– V
IN
–
(Bipolar)
l
l
0 to REFCOMP
±REFCOMP/2
V
V
I
IN
Analog Input Leakage Current
l
±1 µA
C
IN
Analog Input Capacitance Sample Mode
Hold Mode
55
5
pF
pF
CMRR Input Common Mode Rejection Ratio 70 dB
AnALOG Input
The l denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C. (Note 4)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SINAD Signal-to-(Noise + Distortion) Ratio f
IN
= 1kHz
l
71 73.3 dB
SNR Signal-to-Noise Ratio f
IN
= 1kHz
l
71 73.4 dB
THD Total Harmonic Distortion f
IN
= 1kHz, First 5 Harmonics
l
–88 –77 dB
SFDR Spurious Free Dynamic Range f
IN
= 1kHz
l
79 90 dB
Channel-to-Channel Isolation f
IN
= 1kHz –109 dB
Full Linear Bandwidth (Note 11) 700 kHz
–3dB Input Linear Bandwidth 25 MHz
Aperture Delay 13 ns
Transient Response Full-Scale Step 240 ns
DYnAMIC ACCuRACY
The l denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at T
A
= 25°C. A
IN
= –1dBFS. (Notes 4, 10)