Datasheet
RECOMMENDED OPERATING CONDITIONS
ELECTRICAL CHARACTERISTICS: 100kSPS
ADS8365
www.ti.com
.................................................................................................................................................... SBAS362C – AUGUST 2006 – REVISED MARCH 2008
MIN NOM MAX UNIT
Supply voltage, AV
DD
to AGND 4.75 5 5.25 V
Low-voltage levels 2.7 3.6 V
Supply voltage, BV
DD
to BGND
5V logic levels 4.5 5 5.5 V
Reference input voltage 1.5 2.5 2.6 V
Operating common-mode signal, – IN 2.2 2.5 2.8 V
Analog inputs, +IN – ( – IN) 0 ± V
REF
V
Operating junction temperature range, T
J
– 40 +125 ° C
Over recommended operating free-air temperature range at – 40 ° C to +85 ° C, AV
DD
= 5V, BV
DD
= 3V, V
REF
= internal +2.5V, f
CLK
= 2MHz, and
f
SAMPLE
= 100kSPS, unless otherwise noted.
ADS8365
PARAMETER TEST CONDITIONS MIN TYP
(1)
MAX UNIT
ANALOG INPUT
Full-scale range FSR +IN – ( – IN) ± V
REF
V
Operating common-mode signal 2.2 2.8 V
Input resistance – IN = V
REF
750 Ω
Input capacitance – IN = V
REF
25 pF
Input leakage current – IN = V
REF
± 1 nA
Differential input resistance – IN = V
REF
1500 Ω
Differential input capacitance – IN = V
REF
15 pF
At dc 84 dB
Common-mode rejection ratio CMRR
V
IN
= ± 1.25V
PP
at 50kHz 80 dB
Bandwidth BW FS sinewave, – 3dB 10 MHz
DC ACCURACY
Resolution 16 Bits
No missing codes NMC 14 Bits
Integral linearity error INL ± 1.5 ± 4 LSB
Differential nonlinearity DNL ± 1.5 LSB
Bipolar offset error V
OS
± 1 ± 2.3 mV
Bipolar offset error match Only pair-wise matching 0.2 1 mV
Bipolar offset error drift TCV
OS
0.8 ppm/ ° C
Gain error G
ERR
Referenced to V
REF
± 0.05 ± 0.25 %FSR
Gain error match Only pair-wise matching 0.005 0.05 %FSR
Gain error drift TCG
ERR
2 ppm/ ° C
Noise 60 µ Vrms
Power-supply rejection ratio PSRR 4.75V < AV
DD
< 5.25V – 87 dB
SAMPLING DYNAMICS
Conversion time per ADC t
CONV
50kHz ≤ f
CLK
≤ 5MHz 3.2 320 µ s
Acquisition time t
AQ
f
CLK
= 5MHz 800 ns
Aperture delay 5 ns
Aperture delay matching 100 ps
Aperture jitter 50 ps
Clock frequency 0.05 5 MHz
(1) All typical values are at +25 ° C.
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