ADS8365 Datasheet, PDF (4/33 Pages) Burr-Brown (TI) – 16-Bit, 250kSPS, 6-Channel, Simultaneous Sampling SAR ANALOG-TO-DIGITAL CONVERTERS

ADS8365
SBAS362A – AUGUST 2006 – REVISED SEPTEMBER 2006
www.ti.com
ELECTRICAL CHARACTERISTICS: 100kSPS (continued)
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
AC ACCURACY
Total harmonic distortion
Spurious-free dynamic range
Signal-to-noise ratio
Signal-to-noise + distortion
Channel-to-channel isolation
THD V_IN = ±2.5V_PP at 50kHz
SFDR V_IN = ±2.5V_PP at 50kHz
SNR V_IN = ±2.5V_PP at 10kHz
SINAD V_IN = ±2.5V_PP at 10kHz
–94
dB
95
dB
88
dB
87
dB
95
dB
Effective number of bits
ENOB
14.3
Bits
VOLTAGE REFERENCE OUTPUT
Reference voltage output
Initial accuracy
V_OUT
2.475
2.5
2.525
V
±1
%
Output voltage temperature drift
Output voltage noise
Power-supply rejection ratio
dV_OUT/dT
f = 0.1Hz to 10Hz, C_L = 10µF
f = 10Hz to 10kHz, C_L = 10µF
PSRR
±20
ppm/°C
40
µV_PP
8
µVrms
60
dB
Output impedance
Short-circuit current
Turn-on settling time
VOLTAGE REFERENCE INPUT
R_OUT
I_SC
to 0.1% at C_L = 0pF
2
kΩ
1.25
mA
100
µs
Reference voltage input
V_IN
Reference input resistance
1.5
2.5
2.6
V
100
MΩ
Reference input capacitance
5
pF
Reference input current
1
µA
DIGITAL INPUTS⁽²⁾
Logic family
CMOS
High-level input voltage
Low-level input voltage
Input current
Input capacitance
DIGITAL OUTPUTS⁽²⁾
V_IH
V_IL
I_IN V_I = BV_DD or GND
C_I
0.7 × BV_DD
–0.3
BV_DD + 0.3
V
0.3 × BV_DD
V
±50
nA
5
pF
Logic family
CMOS
High-level output voltage
Low-level output voltage
High-impedance state output current
Output capacitance
Load capacitance
DIGITAL INPUTS⁽³⁾
V_OH BV_DD = 4.5V, I_OH = –100µA
V_OL BV_DD = 4.5V, I_OL = 100µA
I_OZ CS = BV_DD, V_I = BV_DD or GND
C_O
C_L
4.44
V
0.5
V
±50
nA
5
pF
30
pF
Logic family
LVCMOS
High-level input voltage
Low-level input voltage
Input current
Input capacitance
V_IH BV_DD = 3.6V
V_IL BV_DD = 2.7V
I_IN V_I = BV_DD or GND
C_I
2
–0.3
BV_DD + 0.3
V
0.8
V
±50
nA
5
pF
(2) Applies for 5.0V nominal supply: BV_DD (min) = 4.5V and BV_DD (max) = 5.5V.
(3) Applies for 3.0V nominal supply: BV_DD (min) = 2.7V and BV_DD (max) = 3.6V.
4
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