Datasheet

ADC081S051
SNAS309E –APRIL 2005–REVISED MARCH 2013 www.ti.com
ADC081S051 Converter Electrical Characteristics
(1)(2)
The following specifications apply for V
A
= +2.7V to 5.25V, GND = 0V, f
SCLK
= 4 MHz to 10 MHz,
f
SAMPLE
= 200 ksps to 500 ksps, C
L
= 15 pF, unless otherwise noted. Boldface limits apply for T
A
= T
MIN
to T
MAX
:
all other limits T
A
= 25°C.
Symbol Parameter Conditions Typical Limits
(2)
Units
STATIC CONVERTER CHARACTERISTICS
Resolution with No Missing Codes 8 Bits
V
A
= +2.7V to +3.6V ±0.04 ±0.3 LSB (max)
INL Integral Non-Linearity +0.06 LSB (max)
V
A
= +4.75V to +5.25V ±0.3
−0.045 LSB (min)
V
A
= +2.7V to +3.6V ±0.05 ±0.2 LSB (max)
DNL Differential Non-Linearity +0.06 LSB (max)
V
A
= +4.75V to +5.25V ±0.2
−0.05 LSB (min)
V
A
= +2.7V to +3.6V −0.01 ±0.2 LSB (max)
V
OFF
Offset Error
V
A
= +4.75V to +5.25V +0.04 ±0.2 LSB (max)
V
A
= +2.7V to +3.6V +0.01 ±0.4 LSB (max)
GE Gain Error
V
A
= +4.75V to +5.25V −0.075 ±0.4 LSB (max)
+0.04 LSB (max)
V
A
= +2.7V to +3.6V ±0.3
−0.045 LSB (min)
TUE Total Unadjusted Error
+0.07 LSB (max)
V
A
= +4.75V to +5.25V ±0.3
−0.055 LSB (min)
DYNAMIC CONVERTER CHARACTERISTICS
V
A
= +2.7 to 5.25V
SINAD Signal-to-Noise Plus Distortion Ratio 49.5 49 dB (min)
f
IN
= 100 kHz, −0.02 dBFS
V
A
= +2.7 to 5.25V
SNR Signal-to-Noise Ratio 49.6 49 dB (min)
f
IN
= 100 kHz, −0.02 dBFS
V
A
= +2.7 to 5.25V
THD Total Harmonic Distortion −77 −65 dB (max)
f
IN
= 100 kHz, −0.02 dBFS
V
A
= +2.7 to 5.25V
SFDR Spurious-Free Dynamic Range 68 65 dB (min)
f
IN
= 100 kHz, −0.02 dBFS
V
A
= +2.7 to 5.25V
ENOB Effective Number of Bits 7.9 7.8 Bits (min)
f
IN
= 100 kHz, −0.02 dBFS
Intermodulation Distortion, Second V
A
= +5.25V
−83 dB
Order Terms f
a
= 103.5 kHz, f
b
= 113.5 kHz
IMD
Intermodulation Distortion, Third Order V
A
= +5.25V
−82 dB
Terms f
a
= 103.5 kHz, f
b
= 113.5 kHz
V
A
= +5V 11 MHz
FPBW -3 dB Full Power Bandwidth
V
A
= +3V 8 MHz
ANALOG INPUT CHARACTERISTICS
V
IN
Input Range 0 to V
A
V
I
DCL
DC Leakage Current ±1 µA (max)
Track Mode 30 pF
C
INA
Input Capacitance
Hold Mode 4 pF
DIGITAL INPUT CHARACTERISTICS
V
A
= +5.25V 2.4 V (min)
V
IH
Input High Voltage
V
A
= +3.6V 2.1 V (min)
V
A
= +5.25V 0.8 V (max)
V
IL
Input Low Voltage
V
A
= +3.6V 0.4 V (max)
I
IN
Input Current V
IN
= 0V or V
A
±0.1 ±1 µA (max)
C
IND
Digital Input Capacitance 2 4 pF (max)
(1) Tested limits are ensured to AOQL (Average Outgoing Quality Level).
(2) Data sheet min/max specification limits are ensured by design, test, or statistical analysis.
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