Datasheet

ADC104S021
SNAS278H –FEBRUARY 2005–REVISED MARCH 2013 www.ti.com
ADC104S021/ADC104S021Q Converter Electrical Characteristics
(1)(2)
The following specifications apply for V
A
= +2.7V to 5.25V, GND = 0V, C
L
= 50 pF, f
SCLK
= 0.8 MHz to 3.2 MHz, f
SAMPLE
= 50
ksps to 200 ksps, 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
(3)
Units
STATIC CONVERTER CHARACTERISTICS
Resolution with No Missing Codes 10 Bits
+0.3 LSB (max)
INL Integral Non-Linearity ±0.13
−0.4 LSB (min)
DNL Differential Non-Linearity ±0.13 ±0.4 LSB (max)
V
OFF
Offset Error +0.1 ±0.4 LSB (max)
OEM Channel to Channel Offset Error Match ±0.02 ±0.5 LSB (max)
FSE Full-Scale Error −0.1 ±0.7 LSB (max)
Channel to Channel Full-Scale Error
FSEM +0.02 ±0.5 LSB (max)
Match
DYNAMIC CONVERTER CHARACTERISTICS
V
A
= +2.7 to 5.25V
SINAD Signal-to-Noise Plus Distortion Ratio 61.8 61 dB (min)
f
IN
= 39.9 kHz, −0.02 dBFS
V
A
= +2.7 to 5.25V
SNR Signal-to-Noise Ratio 61.8 61.3 dB (min)
f
IN
= 39.9 kHz, −0.02 dBFS
V
A
= +2.7 to 5.25V
THD Total Harmonic Distortion −86 −72 dB (max)
f
IN
= 39.9 kHz, −0.02 dBFS
V
A
= +2.7 to 5.25V
SFDR Spurious-Free Dynamic Range 82 75 dB (min)
f
IN
= 39.9 kHz, −0.02 dBFS
V
A
= +2.7 to 5.25V
ENOB Effective Number of Bits 9.9 9.8 Bits (min)
f
IN
= 39.9 kHz, −0.02 dBFS
V
A
= +5.25V
Channel-to-Channel Crosstalk −87 dB
f
IN
= 39.9 kHz
Intermodulation Distortion, Second V
A
= +5.25V
−82 dB
Order Terms f
a
= 40.161 kHz, f
b
= 41.015 kHz
IMD
Intermodulation Distortion, Third Order V
A
= +5.25V
−81 dB
Terms f
a
= 40.161 kHz, f
b
= 41.015 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 33 pF
C
INA
Input Capacitance
Hold Mode 3 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
IL
Input Low Voltage 0.8 V (max)
I
IN
Input Current V
IN
= 0V or V
A
±0.1 ±10 µA (max)
C
IND
Digital Input Capacitance 2 4 pF (max)
DIGITAL OUTPUT CHARACTERISTICS
I
SOURCE
= 200 µA V
A
− 0.03 V
A
− 0.5 V (min)
V
OH
Output High Voltage
I
SOURCE
= 1 mA V
A
− 0.1 V
I
SINK
= 200 µA 0.03 0.4 V (max)
V
OL
Output Low Voltage
I
SINK
= 1 mA 0.1 V
(1) Min/max specification limits are specified by design, test, or statistical analysis.
(2) PPAP (Production part Approval Process) documentation of the device technology, process and qualification is available from Texas
Instruments upon request.
(3) Tested limits are ensured to TI's AOQL (Average Outgoing Quality Level).
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