Datasheet

ADS802
2
SBAS039B
www.ti.com
ABSOLUTE MAXIMUM RATINGS
(1)
+V
S
........................................................................................................ +6V
Analog Input .............................................................. 0V to (+V
S
+ 300mV)
Logic Input................................................................. 0V to (+V
S
+ 300mV)
Case Temperature .......................................................................... +100°C
Junction Temperature ..................................................................... +150°C
Storage Temperature ...................................................................... +125°C
External Top Reference Voltage (REFT) .................................. +3.4V Max
External Bottom Reference Voltage (REFB) .............................. +1.1V Min
ADS802U
PARAMETER CONDITIONS TEMP MIN TYP MAX UNITS
ELECTRICAL CHARACTERISTICS
At T
A
= +25°C, V
S
= +5V, and Sampling Rate = 10MHz, and with a 50% duty cycle clock having 2ns rise-and-fall time, unless otherwise noted.
RESOLUTION 12 Bits
Specified Temperature Range T
AMBIENT
–40 +85 °C
ANALOG INPUT
Differential Full-Scale Input Range Both Inputs +1.25 +3.25 V
Common-Mode Voltage +2.25 V
Analog Input Bandwidth (–3dB)
Small-Signal –20dBFS
(1)
Input +25°C 400 MHz
Full-Power 0dBFS Input +25°C65 MHz
Input Impedance 1.25 || 4 MΩ || pF
DIGITAL INPUT
Logic Family TTL/HCT Compatible CMOS
Convert Command Start Conversion Falling Edge
ACCURACY
(2)
f
S
= 2.5MHz
Gain Error +25°C ±0.6 ±1.5 %
Full ±1.0 ±2.5 %
Gain Tempco ±85 ppm/°C
Power-Supply Rejection of Gain ∆ +V
S
= ±5% +25°C 0.03 0.1 %FSR/%
Input Offset Error Full ±2.1 ±3.0 %
Power-Supply Rejection of Offset ∆ +V
S
= ±5% +25°C 0.05 0.1 %FSR/%
CONVERSION CHARACTERISTICS
Sample Rate 10k 10M Sample/s
Data Latency 6.5 Convert Cycle
DYNAMIC CHARACTERISTICS
Differential Linearity Error
f = 500kHz +25°C ±0.3 ±1.0 LSB
0°C to +85°C ±0.4 ±1.0 LSB
f = 5MHz +25°C ±0.4 ±1.0 LSB
0°C to +85°C ±0.4 ±1.0 LSB
No Missing Codes 0°C to +85°C Tested LSB
Integral Linearity Error at f = 500kHz Best Fit 0°C to +85°C ±1.7 ±2.75 LSB
Spurious-Free Dynamic Range (SFDR)
f = 500kHz (–1dBFS input) +25°C 67 77 dBFS
Full 66 75 dBFS
f = 5MHz (–1dBFS input) +25°C 63 67 dBFS
Full 62 66 dBFS
NOTE: (1) Stresses above these ratings may permanently damage the device.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instru-
ments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degrada-
tion to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet its
published specifications.
SPECIFIED
PACKAGE TEMPERATURE PACKAGE ORDERING TRANSPORT
PRODUCT PACKAGE-LEAD DESIGNATOR RANGE MARKING NUMBER MEDIA, QUANTITY
ADS802U SO-28 DW –40°C to +85°C ADS802U ADS802U Rails, 28
ADS802U
"""ADS802U ADS802U/1K Tape and Reel, 1000
PACKAGE/ORDERING INFORMATION
(1)
NOTE: (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at
www.ti.com.
NOTES: (1) dBFS refers to dB below Full-Scale. (2) Percentage accuracies are referred to the internal A/D converter Full-Scale Range of 4Vp-p. (3) IMD is referred
to the larger of the two input signals. If referred to the peak envelope signal (≈0dB), the intermodulation products will be 7dB lower. (4) No “rollover” of bits.