Datasheet

ADS805
3
SBAS073B
www.ti.com
ELECTRICAL CHARACTERISTICS (Cont.)
At T
A
= full specified temperature range, V
S
= +5V, specified input range = 1.5V to 3.5V, and single-ended input and sampling rate = 20MHz, unless otherwise specified.
ADS805E
PARAMETER CONDITIONS MIN TYP MAX UNITS
DIGITAL INPUTS
Logic Family CMOS Compatible
Convert Command Start Conversion Rising Edge of Convert Clock
High Level Input Current (V
IN
= 5V)
(5)
±100 µA
Low Level Input Current (V
IN
= 0V) 10 µA
High Level Input Voltage +3.5 V
Low Level Input Voltage +1.0 V
Input Capacitance 5pF
DIGITAL OUTPUTS
Logic Family CMOS/TTL Compatible
Logic Coding Straight Offset Binary
Low Output Voltage (I
OL
= 50µA) 0.1 V
Low Output Voltage (I
OL
= 1.6mA) 0.4 V
High Output Voltage (I
OH
= 50µA) +4.5 V
High Output Voltage (I
OH
= 0.5mA) +2.4 V
3-State Enable Time
OE
= L 20 40 ns
3-State Disable Time
OE
= H 2 10 ns
Output Capacitance 5pF
ACCURACY (5Vp-p Input Range) f
S
= 2.5MHz
Zero-Error (Referred to –FS) At 25°C 0.3 ±1.5 %FS
Zero-Error Drift (Referred to –FS) ±5 ppm/°C
Gain Error
(6)
At 25°C 0.7 ±2.0 %FS
Gain Error Drift
(6)
±18 ppm/°C
Gain Error
(7)
At 25°C 0.2 ±1.5 %FS
Gain Error Drift
(7)
±10 ppm/°C
Power-Supply Rejection of Gain ∆V
S
= ±5% 60 70 dB
Reference Input Resistance 1.6 kΩ
Internal Voltage Reference Tolerance (V
REF
= 2.5V) At 25°C ±35 mV
Internal Voltage Reference Tolerance (V
REF
= 1.0V) At 25°C ±14 mV
POWER-SUPPLY REQUIREMENTS
Supply Voltage: +V
S
Operating +4.75 +5.0 +5.25 V
Supply Current: +I
S
Operating 60 69 mA
Power Dissipation Operating 300 345 mW
Thermal Resistance,
θ
JA
SSOP-28 50 °C/W
NOTES: (1) Spurious-Free Dynamic Range refers to the magnitude of the largest harmonic. (2) dBFS means dB relative to full-scale. (3) 2-tone intermodulation
distortion is referred to the largest fundamental tone. This number will be 6dB higher if it is referred to the magnitude of the 2-tone fundamental envelope. (4) Effective
number of bits (ENOB) is defined by (SINAD – 1.76)/6.02. (5) Internal 50kΩ pull-down resistor. (6) Includes internal reference. (7) Excludes internal reference.