Datasheet

REV. 0
–2–
AD7303–SPECIFICATIONS
(V
DD
= +2.7 V to +5.5 V, Internal Reference; R
L
= 10 kV to V
DD
and GND; C
L
= 100 pF
to GND; all specifications T
MIN
to T
MAX
unless otherwise noted)
Parameter B Versions
1
Units Conditions/Comments
STATIC PERFORMANCE
Resolution 8 Bits
Relative Accuracy ±1 LSB max Note 2
Differential Nonlinearity ±1 LSB max Guaranteed Monotonic
Zero-Code Error @ +25°C 3 LSB max All Zeros Loaded to DAC Register
Full-Scale Error –0.5 LSB typ All Ones Loaded to DAC Register
Gain Error
3
+1 % FSR typ
Zero-Code Temperature Coefficient 100 µV/°C typ
DAC REFERENCE INPUT
REFIN Input Range 1 to V
DD
/2 V min to max
REFIN Input Impedance 10 ΜΩ typ
Internal Voltage Reference Error
4
±1 % max
OUTPUT CHARACTERISTICS
Output Voltage Range 0 to V
DD
V min to max
Output Voltage Settling Time 2 µs max Typically 1.2 µs
Slew Rate 7.5 V/µs typ
Digital to Analog Glitch Impulse 0.5 nV-s typ 1 LSB Change Around Major Carry
Digital Feedthrough 0.2 nV-s typ
Digital Crosstalk 0.2 nV-s typ
Analog Crosstalk ±0.2 LSB typ
DC Output Impedance 40 Ω typ
Short Circuit Current 14 mA typ
Power Supply Rejection Ratio 0.0001 %/% max ∆ V
DD
= ±10%
LOGIC INPUTS
Input Current ±10 µA max
V
INL
, Input Low Voltage 0.8 V max V
DD
= +5 V
0.6 V max V
DD
= +3 V
V
INH
, Input High Voltage 2.4 V min V
DD
= +5 V
2.1 V min V
DD
= +3 V
Pin Capacitance 5 pF max
POWER REQUIREMENTS
V
DD
2.7/5.5 V min/max
I
DD
(Normal Mode) Both DACs Active and Excluding Load Currents,
V
DD
= 3.3 V V
IH
= V
DD
, V
IL
= GND
@ +25°C 2.1 mA max See Figure 8
T
MIN
– T
MAX
2.3 mA max
V
DD
= 5.5 V
@ +25°C 2.7 mA max
T
MIN
– T
MAX
3.5 mA max
I
DD
(Full Power-Down)
@ +25°C 80 nA typ V
IH
= V
DD
, V
IL
= GND
T
MIN
– T
MAX
1 µA max See Figure 19
NOTES
1
Temperature ranges are as follows: B Version, –40°C to +105°C.
2
Relative Accuracy is calculated using a reduced digital code range of 15 to 245.
3
Gain Error is specified between Codes 15 and 245. The actual error at Code 15 is typically 3 LSB.
4
Internal Voltage Reference Error = (Actual V
REF
– Ideal V
REF
/Ideal V
REF
) • 100. Ideal V
REF
= V
DD
/2, actual V
REF
= voltage on reference pin when internal reference
is selected.
Specifications subject to change without notice.
ORDERING GUIDE
Temperature Package
Model Range Options*
AD7303BN –40°C to +105°C N-8
AD7303BR –40°C to +105°C SO-8
AD7303BRM –40°C to +105°C RM-8
*N = Plastic DIP; R = SOIC; RM = microSOIC.