(VDD = +5 V, AGND = DGND = 0 V, REF IN = +2.5 V. All specifications TMIN to TMAX unless
AD7893–SPECIFICATIONS otherwise noted.)
A
B
S
Parameter
Versionsl
Versions
Version
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
Signal to (Noise + Distortion) Ratio2
@ +25°C
70
–80
–80
70
–80
–80
70
–80
–80
dB min
dB max
dB max
fIN = 10 kHz Sine Wave, fSAMPLE = 117 kHz
fIN = 10 kHz Sine Wave, fSAMPLE = 117 kHz
fIN = 10 kHz Sine Wave, fSAMPLE = 117 kHz
fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 117 kHz
Total Harmonic Distortion (THD)2
Peak Harmonic or Spurious Noise2
Intermodulation Distortion (IMD)2
2nd Order Terms
–80
–80
–80
–80
–80
–80
dB max
dB max
3rd Order Terms
DC ACCURACY
Resolution
12
12
12
Bits
Minimum Resolution for which
No Missing Codes are Guaranteed
Relative Accuracy2
12
±1
±1
±3
12
±1/2
±1
12
±1
±1
±3
Bits
LSB max
LSB max
LSB max
Differential Nonlinearity2
Positive Full-Scale Error2
AD7893-2, AD7893-5
Unipolar Offset Error
AD7893-10, AD7893-3
Negative Full-Scale Error2
Bipolar Zero Error
±1.5
±4
±3
±4
LSB max
±3
±4
±1.5
±2
±3
±4
LSB max
LSB max
ANALOG INPUT
AD7893-10
Input Voltage Range
Input Resistance
AD7893-3
±10
16
±10
16
±10
16
Volts
kΩ min
Input Voltage Range
Input Resistance
AD7893-5
±2.5
4
±2.5
4
±2.5
4
Volts
kΩ min
Input Voltage Range
Input Resistance
AD7893-2
0 to +5
9
0 to +5
9
0 to +5
9
Volts
kΩ min
Input Voltage Range
Input Current
0 to +2.5
500
0 to +2.5
500
0 to +2.5
500
Volts
nA max
REFERENCE INPUT
REF IN Input Voltage Range
Input Current
2.375/2.625 2.375/2.625 2.375/2.625 V min/V max 2.5 V ± 5%
2
2
10
10
µA max
Input Capacitance3
10
10
pF max
LOGIC INPUTS
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current, IIN
2.4
0.8
±10
10
2.4
0.8
±10
10
2.4
0.8
±10
10
V min
VDD = 5 V ± 5%
VDD = 5 V ± 5%
VIN = 0 V to VDD
V max
µA max
pF max
3
Input Capacitance, CIN
LOGIC OUTPUTS
Output High Voltage, VOH
Output Low Voltage, VOL
Output Coding
4.0
0.4
4.0
0.4
4.0
0.4
V min
V max
ISOURCE = 200 µA
ISINK = 1.6 mA
AD7893-10, AD7893-3
AD7893-2, AD7893-5
2s Complement
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
6
1.5
6
1.5
6
1.5
µs max
µs max
Track/Hold Acquisition Time2
POWER REQUIREMENTS
VDD
IDD
+5
9
45
+5
9
45
+5
9
45
V nom
mA max
mW max
±5% for Specified Performance
Power Dissipation
Typically 25 mW
NOTES
1Temperature Ranges are as follows: A, B Versions: –40°C to +85°C, S Version: –55°C to +125°C.
2See Terminology.
3Sample tested @ +25°C to ensure compliance.
Specifications subject to change without notice.
–2–
REV. E
ADI [ ADI ]
