Datasheet

–2–
REV. 0
AD7862–SPECIFICATIONS
AB S
Parameter Version
1
Version Version Units Test Conditions/Comments
SAMPLE AND HOLD
–3 dB Small Signal Bandwidth 3 3 3 MHz typ
Aperture Delay 20 20 20 ns typ
Aperture Jitter 100 100 100 ps typ
Aperture Delay Matching 200 200 200 ps typ
DYNAMIC PERFORMANCE
2
f
IN
= 100.0 kHz, f
S
= 250 kSPS
Signal to (Noise+Distortion) Ratio
3
@ +25°C 70 71 70 dB min
T
MIN
to T
MAX
70 70 70 dB min
Total Harmonic Distortion
3
–78 –78 –78 dB max
Peak Harmonic or Spurious Noise
3
–85 –85 –85 dB typ
Intermodulation Distortion
3
fa = 49 kHz, fb = 50 kHz
2nd Order Terms –85 –85 –85 dB typ
3rd Order Terms –85 –85 –85 dB typ
Channel to Channel Isolation
3
–80 –80 –80 dB max f
IN
= 100 kHz Sine Wave
DC ACCURACY Any Channel
Resolution 12 12 12 Bits
Minimum Resolution for which
No Missing Codes are Guaranteed 12 12 12 Bits
Relative Accuracy
3
±1 ±1 ±1 LSB max Typically 0.4 LSB
Differential Nonlinearity
3
±1 ±1 ±1 LSB max
Positive Gain Error
3
±4 ±3 ±4 LSB max
Positive Gain Error Match
3
4 3 4 LSB max
AD7862-10
Negative Gain Error
3
±4 ±3 ±4 LSB max
Bipolar Zero Error ±4 ±3 ±4 LSB max
Bipolar Zero Error Match 4 3 4 LSB max
AD7862-3
Negative Gain Error
3
±4 ±3 ±4 LSB max
Bipolar Zero Error ±4 ±3 ±4 LSB max
Bipolar Zero Error Match 4 3 4 LSB max
AD7862-2
Unipolar Offset Error +4 +3 +4 LSB max
Unipolar Offset Error Match 4 3.5 4 LSB max
ANALOG INPUTS
AD7862-10
Input Voltage Range ±10 ±10 ±10 Volts Input
Input Resistance 24 24 24 kΩ min
AD7862-3
Input Voltage Range ±2.5 ±2.5 ±2.5 Volts Input
Input Resistance 6 6 6 kΩ min
AD7862-2
Input Voltage Range +2.5 +2.5 +2.5 Volts Input
Input Current 500 500 500 nA max
REFERENCE INPUT/OUTPUT
REF IN Input Voltage Range 2.375/2.625 2.375/2.625 2.375/2.625 V min/V max 2.5 V ± 5%
REF IN Input Capacitance
4
10 10 10 pF max
REF OUT Output Voltage 2.5 2.5 2.5 V nom
REF OUT Error @ +25°C ±10 ±10 ±10 mV max
REF OUT Error T
MIN
to T
MAX
±25 ±25 ±25 mV max
REF OUT Temperature Coefficient 25 25 25 ppm/°C typ
REF OUT Output Impedance 2 2 2 kΩ nom
LOGIC INPUTS
Input High Voltage, V
INH
2.4 2.4 2.4 V min V
DD
= 5 V ± 5%
Input Low Voltage, V
INL
0.8 0.8 0.8 V max V
DD
= 5 V ± 5%
Input Current, I
IN
±10 ±10 ±10 µA max
Input Capacitance, C
IN
4
10 10 10 pF max
(V
DD
= +5 V 6 5%, AGND = DGND = 0 V, REF = Internal. All Specifications T
MIN
to T
MAX
unless otherwise noted.)