Appendix A -- Interface 1000 Specifications--Floating Operation
9 - 1
Appendix A -- Interface 1000 Specifications
All specifications are at an ambient temperature of 22 °C, with the Interface 1000 powered using the
external power supply shipped with the unit, a standard shielded 60 cm cell cable, and the cell enclosed in
a Faraday shield. All specifications are after software calibration.
A numbered note qualifies many of the specifications. Many of these notes describe the method used to
measure a specification. The notes are found at the end of this appendix.
All specifications are subject to change without notice.
Control Amplifier
Compliance Voltage Min
± 22
volts Note 1
Output Current Min
±1000
mA Note 2
Unity Gain Bandwidth Typ 980, 260, 40, 4.0, 0.4 kHz Notes 3, 4
Slew Rate Typ 10, 4.5, 0.6, 0.06, 0.006
V/µsec
Notes 3, 4
Differential Electrometer
Max Input Voltage Min
±12
volts Note 5
Input Current Max 25 pA Note 6
Input Resistance
Differential (between inputs)
Common Mode (input to ground)
Typ
20
1
TΩ
Note 5
Input Capacitance
Differential (between inputs)
Common Mode (input to ground)
Typ
0.3
12
pf Note 5
Bandwidth (-3 dB) Min 15 MHz Note 8
CMMR
DC to 10 kHz
10 kHz to 1 MHz
Min
86
60
Note 9
Voltage Measurement
A/D Full Scale Ranges Typ
±12.0, ± 3.0
Volts
Notes 5, 10
Resolution Typ 400, 100
µV/bit
Zero Offset Error Max 1 mV Note 11
Gain Error Max 0.3 % Note 11
Offset Range Typ
±3.2768, ±13.1072
Volts Note 12
Post- Offset Gain Typ 1x, 10x, 100x
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