Ametek Princeton Applied Research PARSTAT 2273 - 4. SPECIFICATIONS AND PINOUTS; 4.1. Electrical Specifications, Potentiostatic Circuitry; 4.1.1. Power Amplifier; 4.1.2. Differential Electrometer

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4. SPECIFICATIONS AND PINOUTS
4.1. Electrical Specifications, Potentiostatic Circuitry
4.1.1. Power Amplifier
Compliance Voltage ±100 V
Maximum Current ±2 A
Rise Time <250 ns (no load) typical
Slew Rate >15 V/µs (no load)
System Performance
! Minimum Time Base: 20 µs
! Minimum Potential Step: 2.5 µV
! Noise and Ripple: <50 µV rms (typical)
! Minimum Current Range: 2 nA (hardware)
! Minimum Current Range: 40 pA (after 50X gain)
! Minimum Current Resolution: 1.2 fA
4.1.2. Differential Electrometer
Input Bias Current <5 pA at 25°C
Max. Voltage Range ±10 V maximum
Input Voltage Differential ±10 V
Bandwidth ! 3 dB @ >15 MHz (typical)
Common Mode Rejection
! >80 dB at 100 Hz
! >60 dB at 100 kHz
Input Impedance typically >10
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Ω in parallel with <5 pF
4.1.3. iR Compensation
Positive Feedback Range: 2000 MΩ to 2 Ω (depending on current range)
Current Interrupt 16-bit DAC potential error correction
4.1.4. Current Measurement
Ranges 12 decades,2Ato40pA(with internal gain applied)
Accuracy (dc)
! 20 µA to 2 A: <0.4% full scale
! 20 nA and 1 µA ranges: <0.5%
! 2 nA: <0.75%
Frequency Response (small signal)
! 2 mA range: ! 3 dB at >1 MHz, 1k source impedance
! 20 µA range: ! 3 dB at >100 kHz, 100k source impedance
4.1.5. Potential/Current Control
Digital/Analog Converters (DACs)
Bias DAC
! Resolution 16 bits
! Range (potentiostat) ±10 V
! Range (galvanostat) ±100% of full-scale current
Modulation DAC
! Resolution 16 bits