Signametrics
16
2.11 Source Functions (SMX2044)
•
Isolated to 300 V DC from the Chassis
•
Current can be paralleled with multiple SMX2044s
•
Voltage can be put in series with multiple SMX2044s
2.11.1 DC Voltage Source
Parameter
Closed Loop [1]
Open Loop
Output Voltage range
-10.000 V to +10.000 V
Typical Current source/sink at 5V output
5 mA
5 mA
DAC resolution
18 bits
12 bits
Accuracy 23
°
C
±
10
°
C One Year
0.015% ± 350
µ
V
1.0% ± 35 mV
Typical settling time
3 S (rate set to 2/s)
1 mS
Typical source resistance
250
Ω
[1] 10 rps or lower measurement rate is required for the closed loop mode.
2.11.2 AC Voltage Source
Parameter
Closed Loop [1]
Open Loop
Output Voltage, sine wave
50mV to 7.1 V RMS (0.14 to 20.0V peak-to-peak)
DAC resolution
16 bits
12 bits
Typical Current Drive at 3.5V RMS
3.5 mA RMS
Accuracy 18
°
C to 28
°
C One Year
ACV spec ± 2 mV
ACV spec + 0.8% ± 20 mV
Typical settling time (f-out > 40 Hz)
10 s (rate set to 2 rps)
1.5 s
Typical source resistance
250
Ω
Frequency range / resolution
2 Hz to 75 kHz / 2 Hz
Frequency stability
100 ppm ± 1 Hz
[1] 5 rps or lower measurement rate is required for the closed loop mode.
2.11.3 DC Current Source
Range Compliance
Voltage
Resolution [1]
Minimum level
Accuracy 23
°
C
±
10
°
C One Year
1.25
µ
A
4.2 V
500 pA
1
η
A
1% + 10
η
A
12.5
µ
A
4.2 V
5
η
A 10
η
A
1% + 100
η
A
125
µ
A
4.2 V
50
η
A 100
η
A
1% + 500
η
A
1.25 mA
4.2 V
500
η
A 1
µ
A
1% + 5
µ
A
12.5 mA
1.5 V
5
µ
A 10
µ
A
1% + 50
µ
A
[1] Resolution without Trim DAC. The use of the Trim DAC can improve the resolution by a factor of 10, but it has
to be set separately since it is not calibrated.
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