Teledyne DA1855A, Operator'S Manual

Page: 13 / 94

Operator’s Manual
922258-00 Rev A 7
Typical Characteristics
Typical characteristics describe parameters, which do not have guaranteed performance. Tests for
typical characteristics are not provided in the Performance Verification Procedure.
Input Resistance
÷1 Attenuator
1 MΩ or 100 MΩ 1 MΩ only when used with
attenuating probe
÷10 Attenuator
1 MΩ
Input Capacitance 20 pF
AC Input Coupling Capacitance
0.1 μF
÷10 Attenuator Accuracy 0.05%
Bandwidth, x10 Gain 100 MHz
Common Mode Rejection Ratio
Refer to Figure 22
Input Noise
Refer to Figure 23
(With DXC100A probe, 100 Ω between tip and
ground)
Overdrive recovery In X10 gain, settles within 1 mV referred to input
within 100 nsec from 4 V input (8000% overdrive)
Output Zero
1
≤ 2 mV referred to input
Input Leakage Current <10 pA (0° C to 45° C)
Differential Offset Accuracy
X10 Gain, ÷1 Attenuator
0.1% + 50 μV
2
X1 Gain, ÷1 Attenuator
0.1% + 500 μV
2
X10 Gain, ÷10 Attenuator
0.15% + 500 μV
2
X1 Gain, ÷10 Attenuator
0.15% + 5 mV
2
Precision Voltage Generator
<75 μV/°C
Temperature Coefficient (power consumption)
DA1855A
≈ 28 W, ≈ 39 VA
DA1855A-PR2
≈ 56 W, ≈ 78 VA
1
Output Zero is the output voltage from zero with zero Volt applied between inputs. This specification is valid within 30
minutes from last Autozero cycle, and when the differential amplifier is operating in an environment with stable ambient
temperature.
2
Voltages are referred to the amplifier input connector. Multiply by probe attenuation factor to obtain value refer to
probe input. (e.g. 0.1% + 50 μV becomes 0.1% + 500 μV at the probe tip when using a ÷10 probe.)