Bridge Amp
Owner’s Guide
50
Frequency response (–3 dB): 2 kHz maximum at all gains with the low-pass
filter off
CMRR (differential):
100 dB @ 50 Hz (typical)
Input noise:
<1 μV
rms
referred to input at highest gain
Excitation and Zeroing
Excitation voltage range:
0–20 volts DC (±10 V referred to ground),
adjusted by external resistor
Transducer drive current:
±45 mA maximum
Zeroing circuitry:
Software-controlled, either manual or automatic
Internal offsetting range:
±10 V (1 V–5 V range)
±1 V (100 mV–500 mV range)
±100 mV (200 μV–50 mV)
Internal offset resolution:
16-bit (internal DAC) ±32 000 steps about 0 V.
1, 2, 5 V - 310 μ V/step
100 mV, 200 mV, 500 mV - 31 μ V/step
200 μV to 50 mV - 3 μV/step
Control Port
I
2
C port:
Power and control bus for front-end units.
Supports a number of front-ends dependent on
the PowerLab. Interface communications rate of
~50 kbits/s.
Physical Configuration
Weight and Dimensions (h
×
w
×
d):
Single (ML221):
50 mm
×
76 mm
×
260 mm (1.97"
×
3.0"
×
10.2");
710 g
Quad (ML224):
60 mm
×
200 mm
×
250 mm (2.36"
×
7.9"
×
9.8");
1.5 kg
Octal (ML228):
60 mm
×
300 mm
×
300 mm (2.36"
×
11.8"
×
11.8");
3.4 kg
Power requirements:
0.8 W (ML221); 2.5 W (ML224); 5.0 W (ML228)
(without transducer attached)
Operating conditions:
5–35 °C, 0–90% humidity (non-condensing)
ADInstruments reserves the right to alter these specifications at any time.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
