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Noise performance, Analog output – Measurement Computing BTH-1208LS-OEM User Manual

Page 20

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BTH-1208LS-OEM User's Guide

Specifications

20

Noise performance

Table 6. Noise performance, differential mode

Range

Typical counts

LSBrms

±20 V

3

0.45

±10 V

3

0.45

±5 V

3

0.45

±4 V

4

0.61

±2.5 V

5

0.76

±2 V

7

1.06

±1.25 V

10

1.52

±1 V

12

1.82

Table 7. Noise performance, single-ended mode

Range

Typical counts

LSBrms

±10 V

6

0.91

Analog output

Table 8. Analog output specifications

Parameter

Condition

Specification

Resolution

12-bits, 1 in 4,096

Output range

0 V to 2.5 V

Number of channels

2

Throughput (Note 2)

Software paced

10 S/s single channel typ, PC dependent

Power on and reset voltage

USB operation

Initializes to 000h code

Bluetooth operation

The outputs can be individually configured to
initialize to 000h or to have user configurable
values written to the outputs when the Bluetooth
host is connected or disconnected.

Output current drive

Each D/A OUT

5 mA source capability

Slew rate

0.75 V/ µs typ

Table 9. Analog output accuracy, all values are (±),accuracy tested at no load

Range

Accuracy (LSB)

0 V to 2.5 V

8.0 typ, 73.0 max

Table 10. Analog output accuracy components, all values are (±)

Range

% of FSR

Gain Error at FS (mV) Offset (mV)

Accuracy at FS (mV)

0 V to 2.5 V

0.16 typ,1.44 max

4.0 typ, 36.0 max

1.0 typ, 9.0 max (Note 4)

5.0 typ, 45.0 max

Note 4:

Zero-scale offsets may result in a fixed zero-scale error producing a dead-band digital input code
region. In this case, changes in digital input code at values less than 0x040 may not produce a
corresponding change in the output voltage. The offset error is tested and specified at code 0x040.