BTH-1208LS User's Guide
Specifications
22
Table 7. Noise performance, single-ended mode
Range
Typical counts
LSB
rms
±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 4)
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 5:
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.
Digital input/output
Table 11. Digital I/O specifications
Parameter
Specification
Digital type
3.3 V open drain
Output value mapping
0 written: output drives to DGND
1 written: output is pulled up to 3.3 V via internal resistor
Number of I/O
8
Configuration
Individually configurable
Input voltage range
0 V to 5.5 V (Note 6)
Pull up/pull-down configuration
47.5 k
Ω pull
-up resistors (to 3.3 V), 2.2 k
Ω series resisto
rs
Input high voltage threshold
2.0 V min
Input high voltage limit
5.5 V absolute max
Input low voltage threshold
0.8 V max
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