ZSSC3015 Datasheet, PDF (31/48 Pages) List of Unclassifed Manufacturers – Sensor Signal Conditioner with Diagnostics

ZSSC3015 Datasheet
3.6. EEPROM Bits
Table 3.6 shows the bit order and default settings for the EEPROM, which are programmed through the serial
interface. See section 5 for important information for die/wafer customers.
Table 3.6 ZSSC3015 EEPROM Bits
EEPROM
Range
2:0
Description
ZMDI_cfg
Default
Settings
0HEX
Notes
ZMDI_cfg[0] = Oscillator Frequency – Program to 0.
ZMDI_cfg[1] = Offset_B_sign. Flip the sign of the Offset_B
coefficient to be negative.
ZMDI_cfg[2] = Fast_Startup. Change the command window to be
3.5ms instead of 10ms.
6:3
10:7
1V_Trim/JFET_Trim
A2D_Offset
ssssBIN
where “s” is the part-
specific factory bit
setting for the
reference voltage
trim value.
(Back-up copies are
stored in CUST_ID0
for applications re-
quiring accurate
references. See
section 5 for impor-
tant notes.)
See Table 2.1 in section 2.4.3.
3HEX
(Normal polarity,
positive gain; ADC
offset =
[-1/2,1/2])
The upper two bits are flip polarity and invert bridge input
(negative gain) respectively. If both are used in conjunction,
negative offset modes can be achieved.
00BIN => Normal polarity, positive gain
01BIN => Normal polarity, negative gain
10BIN => Flip polarity, positive gain
11BIN => Flip polarity, negative gain
The lower two bits form the ADC offset selection.
Offset selection:
11BIN => [-1/2,1/2] mode bridge inputs
10BIN => [-1/4,3/4] mode bridge inputs
01BIN => [-1/8,7/8] mode bridge inputs
00BIN => [-1/16,15/16] mode bridge inputs
© 2016 Integrated Device Technology, Inc.
31
January 20, 2016