ZMD31020
Sensor Signal Conditioner
Datasheet
3.3.7 11-bit Output DAC & Output BUFFER (2)
PARAMETER
Output current
Analog output offset voltage
SYMBOL
IOUT
CONDITIONS
MIN
2
TYP
MAX
UNIT
mA
current source & sink
VOUT_OFF
-10
-10
-1
10
10
1
mV
Temp.-coeff output offset voltage TCOUT_OFF
µV/K
LSB
LSB
VDDA
VDDA
VDDA
VDDA
DAC differential nonlinearity
DAC integral nonlinearity
Maximal output voltage
Minimal output voltage
VOUT low scale limit
DNLOUT
INLOUT
to best-fit straight line
IOUTSOURCE = 2mA
IOUTSINK = -2mA
dig. ref.: pmin
-4
4
VOUT_MAX
VOUT_MIN
VOUT_LSL
VOUT_HSL
RL_OUT
0.975
0.025
0.25
1
0
VOUT low scale limit
dig. ref.: pmax
0.75
2.5
10
Load resistance
kΩ
Load capacitance
CL_OUT
25
nF
3.3.8 Total System
PARAMETER
Startup time
SYMBOL
CONDITIONS
power up to 1st result
MIN
TYP
MAX
UNIT
tSTA
tRESP
tCYC
NL
40
11
ms
ms
Response time
Conversion cycle time
Non-linearity
10
ms
to best-fit straight line
-2500
+2500
20
ppm (3)
ppm/K
ppm/K
TC sensor signal
TC temperature
TCp
TCT
100
Notes for the electrical parameters:
1)
2)
No measurement in mass production, parameter is guarantied by design.
During normal operation mode using the analog output the I2C interface allows to read out the output
digital value in parallel (= the digital input of the DAC).
3)
4)
Analog Signal Conditioning and Analog Digital Conversion for Measurement of the Pressure Sensor
Bridge
The A/D conversion of the temperature signal is done with 10 bit resolution only.
Copyright © 2004, ZMD AG, Rev. 1.6, 2005-05-19
14/19
All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior
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ZMD [ Zentrum Mikroelektronik Dresden AG ]
