X9530B15I XICOR [Xicor Inc.], X9530B15I Datasheet - Page 25

• Manufacturer Part Number: X9530B15I
• Description: Temperature Compensated Laser Diode Controller
• Manufacturer: XICOR [Xicor Inc.]

X9530
A/D CONVERTER CHARACTERISTICS
All typical values are for 25°C ambient temperature and 5 V at pin Vcc. Maximum and minimum specifications are over the
recommended operating conditions. All voltages are referred to the voltage at pin Vss unless otherwise specified. All bits in
control registers are “0” unless otherwise specified.
R2 and Vss unless otherwise specified. 400kHz TTL input at SCL unless otherwise specified. SDA pulled to Vcc through an external
2K¾ resistor unless otherwise specified. 2-wire interface in “standby” (see notes 1 and 2 on page 22), unless otherwise specified. WP ,
A0, A1, and A2 floating unless otherwise specified.
Notes: 1. “LSB” is defined as V(VRef)/63, “Full Scale” is defined as V(VRef).
REV 3.7 8/26/04
ADCTIME
RIN
CIN
VIN
Offset
FSError
DNL
INL
TempStep
Out25
Symbol
ADC
ADC
ADC
ADC
ADC
2. Offset
3. These parameters are periodically sampled and not 100% tested.
ADC
ADC
ADC
amount of deviation between the measured first transition point and the ideal point.
amount of deviation between the measured last transition point and the ideal point,
after subtracting the Offset from the measured curve.
expressed in LSBs. The measured transfer curve is adjusted for Offset and Fullscale errors before calculating DNL.
defined as the sum of the DNL errors starting from code 00h to the code where the INL measurement is desired. The measured
transfer curve is adjusted for Offset and Fullscale errors before calculating INL.
FSError
DNL
INL
ADC
ADC
ADC
ADC
: The deviation of the measured transfer function of an A/D converter from the ideal transfer function. The INL error is also
ADC
: DNL is defined as the difference between the ideal and the measured code transitions for successive A/D code outputs
: For an ideal converter, the first transition of its transfer curve occurs at
A/D converter conversion
time
VSense pin input
resistance
VSense pin input
capacitance
VSense input signal range
A/D converter offset error
A/D converter full scale
error
A/D Converter Differential
Nonlinearity
A/D converter Integral
Nonlinearity
Temperature step causing
one step increment of
ADC output
ADC output at 25°C
: For an ideal converter, the last transition of its transfer curve occurs at
Parameter
-0.25
Min
510¾, 0.1%,
100
-0.5
-0.5
2.1
-1
1
0
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011101
Typ
2.2
resistor connected between R1 and Vss, and another between
2
V(VRef)
Max
0.25
0.5
0.5
2.3
9
7
1
Unit
LSB
LSB
LSB
LSB
ms
k
pF
°C
[
V
Ω
Characteristics subject to change without notice.
3
1
/
[
2
251
x V(VRef)
255
Proportional to A/D converter
input voltage. This value is
maximum at full scale input
of A/D converter.
ADCfiltOff = “1”
VSense as an input,
ADCIN bit = “1”
VSense as an input,
ADCIN bit = “1”,
Frequency = 1 MHz
See note 3.
This is the A/D Converter
Dynamic Range. ADCIN bit = “1”
See notes 1 and 2
1
/
2
Test Conditions / Notes
255
x V(VRef)
]
above zero. Offset error is the
]
. Full Scale Error is the
25 of 30