ADS-CCD1202MC Murata Power Solutions Inc, ADS-CCD1202MC Datasheet - Page 3

• Manufacturer Part Number: ADS-CCD1202MC
• Description: Analog To Digital Converter
• Manufacturer: Murata Power Solutions Inc

TECHNICAL NOTES
1. Obtaining fully specified performance from the ADS-CCD1202
2. ADS-CCD1202 achieves its specified accuracies without
ANALOG OUTPUT
Internal Reference
External Current
DIGITAL OUTPUTS
Logic Levels
Delay, Falling Edge of EOC
Output Coding
POWER REQUIREMENTS, ±15V
Power Supply Range
Power Supply Current
Power Dissipation
Power Supply Rejection
POWER REQUIREMENTS, ±12V
Power Supply Range
Power Supply Current
Power Dissipation
Power Supply Rejection
Footnotes:
requires careful attention to pc-card layout and power supply
decoupling. The device’s analog and digital ground systems are
connected to each other internally. For optimal performance, tie
all ground pins (14, 19, and 23) directly to a large analog
ground plane beneath the package.
OUTPUT (pin 21), to ground with 4.7µF tantalum capacitors in
parallel with 0.1µF ceramic capacitors. Locate the bypass
capacitors as close to the unit as possible. If the user-installed
offset and gain adjusting circuit shown in Figure 2 is used, also
locate it as close to the ADS-CCD1202 as possible.
external calibration. If required, the device’s small initial offset
and gain errors can be reduced to zero using the input circuit of
Figure 2. When using this circuit, or any similar offset and gain-
calibration hardware, make adjustments following warmup. To
avoid interaction, always adjust offset before gain.
Bypass all power supplies, as well as the REFERENCE
®
Voltage
Drift
Logic "1"
Logic "0"
Logic Loading “1"
Logic Loading "0"
to Output Data Valid
+15V Supply
–15V Supply
+5V Supply
+15V Supply
–15V Supply
+5V Supply
+12V Supply
–12V Supply
+5V Supply
+12V Supply
–12V Supply
+5V Supply
All power supplies must be on before applying a start convert pulse. All
supplies and the clock (START CONVERT) must be present during warmup
periods. The device must be continuously converting during this time.
Contact DATEL for availability of other input voltage ranges.
A 200ns wide start convert pulse is used for all production testing.
®
+9.95
+14.5
+4.75
+11.5
+4.75
MIN.
–14.5
–11.5
+2.4
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
+25°C
TYP.
+10.0
+15.0
–15.0
+12.0
–12.0
+5.0
1.75
+5.0
1.45
+43
–48
+82
+43
–48
+82
±5
—
—
—
—
—
—
—
—
+10.05
+15.5
–15.5
+5.25
±0.01
+12.5
–12.5
+5.25
±0.01
MAX.
+0.4
1.95
1.65
+55
+95
+55
+95
–55
–55
1.5
+4
—
—
–4
35
MIN.
+9.95
+14.5
–14.5
+4.75
+11.5
–11.5
+4.75
3.
+2.4
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3. When operating the ADS-CCD1202 from ±12V supplies, do not
4. A passive bandpass filter is used at the input of the A/D for all
5. Applying a start pulse while a conversion is in progress (EOC =
Effective bits is equal to:
0 to +70°C
This is the time required before the A/D output data is valid after
the analog input is back within the specified range.
drive external circuitry with the REFERENCE OUTPUT (pin 21).
The reference’s accuracy and drift specifications may not be
met, and loading the circuit may cause accuracy errors within
the converter.
production testing.
logic "1") initiates a new and inaccurate conversion cycle. Data
for the interrupted and subsequent conversions will be invalid.
Straight Binary
Input Voltage
0 to +10V
TYP.
+10.0
+15.0
–15.0
+12.0
–12.0
(SNR + Distortion) – 1.76 +
+5.0
+5.0
Range
1.75
1.45
+43
+82
+43
–48
+82
–48
±5
—
—
—
—
—
—
—
—
+10.05
MAX.
+15.5
+5.25
±0.01
+12.5
+5.25
±0.01
–15.5
–12.5
+0.4
1.95
1.65
+55
–55
+95
+55
–55
+95
1.5
Table 1. Zero and Gain Adjust
—
—
–4
+4
35
Zero Adjust
+1.2207mV
+1/2 LSB
MIN.
+9.95
+14.5
–14.5
+4.75
+11.5
–11.5
+4.75
+2.4
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
6.02
20 log
–55 to +125°C
TYP.
+10.0
+15.0
–15.0
+12.0
–12.0
Actual Input Amplitude
ADS-CCD1202
+5.0
1.75
+5.0
1.45
+43
+82
+43
–48
+82
–48
Full Scale Amplitude
±5
—
—
—
—
—
—
—
—
+FS – 1 1/2 LSB
Gain Adjust
MAX.
+10.05
+9.99634V
+15.5
–15.5
+5.25
±0.01
+12.5
–12.5
+5.25
±0.01
+0.4
1.95
1.65
+55
–55
+95
+55
–55
+95
1.5
–4
+4
35
—
—
%FSR/%V
%FSR/%V
UNITS
ppm/ºC
Watts
Watts
Volts
Volts
Volts
Volts
Volts
Volts
Volts
Volts
Volts
mA
mA
mA
mA
mA
mA
mA
mA
mA
ns