NCD9830
8-Bit, 8-Channel ADC with
I
2
C Serial Interface
The NCD9830 is a two−wire serially programmable analog to
digital converter. It can monitor 8 analog inputs to 8−bit resolution.
Each channel is selected using the I
2
C interface and can also be
configured to be a single ended or differential type measurement.
Communication with the NCD9830 is accomplished via the I
2
C
interface which is compatible with industry standard protocols.
Through this interface configuration of the NCD9830 is achieved.
This allows the user to read the current measurement for the selected
channel, change to an external reference and modify the measurement
type (single ended or differential).
The NCD9830 is available in a 16−lead TSSOP package and
operates over a wide supply range of 2.7 to 5.5 V.
Features
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MARKING
DIAGRAM
16
1
TSSOP−16
DT SUFFIX
CASE 948F
A
L
Y
W
G
1
16
NCD
9830
ALYWG
G
•
•
•
•
•
•
•
•
8−bit ADC
8 Single−ended Inputs/4 Differential Inputs
2.7 V to 5.5 V Operation
Built in 2.5 V Reference
2 Address Selection Pins
Low Power Consumption
I
2
C Compliant Interface
−
Standard, Fast and High Speed Modes
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
(*Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 15 of this data sheet.
©
Semiconductor Components Industries, LLC, 2013
November, 2013
−
Rev. 3
1
Publication Order Number:
NCD9830/D
NCD9830
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
DD
SDA
SCL
A1
A0
COM
REF
IN
/REF
OUT
GND
Figure 1. Pin Configuration (Top View)
A1
13
NCD9830
A0
12
SDA
15
SCL
14
I2C INTERFACE
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
1
2
3
4
5
6
7
8
1
2.5V
Ref
16
VDD
ANALOG
MUX
8−Bit
A−TO−D
CONVERTER
Temporary
Data Storage
9
GND
10
REFIN/REFOUT
Figure 2. Functional Block Diagram of NCD9830
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2
NCD9830
Table 1. PIN FUNCTION DESCRIPTION
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Name
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
GND
REF
IN
/
REF
OUT
COM
A0
A1
SCL
SDA
V
DD
Analog Input.
Analog Input.
Analog Input.
Analog Input.
Analog Input.
Analog Input.
Analog Input.
Analog Input.
Power Supply Ground.
Internal 2.5 V reference or external reference input.
Common to analog input channel (typically connected to GND).
Functions as an I
2
C address selection bit.
Functions as an I
2
C address selection bit.
Serial Clock Input. Open−drain pin; needs a pull−up resistor.
I
2
C Serial Bi−directional Data Input/Output. Open−drain pin; needs a pull−up resistor.
Positive Supply Voltage. Bypass to ground with a 0.1
mF
bypass capacitor.
Description
Table 2. ABSOLUTE MAXIMUM RATINGS
Rating
Supply Voltage (V
DD
)
Analog input voltage to GND
Voltage on any pin (not analog inputs)
Maximum Junction Temperature
Storage Temperature Range
ESD Capability, Human Body Model (Note 1)
ESD Capability, Machine Model (Note 1)
T
J(max)
T
STG
ESD
HBM
ESD
MM
Symbol
V
DD
Value
−0.3
to +6.5
−0.3
to V
DD
+0.3
V
DD
150.7
−65
to 160
3
150
Unit
V
V
V
°C
°C
kV
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. Refer to ELECTRICAL CHARACTERISTICS and APPLICATION INFORMATION for Safe Operating Area.
Table 3. OPERATING RANGES
Rating
Operating Supply Voltage
Operating Ambient Temperature Range
Symbol
V
DD
T
A
Min
2.7
−40
Max
5.5
125
Unit
V
°C
2. Refer to ELECTRICAL CHARACTERISTICS and APPLICATION INFORMATION for Safe Operating Area.
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3
NCD9830
Table 4. ELECTRICAL CHARACTERISTICS
+2.7
V
T
A
=
−40°C
to +125°C, V
DD
= 2.7 V, V
REF
= 2.5 V, SCL Freq = 3.4 MHz, unless otherwise noted.
Parameter
ANALOG INPUT
Full scale input range
Max input range
Positive and negative input
Positive input
Negative input
Capacitance
Leakage Current
SYSTEM PERFORMANCE
No Missing Codes
Integral Linearity Error
Differential Linearity Error
Offset Error
Offset Error Match
Gain Error
Gain Error Match
Noise
Power Supply Rejection
SAMPLING DYNAMICS
Throughput Frequency
High speed mode: SCL = 3.4 MHz
Fast mode: SCL = 400 kHz
Standard mode: SCL = 100 kHz
Conversion Time
AC ACCURACY
Total Harmonic Distortion
Signal−to−Ratio
Signal−to−(Noise+Distortion) Ratio
Spurious Free Dynamic Range
Channel to channel isolation
VOLTAGE REFERENCE OUTPUT
Range
Internal Reference Drift
Output Impedance
Internal reference ON
Internal reference OFF
Quiescent Current
VOLTAGE REFERENCE INPUT
Range
Resistance
Current Drain
DIGITAL INPUT/OUTPUT
High Speed Mode: SCL = 3.4 MHz
0.05
1
20
V
DD
V
GW
mA
Internal Reference ON, SCL and SDA
pulled HIGH
2.475
2.5
15
700
1
850
2.525
V
ppm/°C
W
GW
mA
V
IN
= 2.5 Vpp at 1 kHz
V
IN
= 2.5 Vpp at 1 kHz
V
IN
= 2.5 Vpp at 1 kHz
V
IN
= 2.5 Vpp at 1 kHz
−72
50
49
68
90
dB
dB
dB
dB
dB
5
70
10
2.5
kSPS
kSPS
kSPS
ms
8
±0.1
±0.1
+0.5
±0.05
±0.1
±0.05
100
72
±0.5
±0.5
+1
±0.25
±0.5
±0.25
Bits
LSB
LSB
LSB
LSB
LSB
LSB
mVRMS
dB
0
−0.2
−0.2
25
±1
V
REF
V
DD
+
0.2
0.2
V
V
V
pF
mA
Test Conditions
Min
Typ
Max
Unit
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4
NCD9830
Table 4. ELECTRICAL CHARACTERISTICS
+2.7
V
T
A
=
−40°C
to +125°C, V
DD
= 2.7 V, V
REF
= 2.5 V, SCL Freq = 3.4 MHz, unless otherwise noted.
Parameter
DIGITAL INPUT/OUTPUT
Logic Levels:
V
IH
V
IL
V
OL
Input Leakage:
I
IH
I
IL
POWER SUPPLY REQUIREMENTS
V
DD
Quiescent Current
High speed mode: SCL = 3.4 MHz
Fast mode: SCL = 400 kHz
Standard mode: SCL = 100 kHz
Power Dissipation
High speed mode: SCL = 3.4 MHz
Fast mode: SCL = 400 kHz
Standard mode: SCL = 100 kHz
Power Down Mode (Wrong address selected)
High speed mode: SCL = 3.4 MHz
Fast mode: SCL = 400 kHz
Standard mode: SCL = 100 kHz
Full Power Down
SCL, SDA pulled HIGH
2.7
225
100
60
675
300
180
70
25
6
400
3000
1000
3.6
320
V
mA
mA
mA
mW
mW
mW
mA
mA
mA
nA
Minimum 3 mA sink current
V
IH
= V
DD
+ 0.5
V
IL
= 0 V
−10
0.7 x
V
DD
0
V
DD
+
0.5
0.3 x
V
DD
0.4
10
V
V
V
mA
mA
Test Conditions
Min
Typ
Max
Unit
Table 5. ELECTRICAL CHARACTERISTICS
+5
V
T
A
=
−40°C
to +125°C, V
DD
= 5 V, V
REF
= 5 V (external), SCL Freq = 3.4 MHz, unless otherwise noted.
Parameter
ANALOG INPUT
Full scale input range
Max input range
Positive and negative input
Positive input
Negative input
Capacitance
Leakage Current
SYSTEM PERFORMANCE
No Missing Codes
Integral Linearity Error
Differential Linearity Error
Offset Error
Offset Error Match
Gain Error
Gain Error Match
Noise
Power Supply Rejection
8
±0.1
±0.1
+0.5
±0.05
±0.1
±0.05
100
72
±0.5
±0.5
+1
±0.25
±0.5
±0.25
Bits
LSB
LSB
LSB
LSB
LSB
LSB
mVRMS
dB
0
−0.2
−0.2
25
±1
V
REF
V
DD
+
0.2
0.2
V
V
V
pF
mA
Test Conditions
Min
Typ
Max
Unit
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