TS7003
A 300ksps, Single-supply, 12-Bit Serial-output ADC
FEATURES
Pin-Compatible, Single-channel Higher-Speed
Upgrade to MAX1286
Single-Supply Operation: +2.7V to +3.6V
DNL & INL: ±1LSB (max)
300ksps Sampling Rate
Low Conversion-Mode Supply Current:
0.95mA @ 300ksps
Low Supply Current in Shutdown: 0.2µA
Internal 10-MHzTrack-and-Hold
Internal ±0.6%, 30ppm/ºC +2.5V Reference
SPI/QSPI/MICROWIRE 3-Wire Serial-Interface
8-Pin, 3mm x 3mm TDFN-EP Package
DESCRIPTION
The TS7003 – a single-supply, single-channel, 12-bit
analog-to-digital converter (ADC) - is a successive-
approximation ADC that combines a high-bandwidth
track-and-hold (T/H), a high-speed serial digital
interface, an internal +2.5V reference, and low
conversion-mode power consumption. The TS7003
operates from a single +2.7V to+3.6V supply and
draws less than 1mA at 300ksps.
Connecting
directly
to
any
SPI™/QSPI™/
MICROWIRE™ microcontrollers and other interface-
compatible computing devices, the TS7003’s 3-wire
serial interface is easy to use and doesn’t require
separate, external logic. An external serial-interface
clock controls the TS7003’s conversion process and
its output shift register operation.
In PCB-space-conscious, low-power remote-sensor
and data-acquisition applications, the TS7003 is an
excellent choice for its low-power, ease-of-use, and
small-package-footprint attributes.
As a pin-compatible and higher-speed upgrade to the
MAX1286, the TS7003 is fully specified over the -
40°C to +85°C temperature range and is available in
a low-profile, 8-pin 3x3mm TDFN package with an
exposed back-side paddle.
APPLICATIONS
Process Control and Factory Automation
Data and Low-frequency Signal Acquisition
Portable Data Logging
Pen Digitizers & Tablet Computers
Medical Instrumentation
Battery-powered Instruments
FUNCTIONAL BLOCK DIAGRAM
Page 1
© 2014 Silicon Laboratories, Inc. All rights reserved.
TS7003
ABSOLUTE MAXIMUM RATINGS
V
DD
to GND.................................................................... -0.3V to +6V
AIN to GND ...................................................... -0.3V to (V
DD
+ 0.3V)
REF to GND ..................................................... -0.3V to (V
DD
+ 0.3V)
Digital Inputs to GND .................................................... -0.3V to +6V
DOUT to GND .................................................. -0.3V to (V
DD
+ 0.3V)
DOUT Current ........................................................................ ±25mA
Continuous Power Dissipation (T
A
= +70°C):
8-Pin TFDN33-EP (Derate 12.5mW/°C above +70°C) . 1000mW
Operating Temperature Ranges:
TS7003I .............................................................. -40°C to +85°C
Storage Temperature Range .................................. -60°C to +150°C
Lead Temperature (Soldering, 10s)....................................... +300°C
Soldering Temperature (Reflow) ........................................... +260°C
Electrical and thermal stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These
are stress ratings only and functional operation of the device at these or any other condition beyond those indicated in the operational sections
of the specifications is not implied. Exposure to any absolute maximum rating conditions for extended periods may affect device reliability and
lifetime.
PACKAGE/ORDERING INFORMATION
ORDER NUMBER
PART
CARRIER QUANTITY
MARKING
TS7003ITD833
7003I
TS7003ITD833T
Tape
& Reel
Tape
& Reel
-----
3000
Lead-free Program:
Silicon Labs supplies only lead-free packaging.
Consult Silicon Labs for products specified with wider operating temperature ranges.
Page 2
TS7003 Rev. 1.0
TS7003
ELECTRICAL SPECIFICATIONS
V
DD
= +2.7V to +3.6V; f
SCLK
= 4.8MHz, 50% duty cycle, 16 clocks/conversion cycle, 300ksps; 4.7μF capacitor at
REF; T
A
= -40ºC to +85ºC, unless otherwise noted. Typical values apply at T
A
= +25°C.
PARAMETER
DC ACCURACY
(See Note 1)
Resolution
Relative Accuracy
Differential Nonlinearity
Offset Error
Gain Error
Gain-Error Temperature Coefficient
SYMBOL
CONDITIONS
MIN
12
INL
DNL
ZE
GE
TCGE
See Note 2
No missing codes over temperature
See Note 3
±1.6
70
-80
80
76
10
300
3.3
625
10
< 50
0.5
40
0
10
2.485
2.50
15
30
3
2.515
4.8
60
VREF
±1.0
±1.0
±6.0
±6.0
TYP
MAX
UNITS
Bits
LSB
LSB
LSB
LSB
ppm/°C
dB
dB
dB
dB
MHz
kHz
μs
ns
ns
ps
MHz
%
V
pF
V
mA
ppm/°C
mV/mA
μF
V
V
V
μA
pF
V
V
μA
pF
3.6
1.25
2
±2.5
V
mA
μA
mV
DYNAMIC SPECIFICATIONS
(f
IN
= 75kHz sine wave, 2.5V
PP
, f
SAMPLE
= 300ksps, f
SCLK
= 4.8MHz)
Signal-to-Noise
SINAD
Plus Distortion Ratio
Total Harmonic Distortion
THD
Including the 5th harmonic
Spurious-Free Dynamic Range
SFDR
Intermodulation Distortion
IMD
f
A
= 73kHz, f
B
= 77kHz
Full-Power Bandwidth
FPBW
-3dB point
Full-Linear Bandwidth
FLBW
SINAD > 68dB
CONVERSION RATE
Conversion Time
t
CONV
See Note 4
Track/Hold Acquisition Time
t
ACQ
Aperture Delay
t
AD
Aperture Jitter
t
AJ
Serial Clock Frequency
t
SCLK
Duty Cycle
ANALOG INPUT (AIN)
Input Voltage Range
V
IN
Input Capacitance
C
INA
INTERNAL REFERENCE
REF Output Voltage
VREF
REF Short-Circuit Current
T
A
= +25°C
REF Output Tempco
TCVREF
Load Regulation
See Note 5; 0 to 0.75mA output load
Capacitive Bypass at REF
DIGITAL INPUTS (SCLK, CS, SHDN)
Input High Voltage
V
INH
Input Low Voltage
V
INL
Input Hysteresis
V
HYST
Input Leakage
I
IN
V
INL
= 0V or V
INH
= V
DD
Input Capacitance
C
IND
DIGITAL OUTPUT (DOUT)
Output Voltage Low
V
OL
I
SINK
= 5mA
Output Voltage High
V
OH
I
SOURCE
= 0.5mA
Three-State Leakage Current
I
L
V
CS
= +3V
Three-State Output Capacitance
C
OUT
V
CS
= +3V
POWER SUPPLY
Positive Supply Voltage
V
DD
See Note 6
Positive Supply Current
I
DD
See Note 7; V
DD
= +3.6V
Shutdown Supply Current
I
SHDN
SCLK = V
DD
, SHDN = GND
Power-Supply Rejection
PSR
V
DD
= +2.7V to 3.6V, midscale input
4.7
2.4
5
10
0.8
0.2
±1
15
0.4
V
DD
- 0.5
±10
15
2.7
0.95
0.2
±0.5
TS7003 Rev. 1.0
Page 3
TS7003
TIMING SPECIFICATIONS
V
DD
= +2.7V to +3.6V, T
A
= -40ºC to +85ºC, unless otherwise noted.
PARAMETER
SCLK Period
SCLK Pulse-Width High
SCLK Pulse-Width Low
CS Fall to SCLK Rise Setup
SCLK Rise to CS Rise Hold
SCLK Rise to CS Fall Ignore
CS Rise to SCLK Rise Ignore
SCLK Rise to DOUT Hold
SCLK Rise to DOUT Valid
CS Rise to DOUT Disable
CS Fall to DOUT Enable
CS Pulse-Width High
SYMBOL
t
CP
t
CH
t
CL
t
CSS
t
CSH
t
CSO
t
CS1
t
DOH
t
DOV
t
DOD
t
DOE
t
CSW
CONDITIONS
MIN
208
83
83
45
0
45
45
13
13
100
TYP
MAX
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
C
LOAD
= 20pF
C
LOAD
= 20pF
C
LOAD
= 20pF; Refer to Figure 2
C
LOAD
= 20pF; Refer to Figure 1
100
85
85
Note 1:
Tested at V
DD
= V
DD(MIN)
.
Note 2:
Relative accuracy is the deviation of the analog value at any code from its theoretical value after the full-scale range has been
calibrated.
Note 3:
Internal reference, offset, and reference errors nulled.
Note 4:
Conversion time is defined as the number of clock cycles multiplied by the clock period; clock has 50% duty cycle.
Note 5:
External load should not change during conversion for specified accuracy. Guaranteed specification limit of 2mV/mA because of
production test limitations.
Note 6:
Electrical characteristics are guaranteed from V
DD(MIN)
to V
DD(MAX)
. For operations beyond this range, see Typical Operating
Characteristics.
Note 7:
TS7003 tested with 20pF on DOUT and f
SCLK
= 4.8MHz, 0 to 3V. DOUT = full scale.
Page 4
TS7003 Rev. 1.0
TS7003
TYPICAL PERFORMANCE CHARACTERISTICS
V
DD
= +3V; f
SCLK
= 4.8MHz; C
LOAD
= 20pF; 4.7μF capacitor at REF; T
A
= 25ºC, unless otherwise noted.
Integral Nonlinearity
0.4
0.3
0.2
DNL - LSB
INL - LSB
0.1
0
-0.1
-0.2
-0.3
-0.4
0
1k
2k
3k
4k
5k
0.25
0.2
0.15
0.2
0.05
0
-0.05
-0.1
-0.15
-0.2
-0.25
0
1k
2k
3k
4k
5k
Differential Nonlinearity
DIGITAL OUTPUT CODE
Offset Error vs Supply Voltage
-0.2
-0.4
OFFSET ERROR - LSB
-0.6
-0.8
-1
-1.2
-1.4
-1.6
-1.8
2.7
2.88
3.06
3.24
3.42
3.6
OFFSET ERROR - LSB
1
0.5
0
-0.5
-1
-1.5
-2
-40
DIGITAL OUTPUT CODE
Offset Error vs Temperature
-15
10
35
60
85
POWER SUPPLY VOLTAGE - Volt
TEMPERATURE - ºC
Gain Error vs Temperature
1.2
1
GAIN ERROR - LSB
0.8
0.6
0.4
0.2
0
-0.2
Gain Error vs Supply Voltage
1.2
1
GAIN ERROR - LSB
0.8
0.6
0.4
0.2
0
-0.2
2.7
2.88
3.06
3.24
3.42
3.6
-0.4
-40
-15
10
35
60
85
POWER SUPPLY VOLTAGE - Volt
TEMPERATURE - ºC
TS7003 Rev. 1.0
Page 5
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