CS5012A CS5014 CS5016
16-, 14-, & 12-bit Self-calibrating A/D Converters
Features
Monolithic CMOS A/D Converters
– Microprocessor Compatible
– Parallel & Serial Output
– Inherent Track/Hold Input
Description
The CS5012A/14/16 are 12-, 14-, and 16-bit mono-
lithic analog to digital converters with conversion
times of 7.2
µs,
14.25
µs
and 16.25
µs.
Unique self-
calibration circuitry ensures excellent linearity and
differential nonlinearity, with no missing codes. Off-
set and full-scale errors are kept within 1/2 LSB
(CS5012A/14) and 1 LSB (CS5016), eliminating the
need for calibration. Unipolar and bipolar input
ranges are digitally selectable.
The pin compatible CS5012A/14/16 consist of a
DAC, conversion and calibration microcontroller,
oscillator, comparator, microprocessor-compatible
3-state I/O, and calibration circuitry. The input
track-and-hold, inherent to the devices’ sampling
architecture, acquires the input signal after each
conversion using a fast-slewing, on-chip buffer am-
plifier. This allows throughput rates up to
100 kSps(CS5012A), 56 kSps (CS5014), and
50 kSps (CS5016).
ORDERING INFORMATION
See
“Ordering Information” on page39.
True 12-bit, 14-bit, and 16-bit Precision
Conversion Times
– CS5016: 16.25
µs
– CS5014: 14.25
µs
– CS5012A: 7.20
µs
Linearity Error:
±
0.001% FS
– Guaranteed No Missing Codes
Self-calibration Maintains Accuracy
– Accurate Over Time & Temperature
Low Power Consumption
– 150 mW
Low Distortion
I
HOLD CS
1
23
32
31
-
+
-
+
-
+
24
RD
25
A0 BP/UP RST BW INTRLV CAL
26
27
36
37
38
39
EOT EOC SCLK SDATA
41
42
43
44
2
3
4
5
6
7
8
10
14
16
17
18
19
20
21
22
D0 (LSB) CS5016
D1
D2 (LSB) CS5014
D3
D4 (LSB) CS5012A
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15 (MSB)
CLKIN
REFBUF
VREF
Clock
Generator
Control
Calibration
Memory
Microcontroller
AIN
29
Charge
Redistribution
DAC
-
+
Comparator
Status Register
AGND
30
28
VA+
34
VA-
12
VD+
40
VD-
11
DGND
35
TST
http://www.cirrus.com
Copyright
©
Cirrus Logic, Inc. 2005
(All Rights Reserved)
AUG ‘05
DS14F9
CS5012A CS5014 CS5016
CS5012A
VA-, VD- = -5V; VREF = 2.5V to 4.5V; f
clk
= 6.4 MHz for -7, 4 MHz for -12; Analog Source Impedance = 200Ω)
CS5012A
Parameter*
Specified Temperature Range
Min
Typ
Max
Units
°C
LSB
12
∆LSB
12
LSB
12
∆LSB
12
LSB
12
∆LSB
12
LSB
12
∆LSB
12
LSB
12
∆LSB
12
LSB
12
∆LSB
12
LSB
12
∆LSB
12
-40 to +85
(Note 1)
(Note 2)
(Note 1)
(Note 2)
(Note 1)
(Note 2)
(Note 1)
(Note 2)
(Note 1)
(Note 2)
±1/4
±1/8
±1/2
CS5012A ANALOG CHARACTERISTICS
(T
A
= T
MIN
to T
MAX
; VA+, VD+ = 5V;
Accuracy
Linearity Error
Drift
Differential Linearity
Drift
Full Scale Error
Drift
Unipolar Offset
Drift
Bipolar Offset
Drift
±1/4 ±1/2
±1/32
±1/4 ±1/2
±1/16
±1/4 ±1/2
±1/16
±1/4 ±1/2
±1/16
±1/4 ±1/2
±1/16
±1/4
±1/4
Bipolar Negative Full-Scale Error(Note 1)
Drift
(Note 2)
Total Unadjusted Error
Drift
Peak Harmonic or
Spurious Noise
Full Scale, 1 kHz Input
Full Scale, 12 kHz Input
Total Harmonic Distortion
Signal-to-Noise Ratio
1 kHz, 0 dB Input
1 kHz, -60 dB Input
Noise
Unipolar Mode
Bipolar Mode
(Note 1)
72
(Note 3)
(Note 1)
(Note 2)
(Note 1)
84
84
Dynamic Performance (Bipolar Mode)
92
88
0.008
73
13
45
90
dB
dB
%
dB
dB
µV
rms
µV
rms
Notes: 1. Applies after calibration at any temperature within the specified temperature range.
2. Total drift over specified temperature range since calibration at power-up at 25 °C
3. Wideband noise aliased into the baseband. Referred to the input.
* Refer to
Parameter Definitions
(immediately following the pin descriptions at the end of this data sheet).
Specifications are subject to change without notice.
2
2-8
DS14F9
DS14F8
CS5012A CS5014 CS5016
CS5012A
CS5012A ANALOG CHARACTERISTICS
(continued)
CS5012A
Parameter*
Specified Temperature Range
Min
Typ
Max
Units
°C
ns
ps
pF
pF
pF
pF
µs
µs
kSps
-40 to +85
25
100
(Note 4)
CS5012A
Bipolar Mode
CS5012A
72
96
7.2
2.5
100
2.8
103
137
Analog Input
Aperture Time
Aperture Jitter
Input Capacitance
Unipolar Mode
Conversion & Throughput
Conversion Time
Acquisition Time
Throughput
(Notes 5 and 6)
(Note 6)
(Note 6)
Power Supplies
DC Power Supply Currents
IA+
IA-
D+
(CS5012A)
ID+
ID-
Power Dissipation
Power Supply Rejection
Positive Supplies
Negative Supplies
(Note 7)
12
-12
3
6
-3
(Note 7)
(Note 8)
84
84
dB
dB
150
19
-19
6
7.5
-6
250
mA
mA
mA
mA
mA
mW
Notes: 4. Applies only in track mode. When converting or calibrating, input capacitance will not exceed 15 pF.
5. Measured from falling transition on HOLD to falling transition on EOC.
6. Conversion, acquisition, and throughput times depend on CLKIN, sampling, and calibration conditions.
The numbers shown assume sampling and conversion is synchronized with the CS5012A/14/16 ’s
conversion clock, interleave calibrate is disabled, and operation is from the full-rated, external clock.
Refer to the section
Conversion Time/Throughput
for a detailed discussion of conversion timing.
7. All outputs unloaded. All inputs CMOS levels.
8. With 300 mV p-p, 1 kHz ripple applied to each analog supply separately in bipolar mode. Rejection
improves by 6 dB in the unipolar mode to 90 dB. Figure 13 shows a plot of typical power supply
rejection versus frequency.
DS14F9
DS14F8
3
2-9
CS5012A CS5014 CS5016
CS5014
VA-, VD- = -5V; VREF = 4.5V; CLKIN = 4 MHz for -14, 2 MHz for -28; Analog Source Impedance = 200Ω)
CS5014-B
Parameter*
Specified Temperature Range
Min
Typ
Max
Units
°C
LSB
14
LSB
14
∆LSB
14
LSB
14
∆LSB
14
LSB
14
∆LSB
14
LSB
14
LSB
14
∆LSB
14
LSB
14
LSB
14
∆LSB
14
LSB
14
LSB
14
∆LSB
14
LSB
14
∆LSB
14
-40 to +85
(Note 1)
(Note 2)
(Note 1)
(Note 2)
(Note 1)
(Note 2)
(Note 1)
(Note 2)
(Note 1)
(Note 2)
±1/4 ±1/2
±1/8
±1/4 ±1/2
±1/32
±1/2
±1/4
±1/4
±1/4
±1/4
±1/2
±1/2
Drift
Total Unadjusted Error
Drift
Peak Harmonic or
Spurious Noise
Full Scale, 1 kHz Input
Full Scale, 12 kHz Input
Total Harmonic Distortion
Signal-to-Noise Ratio
1 kHz, 0 dB Input
1 kHz, -60 dB Input
Noise
Unipolar Mode
Bipolar Mode
(Note 3)
45
90
µV
rms
µV
rms
(Notes 1 and 9)
82
84
23
dB
dB
dB
(Note 2)
(Note 1)
(Note 2)
(Note 1)
94
84
98
87
0.003
dB
dB
dB
dB
%
±1/4
±1
±1
±1
±3/4
±1
±3/4
CS5014 ANALOG CHARACTERISTICS
(T
A
= T
MIN
to T
MAX
; VA+, VD+ = 5V;
Accuracy
Linearity Error
Drift
Differential Linearity
Drift
Full Scale Error
Drift
Unipolar Offset
Drift
Bipolar Offset
Drift
Bipolar Negative Full-Scale Error(Note 1)
Dynamic Performance (Bipolar Mode)
Notes: 9. A detailed plot of S/(N+D) vs. input amplitude appears in Figure 26 for the CS5014 and Figure 28
for the CS5016.
* Refer to
Parameter Definitions
(immediately following the pin descriptions at the end of this data sheet).
Specifications are subject to change without notice.
4
2-10
DS14F9
DS14F8
CS5012A CS5014 CS5016
CS5014
CS5014 ANALOG CHARACTERISTICS
(continued)
CS5014
Parameter*
Specified Temperature Range
Min
Typ
Max
Units
°C
ns
ps
375
220
14.25
3.0
55.6
3.75
pF
pF
µs
µs
kSps
-40 to +85
25
100
(Note 4)
275
165
-14
(Notes 5 and 6)
-14
-14
(Note 6)
(Note 6)
Analog Input
Aperture Time
Aperture Jitter
Input Capacitance
Unipolar Mode
Bipolar Mode
Conversion & Throughput
Conversion Time
Acquisition Time
Throughput
Power Supplies
DC Power Supply Currents
IA+
IA-
ID+
ID-
Power Dissipation
Power Supply Rejection
Positive Supplies
Negative Supplies
(Note 7)
9
-9
3
-3
(Note 7)
(Note 8)
84
84
dB
dB
120
19
-19
6
-6
250
mA
mA
mA
mA
mW
DS14F9
DS14F8
5
2-11
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