ADC-HX, ADC-HZ Series

ADC-HX, ADC-HZ Series
12-Bit, 8 and 20μsec Analog-to-Digital Converters
PRODUCT OVERVIEW
The ADC-HX and ADC-HZ Series are selfcontained, high-performance, 12-bit A/D converters manufactured with thick and thin-film hybrid
technology. They use the successive approximation
conversion technique to achieve a 12-bit conversion in 20 and 8 microseconds, respectively. Five
input voltage ranges are programmable by external
pin connection. An internal buffer amplifier is also
provided for applications in which 50 megohm
input impedance is required.
These converters utilize a fast 12-bit monolithic
DAC which includes a precision zener reference
source. The circuit also contains a fast monolithic comparator, a monolithic 12-bit successive
approximation register, a clock and a monolithic
buffer amplifier. Nonlinearity is specified at
±1/2LSB maximum.
FEATURES
„ 12-bit resolution
„ 8 or 20 microsecond conversion times
„ 5 input voltage ranges
„ Internal high Z input buffer
„ Short-cycle operation
„ MIL-STD-883 models available
BUFFER 30
INPUT
+15V POWER
–15V POWER
REF. OUT
+5V POWER
28
31
18
16
+
Both models have identical operation except for
conversion speed. They can be short-cycled to give
faster conversions in lower-resolution applications. Use of the internal buffer amplifier increases
conversion time by 3 microseconds, the settling
time of the amplifier. Output coding is complementary binary, complementary offset binary, or
complementary two’s complement. Serial data is
also brought out. The package is a 32-pin ceramic
TDIP. Models are available for use in commercial
(0 to +70°C), industrial (–40 to +100°C), or military
(–55 to +125°C) operating temperature ranges.
MIL-STD-883 and DESC Standard Military Drawing
models are also available.
INPUT/OUTPUT CONNECTIONS
Pin
Function
Pin
Function
1
BIT 12 (LSB)
32
SERIAL DATA OUTPUT
2
BIT 11
31
–15V POWER
3
BIT 10
30
BUFFER INPUT
4
BIT 9
29
BUFFER OUTPUT
5
BIT 8
28
+15V POWER
6
BIT 7
27
GAIN ADJUST
7
BIT 6
26
ANALOG COMMON
8
BIT 5
25
20V INPUT RANGE
9
BIT 4
24
10V INPUT RANGE
10
BIT 3
23
BIPOLAR OFFSET
11
BIT 2
22
COMPARATOR INPUT
12
BIT 1 (MSB)
21
START CONVERT
13
BIT 1 (MSB)
20
E.O.C. (STATUS)
14
SHORT CYCLE
19
CLOCK OUT
15
DIGITAL COMMON
18
REFERENCE OUT
16
+5V POWER
17
CLOCK RATE
BUFFER
AMPLIFIER
6.3kW
GAIN
27 ADJUST
PRECISION
REF (+6.3V)
BUFFER 29
OUTPUT
BIPOLAR
23
OFFSET
15
12-BIT DAC
COMPARATOR 22
INPUT
COMPARATOR
5kW
10V
24
INPUT
14 SHORT
CYCLE
SUCCESSIVE
APPROXIMATION
REGISTER
5kW
20V
25
INPUT
ANALOG
26
COMMON
DIGITAL
COMMON
20
E.O.C.
STATUS
CLOCK
17
CLOCK
RATE
19
CLOCK
OUT
21
START
CONV.
2
3
4
5
6
7
8
9 10 11 12
12 11
LSB.
1
10
9
8
7
6
5
4
3
BIT NO.
2
1
13
1
MSB MSB
32
SERIAL
DATA
OUT
PARALLEL DATA OUT
Figure 1. Functional Block Diagram
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
• Tel: (508) 339-3000
•
www.datel.com
•
e-mail: [email protected]
ADC-HXHZ.C01 Page 1 of 7
ADC-HX, ADC-HZ Series
12-Bit, 8 and 20μsec Analog-to-Digital Converters
ABSOLUTE MAXIMUM RATINGS
PARAMETERS
+15V Supply, Pin 28
–15V Supply, Pin 31
+5V Supply, Pin 16
Digital Inputs, Pins 14, 21
Analog Inputs, Pins 24, 25
Buffer Input, Pin 30
Lead Temperature (10 seconds)
POWER REQUIREMENTS
LIMITS
UNITS
+18
–18
+7
±5.5
±25
±15
300
Volts
Volts
Volts
Volts
Volts
Volts
°C
Power Supply Voltages
PHYSICAL/ENVIRONMENTAL
Operating Temp. Range, Case
Storage Temperature Range
Package Type
Weight
Thermal Impedance
θJC
θJA
Functional Specifications
(Typical at +25°C and ±15V and +5V supplies unless otherwise noted)
INPUTS
ADC-HX12B
Analog Input Ranges
Unipolar
Bipolar
Input Impedance
Input Impedance with Buffer
Input Bias Current of Buffer
Start Conversion
ADC-HZ12B
0 to +5V, 0 to +10V
±2.5V, ±5V, ±10V
2.5k (0 to +5V, ±2.5V)
5k (0 to +10V, ±5V)
10k (±10V)
50 megohms
125nA typical, 250nA max.
+2V min. to +5.5V max. positive pulse with duration of 100ns min. Rise and fall times <30ns.
Logic "1" to "0" transition resets converter and
initiates next conversion. Loading: 2 TTL loads.
PERFORMANCE
Resolution
Nonlinearity
Differential Nonlinearity
Accuracy Error ➀
Gain (before adjustment)
Zero, Unipolar (before adj.)
Offset, Bipolar (before adj.)
Temperature Coefficient
Gain
Zero, Unipolar
Offset, Bipolar
Diff. Nonlinearity Tempco
No Missing Codes
Conversion Time ➂
12 Bits
10 Bits ➃
8 Bits ➃
Buffer Settling Time (10V step)
Power Supply Rejection
12 bits
±1/2LSB max.
±3/4LSB max.
Adjustable to zero.
➁
FSR is full scale range and is 10V for 0 to +10V or ±5V inputs and 20V for
±10V input, etc.
➂
Without buffer amplifier used. ADC-HZ may require external adjustment
of clock rate.
➃
Short cycled operation.
➄
All digital outputs can drive 2 TTL loads.
TECHNICAL NOTES
1.
It is recommended that the ±15V power input pins both be bypassed to ground with a 0.01μF ceramic
capacitor in parallel with a 1μF electrolytic capacitor and the +5V power input pin be bypassed to ground
with a 10μF electrolytic capacitor as shown in the connection diagrams. In addition, GAIN ADJUST (pin 27)
should be bypassed to ground with a 0.01μF ceramic capacitor. These precautions will assure noise free
operation of the converter.
2.
DIGITAL COMMON (pin 15) and ANALOG COMMON (pin 26) are not connected together internally, and
therefore must be connected as directly as possible externally. It is recommended that a ground plane be
run underneath the case between the two commons. Analog ground and ±15V power ground should be
run to pin 26 whereas digital ground and +5V ground should be run to pin 15.
3.
External adjustment of zero or offset and gain are made by using trimming potentiometers connected as
shown in the connection diagrams. The potentiometer values can be between 10k and 100k Ohms and
should be 100ppm/°C cermet types. The trimming pots should be located as close as possible to the converter to avoid noise pickup. In some cases, for example 8-bit short-cycled operation, external adjustment
may not be necessary.
4.
Short-cycled operation results in shorter conversion times when the conversion is truncated to less than
12 bits. This is done by connecting SHORT CYCLE (pin 14) to the output bit following the last bit desired.
For example, for an 8-bit conversion, pin 14 is connected to the bit 9 output. Maximum conversion times
are given for short-cycled conversions of 8 or 10 bits. In these two cases, the clock rate is accelerated by
connecting the CLOCK RATE adjust (pin 17) to +5V (10 bits) or +15V (8 bits). The clock rate should not be
arbitrarily speeded up to exceed the maximum conversion rate at a given resolution, as missing codes will
result.
5.
Note that output coding is complementary coding. For unipolar operation it is complementary binary, and
for bipolar operation it is complementary offset binary or complementary two’s complement. In cases in
which bipolar coding of offset binary or two’s complement is required, this can be achieved by inverting the
analog input to the converter (using an op amp connected for gain of –1). The converter is then calibrated
so that –FS analog input gives an output code of 0000 0000 0000, and +FS – 1LSB gives 1111 1111 1111.
6.
These converters can be operated with an external clock. To accomplish this, a negative pulse train is
applied to START CONVERT (pin 21). The rate of the external clock must be lower than the rate of the
internal clock as adjusted (see Short Cycle Operation tables) for the converter resolution selected. The
pulse width of the external clock should be between 100 and 300 nanoseconds. Each N-bit conversion
cycle requires a pulse train of N + 1 clock pulses for completion, e.g., an 8-bit conversion requires 9 clock
pulses for completion. A continuous pulse train may be used for consecutive conversions, resulting in an
N-bit conversion every N + 1 pulses, or the E.O.C. output may be used to gate a continuous pulse train for
single conversions.
7.
When the input buffer amplifier is used, a delay equal to its settling time must be allowed between the input
level change, such as a multiplexer channel change, and the negative-going edge of the START CONVERT
pulse. If the buffer is not required, BUFFER INPUT (pin 30) should be tied to ANALOG COMMON (pin 26). This
prevents the unused amplifier from introducing noise into the converter. For applications not using the buffer,
the converter must be driven from a source with an extremely low output impedance.
±20ppm/°C max.
±5ppm/°C of FSR max. ➁
±10ppm/°C of FSR max. ➁
±2ppm/°C of FSR max. ➁
Over opererating temperature range
8μs max.
6μs max.
4μs max.
Unipolar Coding
Bipolar Coding
Serial Output Data
End of Conversion (Status)
Clock Output
Internal Reference
Reference Tempco
External Reference Current
12 parallel lines of data held until next
conversion command.
VOUT ("0") ≤ +0.4V
VOUT ("1") ≥ +2.4V
Complementary binary
Complementary offset binary
Complementary two’s complement
NRZ successive decision pulses out, MSB first.
Compl. binary or compl. offset binary coding.
Conversion status signal. Output is logic "1"
during reset and conversion and logic "0"
when conversion complete.
Train of positive going +5V 100ns pulses.
600kHz for ADC-HX and 1.5MHz for
ADC-HZ (pin 17 grounded).
+6.3V
±20ppm/°C max.
2.5mA max.
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
6°C/W
30°C/W
➀
OUTPUTS ➄
Parallel Output Data
0 to +70°C, –40 to +100°C, –55 to +125°C
–65 to +150°C
32-pin ceramic TDIP
0.5 ounces (14 grams)
Footnotes:
±0.2%
±0.1% of FSR ➁
±0.2% of FSR ➁
20μs max.
15μs max.
10μs max.
3μs to ±0.01%
±0.004%/% supply max.
+15V ±0.5V at +20mA
–15V ±0.5V at –25mA
+5V ±0.25V at +85mA
• Tel: (508) 339-3000
•
www.datel.com
•
e-mail: [email protected]
ADC-HXHZ.C01 Page 2 of 7
ADC-HX, ADC-HZ Series
12-Bit, 8 and 20μsec Analog-to-Digital Converters
CODING TABLES
UNIPOLAR OPERATION
INPUT RANGE
BIPOLAR OPERATION
COMP. BINARY CODING
0 TO +10V
0 TO +5V
MSB
+9.9976V
+4.9988V
+8.7500
+ 7.5000
LSB
INPUT VOLTAGE RANGE
COMP. OFFSET BINARY
MSB
COMP. TWO’S COMPLEMENT
+10V
+5V
+2.5V
LSB
0000 0000 0000
+9.9951V
+4.9976V
+ 2.4988V
MSB
+4.3750
0001 1111 1111
+7.5000
+3.7500
+ 1.8750
0001 1111 1111
1001 1111 1111
+3.7500
0011 1111 1111
+5.0000
+2.5000
+ 1.2500
0011 1111 1111
1011 1111 1111
+5.0000
+2.5000
0111 1111 1111
0.0000
0.0000
0.0000
0111 1111 1111
1111 1111 1111
+2.5000
+ 1.2500
1011 1111 1111
-5.0000
-2.5000
-1.2500
1011 1111 1111
0011 1111 1111
+ 1.2500
+0.6250
1101 1111 1111
-7.5000
-3.7500
-1.8750
1101 1111 1111
0101 1111 1111
+0.0024
+ 0.0012
1111 1111 1110
-9.9951
-4.9976
-2.4988
1111 1111 1110
0111 1111 1110
0.0000
0.0000
1111 1111 1111
-10.0000
-5.0000
-2.5000
1111 1111 1111
0111 1111 1111
0000 0000 0000
LSB
1000 0000 0000
SHORT CYCLE OPERATION
Refer to Technical Note 4 for methods of reducing the ADC-HX or ADC-HZ conversion times.
CONNECTIONS
8, 10 & 12-BIT CONVERSION TIMES
16
17
+5V
RESOLUTION
12 BITS
10 BITS
8 BITS
15
CLOCK
RATE
+15V
ADC-HX Conversion Time
20μs
15μs
10μs
ADC-HZ Conversion Time
8μs
6μs
4μs
17 & 15
17 & 16
17 & 28
14 & 16
14 & 2
14 & 4
14
Connect These Pins Together
SHORT
CYCLE
TO SELECTED
DATA OUTPUT PIN
PIN 14 CONNECTION
CLOCK RATE VS. VOLTAGE
CLOCK RATE
RES. (BITS)
PIN 14 TO
RES. (BITS)
PIN 14 TO
1
PIN 11
7
PIN 5
2
PIN 10
8
PIN 4
PIN 17
VOLTAGE
ADC-HX
ADC-HZ
3
PIN 9
9
PIN 3
0V
+5V
+15V
600kHZ
720kHZ
880kHz
1.5MHZ
1.8MHz
2.2MHz
4
PIN 8
10
PIN 2
5
PIN 7
11
PIN 1
6
PIN 6
12
PIN 16
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
• Tel: (508) 339-3000
•
www.datel.com
•
e-mail: [email protected]
ADC-HXHZ.C01 Page 3 of 7
ADC-HX, ADC-HZ Series
12-Bit, 8 and 20μsec Analog-to-Digital Converters
START
CONVERT IN
+5V
+
10µF
+5V COMMON
DATA
OUTPUTS
16
15
14
13
12
11
10
9
8
17
18
19
20
21
22
23
24
25
ADC-HX
OR
ADC-HZ
7
6
5
4
26
27
28
29
3
30
2
1
31
32
+15V
ZERO
ADJUST
2.2MW
0.01µF
+
10kW
TO
100kW
2.8MW
0.01
µF
GAIN
ADJUST
ANALOG INPUT
(–5 TO +5V)
15V
COMMON
10kW
TO
100kW
–15V
0.01
µF
+
0.01µF CAPS ARE CERAMIC TYPES
1µF
CAP
Figure 2. Unipolar Operation, 0 to +10V
START
CONVERT IN
+5V
+
10µF
+5V COMMON
DATA
OUTPUTS
16
15
14
13
12
11
10
9
8
ADC-HX
OR
ADC-HZ
17
18
19
20
21
22
23
24
25
7
6
5
4
26
27
28
29
3
30
2
1
31
32
+15V
OFFSET
ADJUST
10kW
TO
100kW
2.2MW
0.01µF
+
2.8MW
0.01
µF
+
GAIN
ADJUST
ANALOG INPUT
(0 TO +10V)
15V
COMMON
10kW
TO
100kW
–15V
0.01
µF
0.01µF CAPS ARE CERAMIC TYPES
1µF
CAP
Figure 3. Bipolar Operation, –5 to +5V
CONNECTIONS AND CALIBRATION
INPUT CONNECTIONS
WITHOUT BUFFER
INPUT VOLTAGE RANGE
INPUT PIN
0 to +5V
0 to +10V
±2.5V
±5V
±10V
24
24
24
24
25
WITH BUFFER
CONNECT THESE PINS TOGETHER
22 & 25
—
22& 25
—
—
23 & 26
23 & 26
23 & 22
23 & 22
23 & 22
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
INPUT PIN
CONNECT THESE PINS TOGETHER
30
30
30
30
30
• Tel: (508) 339-3000
22 & 25
—
22 & 25
—
—
•
www.datel.com
23 & 26
23 & 26
23 & 22
23 & 22
23 & 22
•
29 & 24
29 & 24
29 & 24
29 & 24
29 & 25
e-mail: [email protected]
ADC-HXHZ.C01 Page 4 of 7
ADC-HX, ADC-HZ Series
12-Bit, 8 and 20μsec Analog-to-Digital Converters
CALIBRATION PROCEDURE
1. Connect the converter for bipolar or unipolar operation.
Use the input connection table for the desired input voltage range and
input impedance. Apply START CONVERT pulses of 100 nanoseconds
minimum duration to pin 21. The spacing of the pulses should be no
less than the maximum conversion time.
2. Zero and Offset Adjustments
Apply a precision voltage reference source between the selected analog
input and ground. Adjust the output of the reference source to the
value shown in the Calibration Table for the unipolar zero adjustment
(zero + 1/2LSB) or the bipolar offset adjustment (–FS + 1/2LSB). Adjust
the trimming potentiometer so that the output code flickers equally
between 1111 1111 1111 and 1111 1111 1110.
3. Full Scale Adjustment
Change the output of the precision voltage reference source to the
value shown in the Calibration Table for the unipolar or bipolar gain
adjustment (+FS – 1.5LSB). Adjust the gain trimming potentiometer
so that the output code flickers equally between 0000 0000 0001 and
0000 0000 0000.
CALIBRATION TABLE
UNIPOLAR RANGE
ADJUST.
INPUT VOLTAGE
0 to + 5V
ZERO
GAIN
+ 0.6 mV
+ 4.9982V
0 to + 10V
ZERO
GAIN
+ 1.2 mV
+ 9.9963V
± 2.5V
OFFSET
GAIN
-2.4994V
+ 2.4982V
± 5V
OFFSET
GAIN
– 4.9988V
+ 4.9963V
± 10V
OFFSET
GAIN
– 9.9976V
+ 9.9927V
BIPOLAR RANGE
TIMING DIAGRAM FOR
ADC-HX, ADC-HZ OUTPUT: 101010101010
1
START
CONVERT
100ns min.
0
60ns
1
E.O.C.
(STATUS)
PARALLEL DATA
NOW VALID
T1
40ns
50ns
100ns
CLOCK
OUT
1
2
4
3
T2
5
0
6
8
7
9
10
12
11
1
13
0
40ns
SERIAL
DATA OUT
BIT 1
(MSB)
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
BIT 7
BIT 8
BIT 9
BIT 10 BIT 11
1
BIT 12
(LSB)
0
40ns
1
BIT 1
(MSB)
0
1
BIT 2
0
1
BIT 3
0
1
BIT 12
(LSB)
0
TIMING DIAGRAM OPERATING PERIODS
ADC-HX
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
• Tel: (508) 339-3000
•
ADC-HZ
T1
20μs
8μs
T2
1.56μs
0.56μs
www.datel.com
•
e-mail: [email protected]
ADC-HXHZ.C01 Page 5 of 7
ADC-HX, ADC-HZ Series
12-Bit, 8 and 20μsec Analog-to-Digital Converters
MECHANICAL DIMENSIONS INCHES (mm)
1.72 MAX.
(43.69)
32
Dimension Tolerances (unless otherwise indicated):
2 place decimal (.XX) ±0.010 (±0.254)
3 place decimal (.XXX) ±0.005 (±0.127)
17
Lead Material: Kovar alloy
1.11 MAX.
(28.19)
1
0.235 MAX.
(5.969)
Lead Finish: 50 microinches (minimum) gold plating
over 100 microinches (nominal) nickel plating
16
0.100 TYP.
(2.540)
1.500
(38.100)
0.200 MAX.
(5.080)
0.010 ±0.002
(0.254)
0.190 MAX.
(4.826)
0.018 ±0.002
(0.457)
0.100
(2.540)
SEATING
PLANE
0.025
(0.635)
0.900 ±0.010
(22.860)
0.100
(2.540)
0.040
(1.016)
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
• Tel: (508) 339-3000
•
www.datel.com
•
e-mail: [email protected]
ADC-HXHZ.C01 Page 6 of 7
ADC-HX, ADC-HZ Series
12-Bit, 8 and 20μsec Analog-to-Digital Converters
ORDERING GUIDE
MODEL NUMBER
ADC-HX12BGC
ADC-HX12BGC-C
ADC-HX12BMC
ADC-HX12BMC-C
ADC-HX12BME
ADC-HX12BME-C
ADC-HX12BME-QL
ADC-HX12BME-QL-C
ADC-HX12BMM
ADC-HX12BMM-C
ADC-HX12BMM-QL
ADC-HX12BMM-QL-C
ADC-HX/883
ADC-HZ12BGC
ADC-HZ12BGC-C
ADC-HZ12BMC
ADC-HZ12BMC-C
ADC-HZ12BME
ADC-HZ12BME-C
ADC-HZ12BME-QL
ADC-HZ12BME-QL-C
ADC-HZ12BMM
ADC-HZ12BMM-C
ADC-HZ12BMM-QL
ADC-HZ12BMM-QL-C
ADC-HZ/883
5962-8850801XC
5962-8850802XC
5962-8850801XA
5962-8850802XA
DATEL is a registered trademark of DATEL, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
TEMPERATURE RANGE
0 to +70°C
0 to +70°C
0 to +70°C
0 to +70°C
-40 to +100°C
-40 to +100°C
-40 to +100°C
-40 to +100°C
-55 to +125°C
-55 to +125°C
-55 to +125°C
-55 to +125°C
-55 to +125°C
0 to +70°C
0 to +70°C
0 to +70°C
0 to +70°C
-40 to +100°C
-40 to +100°C
-40 to +100°C
-40 to +100°C
-55 to +125°C
-55 to +125°C
-55 to +125°C
-55 to +125°C
-55 to +125°C
-55 to +125°C
-55 to +125°C
-55 to +125°C
-55 to +125°C
SEAL
Epoxy
Epoxy
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
Epoxy
Epoxy
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
Hermetic
ROHS
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
No
No
No
No
DATEL, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information
contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of
licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice.
ITAR and ISO 9001/14001 REGISTERED
© 2015 DATEL, Inc.
www.datel.com • e-mail: [email protected]
ADC-HXHZ.C01 Page 7 of 7