ETC ADS

®
®
ADS-947
14-Bit, 10MHz
Sampling A/D Converters
PRELIMINARY PRODUCT DATA
FEATURES
•
•
•
•
•
•
•
•
•
•
14-bit resolution
10MHz minimum sampling rate
No missing codes over full military temperature range
Ideal for both time and frequency-domain applications
Excellent THD (–81dB) and SNR (76dB)
Edge-triggered
Small, 24-pin, ceramic DDIP or SMT
Requires only +5V and –5.2V supplies
Low-power, 2 Watts
Low cost
INPUT/OUTPUT CONNECTIONS
GENERAL DESCRIPTION
The low-cost ADS-947 is a 14-bit, 10MHz sampling A/D
converter. This device accurately samples full-scale input
signals up to Nyquist frequencies with no missing codes.
Excellent differential nonlinearity error (DNL), signal-to-noise
ratio (SNR), and total harmonic distortion (THD) make the
ADS-947 the ideal choice for both time-domain (CCD/FPA
imaging, scanners, process control) and frequency-domain
(radar, telecommunications, spectrum analysis) applications.
The functionally complete ADS-947 contains a fast-settling
sample/hold amplifier, a subranging (two-pass) A/D converter,
an internal reference, timing/control logic, and error-correction
circuitry. Digital input and output levels are TTL. The ADS-947
only requires the rising edge of a start convert pulse to
operate.
Requiring only +5V and –5.2V supplies, the ADS-947 typically
dissipates just 2 Watts. The device is offered with a bipolar
input range of ±2V. Models are available for use in either
commercial (0 to +70°C) or military (–55 to +125°C) operating
PIN
FUNCTION
PIN
FUNCTION
1
2
3
4
5
6
7
8
9
10
11
12
BIT 1 (MSB)
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
BIT 7
BIT 8
BIT 9
BIT 10
BIT 11
BIT 12
24
23
22
21
20
19
18
17
16
15
14
13
ANALOG GROUND
OFFSET ADJUST
+5V ANALOG SUPPLY
ANALOG INPUT
–5.2V SUPPLY
ANALOG GROUND
START CONVERT
DATA VALID
BIT 14 (LSB)
BIT 13
DIGITAL GROUND
+5V DIGITAL SUPPLY
temperature ranges. A proprietary, auto-calibrating, errorcorrecting circuit allows the device to achieve specified
performance over the full military temperature range.
OFFSET ADJUST 23
BUFFER
16 BIT 14 (LSB)
FLASH
ADC
1
+
POWER AND GROUNDING
REF
22
+5V DIGITAL SUPPLY
13
–5.2V SUPPLY
20
ANALOG GROUND
19, 24
DIGITAL GROUND
14
DAC
S
AMP
START CONVERT 18
DATA VALID 17
FLASH
ADC
2
REGISTER
+5V ANALOG SUPPLY
15 BIT 13
12 BIT 12
11 BIT 11
OUTPUT REGISTER
S/H
DIGITAL CORRECTION LOGIC
–
REGISTER
ANALOG INPUT 21
10 BIT 10
9
BIT 9
8
BIT 8
7
BIT 7
6
BIT 6
5
BIT 5
4
BIT 4
3
BIT 3
2
BIT 2
1
BIT 1 (MSB)
TIMING AND
CONTROL LOGIC
Figure 1. ADS-947 Functional Block Diagram
DATEL, Inc., Mansfield, MA 02048 (USA) • Tel: (508) 339-3000, (800) 233-2765 Fax: (508) 339-6356 • Email: sales@datel.com • Internet: www.datel.com
®
®
ADS-947
ABSOLUTE MAXIMUM RATINGS
PARAMETERS
+5V Supply (Pins 13, 22)
–5.2V Supply (Pin 20)
Digital Input (Pin 18)
Analog Input (Pin 21)
Lead Temperature (10 seconds)
PHYSICAL/ENVIRONMENTAL
LIMITS
UNITS
0 to +6
0 to –5.5V
–0.3 to +VDD +0.3
±5
+300
Volts
Volts
Volts
Volts
°C
PARAMETERS
MIN.
TYP.
MAX.
UNITS
0
–55
—
—
+70
+125
°C
°C
Operating Temp. Range, Case
ADS-947MC, GC
ADS-947MM, GM, 883
Thermal Impedance
θjc
θca
Storage Temperature Range
Package Type
Weight
—
6
—
°C/Watt
—
23
—
°C/Watt
–65
—
+150
°C
24-pin, metal-sealed, ceramic DDIP or SMT
0.46 ounces (13 grams)
FUNCTIONAL SPECIFICATIONS
(TA = +25°C, +VDD = +5V, –VDD = –5.2V, 10MHz sampling rate, and a minimum 3 minute warmup ➀ unless otherwise specified.)
+25°C
ANALOG INPUT
Input Voltage Range ➁
Input Resistance
Input Capacitance
0 to +70°C
–55 to +125°C
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
UNITS
—
—
—
±2
250
6
—
—
15
—
—
—
±2
250
6
—
—
15
—
—
—
±2
250
6
—
—
15
Volts
Ω
pF
+2.0
—
—
—
10
—
—
—
—
20
—
+0.8
+20
–20
—
+2.0
—
—
—
10
—
—
—
—
20
—
+0.8
+20
–20
—
+2.0
—
—
—
10
—
—
—
—
20
—
+0.8
+20
–20
—
Volts
Volts
µA
µA
ns
—
—
–0.95
—
—
—
14
14
±0.75
±0.5
±0.15
±0.1
±0.2
—
—
—
+1.25
±0.4
±0.3
±0.4
—
—
—
–0.95
—
—
—
14
14
±0.75
±0.5
±0.15
±0.1
±0.2
—
—
—
+1.25
±0.4
±0.3
±0.4
—
—
—
–0.95
—
—
—
14
14
±1
±0.5
±0.4
±0.3
±0.4
—
—
—
+1.5
±0.8
±0.6
±1.5
—
Bits
LSB
LSB
%FSR
%FSR
%
Bits
—
—
—
–83
–78
–76
–76
–72
–71
—
—
—
–83
–78
–76
–75
–72
–71
—
—
—
–79
–73
–71
–71
–68
–65
dB
dB
dB
—
—
—
–81
–76
–74
–74
–71
–69
—
—
—
–81
–76
–74
–74
–71
–69
—
—
—
–77
–72
–69
–70
–66
–63
dB
dB
dB
72
72
71
76
76
75
—
—
—
72
72
71
76
76
75
—
—
—
70
70
70
75
75
75
—
—
—
dB
dB
dB
70
70
68
—
74
74
73
150
—
—
—
—
70
70
68
—
74
74
73
150
—
—
—
—
68
66
65
—
73
71
70
150
—
—
—
—
dB
dB
dB
µVrms
—
–82
—
—
–82
—
—
–82
—
dB
—
—
—
—
—
—
30
10
85
±400
+5
2
—
—
—
—
—
—
—
—
—
—
—
—
30
10
85
±400
+5
2
—
—
—
—
—
—
—
—
—
—
—
—
30
10
85
±400
+5
2
—
—
—
—
—
—
MHz
MHz
dB
V/µs
ns
ps rms
DIGITAL INPUT
Logic Levels
Logic "1"
Logic "0"
Logic Loading "1"
Logic Loading "0"
Start Convert Positive Pulse Width ➂
STATIC PERFORMANCE
Resolution
Integral Nonlinearity (fin = 10kHz)
Differential Nonlinearity (fin = 10kHz)
Full Scale Absolute Accuracy
Bipolar Zero Error (Tech Note 2)
Gain Error (Tech Note 2)
No Missing Codes (fin = 10kHz)
DYNAMIC PERFORMANCE
Peak Harmonics (–0.5dB)
dc to 1MHz
1MHz to 2.5MHz
2.5MHz to 5MHz
Total Harmonic Distortion (–0.5dB)
dc to 1MHz
1MHz to 2.5MHz
2.5MHz to 5MHz
Signal-to-Noise Ratio
(w/o distortion, –0.5dB)
dc to 1MHz
1MHz to 2.5MHz
2.5MHz to 5MHz
Signal-to-Noise Ratio ➃
(& distortion, –0.5dB)
dc to 1MHz
1MHz to 2.5MHz
2.5MHz to 5MHz
Noise
Two-tone Intermodulation
Distortion (fin = 2.45MHz,
1.975MHz, fs = 10MHz, –0.5dB)
Input Bandwidth (–3dB)
Small Signal (–20dB input)
Large Signal (–0.5dB input)
Feedthrough Rejection (fin = 5MHz)
Slew Rate
Aperture Delay Time
Aperture Uncertainty
2
®
®
ADS-947
+25°C
DYNAMIC PERFORMANCE (Cont.)
0 to +70°C
–55 to +125°C
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
UNITS
—
—
10
40
—
—
45
100
—
—
—
10
40
—
—
45
100
—
—
—
10
40
—
—
45
100
—
ns
ns
MHz
+2.4
—
—
—
—
—
—
—
—
+0.4
–4
+4
+2.4
—
—
—
+2.4
—
—
—
—
—
—
—
—
+0.4
–4
+4
Volts
Volts
mA
mA
+4.75
–4.75
+5.0
–5.2
+5.25
–5.45
+4.75
–4.75
+5.0
–5.2
+5.25
–5.45
+4.9
–4.9
+5.0
–5.2
+5.25
–5.45
Volts
Volts
—
—
—
—
+250
–200
2.0
—
+260
–210
2.25
±0.1
—
—
—
—
+250
–200
2.0
—
+260
–210
2.25
±0.1
—
—
—
—
+250
–200
2.0
—
+260
–210
2.25
±0.1
mA
mA
Watts
%FSR/%V
S/H Acquisition Time
( to ±0.003%FSR, 4V step)
Overvoltage Recovery Time ➄
A/D Conversion Rate
DIGITAL OUTPUTS
Logic Levels
Logic "1"
Logic "0"
Logic Loading "1"
Logic Loading "0"
Output Coding
—
—
—
+0.4
—
–4
—
+4
Offset Binary
POWER REQUIREMENTS
Power Supply Ranges ➅
+5V Supply
–5.2V Supply
Power Supply Currents
+5V Supply
–5.2V Supply
Power Dissipation
Power Supply Rejection
Footnotes:
➃ Effective bits is equal to:
➀ All power supplies should be on before applying a start convert pulse. All
supplies and the clock (start convert pulses) must be present during warmup
periods. The device must be continuously converting during this time.
(SNR + Distortion) – 1.76 +
20 log
Full Scale Amplitude
Actual Input Amplitude
6.02
➁ Contact DATEL for other input voltage ranges.
➂ A 10MHz clock with a 20ns positive pulse width is used for all production
testing. See Timing Diagram, figure 4, for more details.
➄ This is the time required before the A/D output data is valid once the analog
input is back within the specified range. This time is only guaranteed if the
input does not exceed ±2.2V (S/H saturation voltage).
➅ The minimum supply voltages of +4.9V and –5.1V for ±VDD are required for
–55°C operation only. The minimum limits are +4.75V and –4.95V when
operating at +125°C
TECHNICAL NOTES
3. Applying a start convert pulse while a conversion is in
progress (EOC = logic 1) will initiate a new and inaccurate
conversion cycle. Data for the interrupted and subsequent
conversions will be invalid.
1. Obtaining fully specified performance from the ADS-947
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 24) directly to a
large analog ground plane beneath the package.
4. A passive bandpass filter is used at the input of the A/D for
all production testing.
Bypass all power supplies 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.
2kΩ
GAIN
ADJUST
+5V
2. The ADS-947 achieves its specified accuracies without the
need for external calibration. If required, the device’s small
initial offset and gain errors can be reduced to zero using
the adjustment circuitry shown in Figures 2 and 3.
1.98kΩ
SIGNAL
INPUT
To Pin 21
of ADS-947
50Ω
When using this circuitry, or any similar offset and gain
calibration hardware, make adjustments following warmup.
To avoid interaction, always adjust offset before gain.
–5V
Figure 2. Optional ADS-947 Gain Adjust Calibration Circuit
3
®
®
ADS-947
CALIBRATION PROCEDURE
Any offset and/or gain calibration procedures should not be
implemented until devices are fully warmed up. To avoid
interaction, offset must be adjusted before gain. The ranges of
adjustment for the circuits in Figures 2 and 3 are guaranteed to
compensate for the ADS-947’s initial accuracy errors and may
not be able to compensate for additional system errors.
Gain Adjust Procedure
1. Apply +1.99963V to the ANALOG INPUT (pin 21).
2. Adjust the gain potentiometer until all output bits are 1’s and
the LSB flickers between 1 and 0.
3. To confirm proper operation of the device, vary the input
signal to obtain the output coding listed in Table 2.
A/D converters are calibrated by positioning their digital outputs
exactly on the transition point between two adjacent digital
output codes. This can be accomplished by connecting LED’s
to the digital outputs and adjusting until certain LED’s “flicker”
equally between on and off. Other approaches employ digital
comparators or microcontrollers to detect when the outputs
change from one code to the next.
Table 1. Gain and Zero Adjust
INPUT VOLTAGE
RANGE
Offset adjusting for the ADS-947 is normally accomplished at
the point where the MSB is a 1 and all other output bits are 0’s
and the LSB just changes from a 0 to a 1. This digital output
transition ideally occurs when the applied analog input is
+½ LSB (+122µV).
±2V
Zero/Offset Adjust Procedure
1. Apply a train of pulses to the START CONVERT input (pin
18) so the converter is continuously converting.
2. Apply +122µV to the ANALOG INPUT (pin 21).
3. Adjust the offset potentiometer until the output bits are
10 0000 0000 0000 and the LSB flickers between 0 and 1.
INPUT VOLTAGE
(±2V RANGE)
OFFSET BINARY
MSB
LSB
+FS –1 LSB
+3/4 FS
+1/2 FS
0
–1/2 FS
–3/4 FS
–FS +1 LSB
–FS
+1.99976
+1.50000
+1.00000
0.00000
–1.00000
–1.50000
–1.99976
–2.00000
11 1111 1111 1111
11 1000 0000 0000
11 0000 0000 0000
10 0000 0000 0000
01 0000 0000 0000
00 1000 0000 0000
00 0000 0000 0001
00 0000 0000 0000
4.7µF 4.7µF
+ +
0.1µF
0.1µF
20
24
0.1µF
22, 13
14
21
1
2
3
4
5
23
6
7
8
9
10
ADS-947
20kW
–5V
START
CONVERT
+1.99963V
BIPOLAR
SCALE
4.7µF
+
+5V
ZERO/
OFFSET
ADJUST
+122µV
+5V ➀
–5.2V
ANALOG
INPUT
GAIN ADJUST
+FS –1½ LSB
Table 2. Output Coding for Bipolar Operation
Gain adjusting is accomplished when all bits are 1’s and the
LSB just changes from a 1 to a 0. This transition ideally occurs
when the analog input is at +full scale minus 1½ LSB's
(+1.99963V).
19
ZERO ADJUST
+½ LSB
18
BIT 1 (MSB)
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
BIT 7
BIT 8
BIT 9
BIT 10
11 BIT 11
12 BIT 12
15 BIT 13
16 BIT 14 (LSB)
17 DATA VALID
➀ A single +5V supply should be used for both the +5V analog and +5V digital.
If separate supplies are used, the difference between the two cannot exceed 100mV.
Figure 3. Typical ADS-947 Connection Diagram
4
®
®
ADS-947
THERMAL REQUIREMENTS
All DATEL sampling A/D converters are fully characterized
and specified over operating temperature (case) ranges of
0 to +70°C and –55 to +125°C. All room temperature
(TA = +25°C) production testing is performed without the use
of heat sinks or forced air cooling. Thermal impedance
figures for each device are listed in their respective
specification tables.
Electrically-insulating, thermally-conductive "pads" may be
installed underneath the package. Devices should be soldered
to boards rather than socketed, and of course, minimal air flow
over the surface can greatly help reduce the package
temperature.
In more severe ambient conditions, the package/junction
temperature of a given device can be reduced dramatically
(typically 35%) by using one of DATEL's HS Series heat sinks.
See Ordering Information for the assigned part number. See
page 1-183 of the DATEL Data Acquisition Components Catalog
for more information on the HS Series. Request DATEL
Application Note AN8, "Heat Sinks for DIP Data Converters",
or contact DATEL directly, for additional information.
These devices do not normally require heat sinks, however,
standard precautionary design and layout procedures should
be used to ensure devices do not overheat. The ground and
power planes beneath the package, as well as all pcb signal
runs to and from the device, should be as heavy as possible
to help conduct heat away from the package.
N
START
CONVERT
N+1
20ns
typ.
10ns typ.
Acquisition Time
INTERNAL S/H
Hold
65ns typ.
(61ns min., 68ns max.)
INTERNAL EOC
Conversion Time
70ns typ.
35ns
typ.
25ns typ. (22ns min., 28ns max.)
15ns
DATA
VALID
DATA N-1 VALID
DATA N VALID
40ns typ.
(±5ns)
40ns typ.
(±5ns)
40ns max.
OUTPUT
DATA
50ns typ.
DATA N-1 VALID
50ns typ.
(±5ns)
DATA N VALID
INVALID DATA
Notes:
1. Scale is approximately 5ns per division. Sampling rate = 10MHz.
2. The start convert pulse must be between 20 and 50ns wide or between 80 and 100ns wide (when sampling at 10MHz)
to ensure proper operation. For sampling rates less than 10MHz, the start pulse can be wider than 85nsec, however a minimum
pulse width low of 15nsec should be maintained. A 10MHz clock with a 20nsec positive pulse width is used for all production testing.
Figure 4. ADS-947 Timing Diagram
5
®
ADS-947
Figure 5. FFT Analysis of ADS-947
(fs = 8MHz, fin = 3.85MHz, Vin = –0.5dB, 16,384 point FFT)
Figure 6. ADS-947 Histogram and Differential Nonlinearity
6
®
ANA.
IN
SG10
SG3
SG2
SG1
P4
P2
26
24
22
20
18
16
14
12
10
8
6
4
2
25
23
21
19
17
15
13
11
9
7
5
3
1
ANA. IN
20µH
L7
20µH
L6
20µH
L5
20µH
L4
20µH
L3
20µH
L2
20µH
L1
+
+
C8
0.01µF
C9
0.01µF
C1
2.2µF
C2
2.2µF
+
0.01µF
C11
0.01µF
C12
0.01µF
C13
0.01µF
2.2µF
C4
2.2µF
C5
2.2µF
C6
2.2µF
2.2µF
C7
0.01µF
C14
C10
R2
SG5
–5V
+5VA
+15V
–15V
–5VA
+5V
5
+15V
10
12
11
13
0.1µF
(Optional)
U6
5
4
13
12
C15
11
U5
6
7
+5V
24
23
22
21
20
19
18
17
16
15
14
13
C23
HCT7474
7
ADS-947
AGND
BIT1
OFFSET
BIT2
+5VA
BIT3
AIN
BIT4
–5.2V
BIT5
AGND
BIT6
START
BIT7
DATA VALID BIT8
BIT14
BIT9
BIT13
BIT10
DGND
BIT11
+5VD
BIT12
U1
1
2
3
4
5
6
7
8
9
10
11
12
3.2k
2.2µF
14
4
JPR1
PR
5
2
D U6 Q
6
3
1 2 3
CK
Q
1
R3
CLR
0.1µF
C24
+
START CONVERT
15pF
C25
+5VA
8
SG9
14
–5.2V
2.2µF
C27
74HCT86
0.1µF
7 GND
U5
14
+5VF
ANA. IN
SG4
0.1µF
C26
X1
10MHz
CRYSTAL
+5VF
+5VF
10
9
P3
U5
U5
+
0.1µF
2.2µF
C16
C22
3
2
3
4
5
6
7
8
9
11
2
3
4
5
6
7
8
9
11
74HCT573
C21
74HCT573
19
18
17
16
15
14
13
12
1
+5VF
19
18
17
16
15
14
13
12
1
2.2µF
Q1
1D
2D
Q2
Q3
3D
4D
Q4
U2 Q5
5D
6D
Q6
Q7
7D
Q8
8D
OE
CE
10
20
10
C17
0.1µF
Q1
1D
2D
Q2
Q3
3D
4D
Q4
5D U3 Q5
6D
Q6
Q7
7D
Q8
8D
OE
CE
20
+
+5VF
2. CLOSE SG1-SG3, SG9, SG10.
ALL RESISTORS ARE IN OHMS.
C1 - C7 ARE 20V.
1. UNLESS OTHERWISE SPECIFIED ALL CAPACITORS ARE 50V.
NOTES:
74HCT86
8
74HCT86
2
1
START
CONVERT
Figure 7. ADS-947 Evaluation Board Schematic (ADS-B947)
HCT7474
9
Q
8
SPARE GATES
0.1µF
C19
(Optional)
-15V
C20
PR
D
CK
CLR
2
R1
C18
0.1µF
(Optional)
SG6
20k
–15V
SG8
CLC402
HI2541
10
+5VA
OFFSET
ADJUST
–5VA
SG7
6
U4
11
+15V
+5VF
+
(Optional)
4
–
+5VF
C3
+
+
+
7
+
OPTION
+
2 3
JPR2
1
CE
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
TRIG
2
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
P1
1
33
31
29
27
25
23
21
19
17
15
13
11
9
7
5
3
®
®
ADS-947
®
®
ADS-947
MECHANICAL DIMENSIONS INCHES (mm)
1.31 MAX.
(33.27)
24-Pin DDIP
Versions
24
Dimension Tolerances (unless otherwise indicated):
2 place decimal (.XX) ±0.010 (±0.254)
3 place decimal (.XXX) ±0.005 (±0.127)
13
0.80 MAX.
(20.32)
ADS-947MC
ADS-947MM
1
Lead Material: Kovar alloy
Lead Finish: 50 microinches (minimum) gold plating
over 100 microinches (nominal) nickel plating
12
0.100 TYP.
(2.540)
1.100
(27.940)
0.235 MAX.
(5.969)
PIN 1 INDEX
0.200 MAX.
(5.080)
0.010
(0.254)
0.190 MAX.
(4.826)
0.100
(2.540)
0.040
(1.016)
0.018 ±0.002
(0.457)
+0.002
–0.001
0.600 ±0.010
(15.240)
SEATING
PLANE
0.025
(0.635)
0.100
(2.540)
1.31 MAX.
(33.02)
24-Pin
Surface Mount
Versions
Dimension Tolerances (unless otherwise indicated):
2 place decimal (.XX) ±0.010 (±0.254)
3 place decimal (.XXX) ±0.005 (±0.127)
13
24
0.80 MAX.
(20.32)
ADS-947GC
ADS-947GM
1
0.190 MAX.
(4.826)
Lead Material: Kovar alloy
Lead Finish: 50 microinches (minimum) gold plating
over 100 microinches (nominal) nickel plating
12
0.020 TYP.
(0.508)
0.060 TYP.
(1.524)
0.130 TYP.
(3.302)
PIN 1
INDEX
0.100
(2.540)
0.100 TYP.
(2.540)
0.020
(0.508)
0.015
(0.381)
MAX. radius
for any pin
0.010 TYP.
(0.254)
0.040
(1.016)
ORDERING INFORMATION
MODEL
OPERATING
TEMP. RANGE
24-PIN
PACKAGE
ADS-947MC
ADS-947MM
ADS-947/883
ADS-947GC
ADS-947GM
0 to +70°C
–55 to +125°C
–55 to +125°C
0 to +70°C
–55 to +125°C
DDIP
DDIP
DDIP
SMT
SMT
ACCESSORIES
ADS-B947
HS-24
Evaluation Board (without ADS-947)
Heat Sink for all ADS-947 DDIP models
Receptacles for PC board mounting can be ordered through AMP, Inc., Part # 3-331272-8 (Component Lead
Socket), 24 required. For MIL-STD-883 product specifcation, contact DATEL.
®
®
INNOVATION and EXCELLENCE
ISO 9001
R E G I S T E R E D
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
Internet: www.datel.com
Email: sales@datel.com
Data Sheet Fax Back: (508) 261-2857
DS-0346
01/97
DATEL (UK) LTD. Tadley, England Tel: (01256)-880444
DATEL S.A.R.L. Montigny Le Bretonneux, France Tel: 01-34-60-01-01
DATEL GmbH München, Germany Tel: 89-544334-0
DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-354-2025
DATEL 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. The DATEL logo is a registered DATEL, Inc. trademark.