ADS-947

ADS-947
14-Bit, 10MHz Sampling A/D Converters
PRODUCT OVERVIEW
The 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 frequencydomain (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,
FEATURES
timing/control logic, and error-correction circuitry.
Digital input and output levels are TTL. The ADS947 only requires the rising edge of a start convert
pulse to operate.
Requiring only +5V and –5V supplies, the ADS947 typically dissipates just 2.2 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 industrial (–40 to +100°C), operating
temperature ranges. A proprietary, auto-calibrating,
error-correcting circuit allows the device to achieve
specified performance over the extended temperature range.
„ 14-bit resolution
„ 10MHz minimum sampling rate
INPUT/OUTPUT CONNECTIONS
FUNCTION
PIN
FUNCTION
BIT 1 (MSB)
24
ANALOG GROUND
BIT 2
23
OFFSET ADJUST
BIT 3
22
+5V ANALOG SUPPLY
BIT 4
21
ANALOG INPUT
BIT 5
20
–5V SUPPLY
BIT 6
19
ANALOG GROUND
BIT 7
18
START CONVERT
BIT 8
17
DATA VALID
BIT 9
16
BIT 14 (LSB)
BIT 10
15
BIT 13
BIT 11
14
DIGITAL GROUND
BIT 12
13
+5V DIGITAL SUPPLY
PIN
1
2
3
4
5
6
7
8
9
10
11
12
„ No missing codes
„ Ideal for both time and frequency-domain
applications
„ Edge-triggered
„ Small, 24-pin, ceramic DDIP or SMT
„ Requires only +5V supplies
„ Low-power, 2.2 Watts
BLOCK DIAGRAM
OFFSET ADJUST 23
BUFFER
16 BIT 14 (LSB)
FLASH
ADC
1
+
15 BIT 13
12 BIT 12
POWER AND GROUNDING
REF
22
+5V DIGITAL SUPPLY
13
–5V SUPPLY
20
ANALOG GROUND
19, 24
DIGITAL GROUND
14
DAC
∑
AMP
START CONVERT 18
DATA VALID 17
FLASH
ADC
2
REGISTER
+5V ANALOG SUPPLY
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. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
• Tel: (508) 339-3000
•
www.datel.com
•
e-mail: [email protected]
MDA_ADS-947.D01 Page 1 of 9
ADS-947
14-Bit, 10MHz Sampling A/D Converters
ABSOLUTE MAXIMUM RATINGS
PARAMETERS
LIMITS
+5V Supply (Pins 13, 22)
0 to +6
–5V Supply (Pin 20)
0 to –6V
Digital Input (Pin 18)
–0.3 to +VDD +0.3
Analog Input (Pin 21)
±5
Lead Temperature (10 seconds)
+300
PHYSICAL/ENVIRONMENTAL
PARAMETERS
MIN.
TYP.
MAX.
UNITS
Operating Temp. Range, Case
ADS-947MC, GC, MC-C, GC-C
0
—
+70
°C
ADS-947ME, GE, ME-C, GE-C
–40
—
+100
°C
ADS-947ME-QL, ME-QL-C
–40
—
+100
°C
Thermal Impedance
θjc
—
6
—
°C/Watt
θca
—
23
—
°C/Watt
Storage Temperature Range
–65
—
+150
°C
Package Type
24-pin, metal-sealed, ceramic DDIP or SMT
Weight
0.46 ounces (13 grams)
UNITS
Volts
Volts
Volts
Volts
°C
FUNCTIONAL SPECIFICATIONS
(TA = +25°C, +VDD = +5V, –VDD = –5V, 10MHz sampling rate,and a minimum 3 minute warmup ➀ unless otherwise specified.)
ANALOG INPUT
Input Voltage Range d
Input Resistance
Input Capacitance
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 f (& 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 = 2.45MHz)
Slew Rate
Aperture Delay Time
Aperture Uncertainty
S/H Acquisition Time (to ±0.003%FSR, 4V step)
Overvoltage Recovery Time ➄
A/D Conversion Rate
MIN.
—
—
—
+25°C
TYP.
±2
300
6
MAX.
—
—
15
MIN.
—
—
—
0 TO +70°C
TYP.
±2
300
6
MAX.
—
—
15
MIN.
—
—
—
–40 TO +100°C
TYP.
±2
300
6
MAX.
—
—
15
UNITS
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
±0.2
±0.2
—
—
—
+1.25
±0.4
±0.4
±0.75
—
—
—
–0.95
—
—
—
14
14
±0.75
±0.5
±0.15
±0.2
±0.2
—
—
—
+1.25
±0.4
±0.4
±0.75
—
—
—
–0.95
—
—
—
14
14
±1
±0.75
±0.4
±0.4
±0.4
—
—
—
+1.5
±0.8
±0.65
±1.25
—
Bits
LSB
LSB
%FSR
%FSR
%
Bits
—
—
—
–83
–78
–76
–72
–69
–69
—
—
—
–83
–78
–76
–75
–72
–71
—
—
—
–75
–73
–69
–71
–68
–65
dB
dB
dB
—
—
—
–81
–76
–75
–74
–71
–68
—
—
—
–81
–76
–75
–74
–71
–68
—
—
—
–75
–72
–69
–70
–66
–64
dB
dB
dB
73
73
73
77
77
77
—
—
—
73
73
73
77
77
77
—
—
—
71
71
71
76
76
76
—
—
—
dB
dB
70
68
68
—
74
73
73
150
—
—
—
—
70
68
68
—
74
73
73
150
—
—
—
—
68
66
65
—
73
71
70
150
—
—
—
—
dB
dB
μVrms
—
–78
—
—
–78
—
—
–78
—
dB
—
—
—
—
—
—
—
—
10
24
22
85
±276
+5
7
30
100
—
—
—
—
—
—
—
—
125
—
—
—
—
—
—
—
—
—
10
24
22
85
±276
+5
7
30
100
—
—
—
—
—
—
—
—
125
—
—
—
—
—
—
—
—
—
10
24
22
85
±276
+5
7
30
100
—
—
—
—
—
—
—
—
125
—
MHz
MHz
dB
V/μs
ns
ps rms
ns
ns
MHz
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
• Tel: (508) 339-3000
•
www.datel.com
•
e-mail: [email protected]
MDA_ADS-947.D01 Page 2 of 9
ADS-947
14-Bit, 10MHz Sampling A/D Converters
DIGITAL OUTPUTS
Logic Levels
Logic "1"
Logic "0"
Logic Loading "1"
Logic Loading "0"
Output Coding
POWER REQUIREMENTS
Power Supply Ranges
+5V Supply
–5V Supply
Power Supply Currents
+5V Supply
–5V Supply
Power Dissipation
Power Supply Rejection
MIN.
+25°C
TYP.
MAX.
MIN.
+2.4
—
—
—
—
—
—
—
—
+0.4
–4
+4
+2.4
—
—
—
+4.75
–4.75
+5.0
–5.2
+5.25
–5.45
+4.75
–4.75
+5.0
–5.0
—
—
—
—
+250
–150
2.2
—
+270
–170
2.2
±0.05
—
—
—
—
+250
–150
2.2
—
Footnotes:
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.
➁ Contact DATEL for other input voltage ranges; the range for ADS-947MC-31122 is
±0.5 Volts.
➂ A 10MHz clock with a 20ns positive pulse width is used for all production testing.
See Timing Diagram, figure 4, for more details.
TECHNICAL NOTES
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.
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.
0 TO +70°C
TYP.
MAX.
MIN.
–40 TO +100°C
TYP.
MAX.
UNITS
—
—
—
+0.4
—
–4
—
+4
Offset Binary
+2.4
—
—
—
—
—
—
—
—
+0.4
–4
+4
Volts
Volts
mA
mA
+5.25
–5.45
+4.9
–4.9
+5.0
–5.0
+5.25
–5.45
Volts
Volts
+270
–170
2.2
±0.05
—
—
—
—
+250
–150
2.2
—
+270
–170
2.2
±0.05
mA
mA
Watts
%FSR/%V
➃ Effective bits is equal to:
(SNR + Distortion) – 1.76 +
20 log
Full Scale Amplitude
Actual Input Amplitude
6.02
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).
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. When using this circuitry, or any similar offset and gain calibration hardware, make adjustments following warmup. To avoid interaction,
always adjust offset before gain.
3. A passive bandpass filter is used at the input of the A/D for all production
testing.
2k:
GAIN
ADJUST
+5V
1.98k:
SIGNAL
INPUT
To Pin 21
of ADS-947
50:
–5V
Figure 2. Optional ADS-947 Gain Adjust Calibration Circuit
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
• Tel: (508) 339-3000
•
www.datel.com
•
e-mail: [email protected]
MDA_ADS-947.D01 Page 3 of 9
ADS-947
14-Bit, 10MHz Sampling A/D Converters
CALIBRATION PROCEDURE
Gain Adjust Procedure (see technical note 2)
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.
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.
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).
INPUT VOLTAGE
RANGE
ZERO ADJUST
+½ LSB
GAIN ADJUST
+FS –1½ LSB
±2V
+122μV
+1.99963V
Table 1. Gain and Zero Adjust
BIPOLAR
SCALE
+FS –1 LSB
+3/4 FS
+1/2 FS
0
–1/2 FS
–3/4 FS
–FS +1 LSB
–FS
Gain adjusting (see technical note 2) 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).
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).
+5V ~
–5.2V
ANALOG
INPUT
4.7μF
+
4.7μF 4.7μF
+ +
0.1μF
0.1μF
20
24
0.1μF
22, 13
14
1
2
3
4
5
6
7
21
+5V
ZERO/
OFFSET
ADJUST
23
8
9
10
11
12
15
16
17
ADS-947
20k
–5V
START
CONVERT
OFFSET BINARY
MSB
LSB
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
Table 2. Output Coding for Bipolar Operation
3. Adjust the offset potentiometer until the output bits are 10 0000 0000 0000
and the LSB flickers between 0 and 1.
19
INPUT RANGE
(±2V RANGE)
+1.99976
+1.50000
+1.00000
0.00000
–1.00000
–1.50000
–1.99976
–2.00000
18
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
BIT 13
BIT 14 (LSB)
DATA VALID
~ 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
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
• Tel: (508) 339-3000
•
www.datel.com
•
e-mail: [email protected]
MDA_ADS-947.D01 Page 4 of 9
ADS-947
14-Bit, 10MHz Sampling A/D Converters
THERMAL REQUIREMENTS
the device, should be as heavy as possible to help conduct heat away from the
package.
All DATEL sampling A/D converters are fully characterized and specified over
operating temperature (case) ranges of 0 to +70°C and –40 to +100°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. 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
N
START
CONVERT
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.
N+1
20ns
typ.
12ns typ.
INTERNAL S/H
Acquisition Time
Hold
69ns typ.
(66ns min., 72ns max.)
50ns
DATA
VALID
31ns
typ.
DATA N-1 VALID
DATA N VALID
40ns typ.
(±5ns)
40ns typ.
(±5ns)
10ns
OUTPUT
DATA
DATA N-1 VALID
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.
3. For no latency delay and an input range of ±0.5 Volts, order ADS-947MC-31122.
Figure 4. ADS-947 Timing Diagram
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
• Tel: (508) 339-3000
•
www.datel.com
•
e-mail: [email protected]
MDA_ADS-947.D01 Page 5 of 9
ADS-947
14-Bit, 10MHz Sampling A/D Converters
(fs = 8MHz, fin = 3.85MHz, Vin = –0.5dB, 16,384 point FFT)
Figure 5. FFT Analysis of ADS-947
Figure 6. ADS-947 Histogram and Differential Nonlinearity
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
• Tel: (508) 339-3000
•
www.datel.com
•
e-mail: [email protected]
MDA_ADS-947.D01 Page 6 of 9
• Tel: (508) 339-3000
•
ANA.
IN
www.datel.com
•
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
+
C11
C4
2.2μF
C5
2.2μF
0.01μF
C14
0.01μF
2.2μF
C7
C13
R2
SG5
–5V
+5VA
+15V
–15V
–5VA
+5V
5
+15V
10
12
11
13
0.1μF
(Optional)
U6
HCT7474
9
Q
8
5
4
13
12
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
+5VF
+
(Optional)
4
–
+5VF
C6
0.01μF
C12
0.01μF
0.01μF
2.2μF
2.2μF
C10
C3
+
+
DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
+
+15V
11
6
HCT7474
7
+5V
24
23
22
21
20
19
18
17
16
15
14
13
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
PR
5
2
D U6 Q
6
3
CK
Q
1
R3
CLR
START CONVERT
15pF
C25
+5VA
8
C23
0.1μF
C24
+
+5VF
2 3
JPR1
10
9
1
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
U3
Q5
5D
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)
U5
7
–5.2V
2.2μF
C27
74HCT86
0.1μF
C15
7 GND
U5
14
+5VF
ANA. IN
SG4
0.1μF
C26
X1
SG9
14
+5VF
10MHz
CRYSTAL
+
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
14-Bit, 10MHz Sampling A/D Converters
e-mail: [email protected]
MDA_ADS-947.D01 Page 7 of 9
ADS-947
14-Bit, 10MHz Sampling A/D Converters
MECHANICAL DIMENSIONS INCHES (mm)
1.31 MAX.
(33.27)
24-Pin TDIP
Versions
24
ADS-947MC
ADS-947ME
ADS-947ME-QL
ADS-947MM
ADS-947/883
ADS-947MC-C
ADS-947ME-C
ADS-947ME-QL-C
ADS-947MM-C
ADS-947MM-C/883
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)
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
0.100
(2.540)
0.600 ±0.010
(15.240)
SEATING
PLANE
0.025
(0.635)
1.31 MAX.
(33.02)
24-Pin
Surface Mount
Versions
ADS-947GC
ADS-947GE
ADS-947GM
ADS-947G/883
ADS-947GC-C
ADS-947GE-C
ADS-947GM-C
ADS-947G-C/883
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)
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)
0.100
(2.540)
0.100 TYP.
(2.540)
0.015
(0.381)
MAX. radius
for any pin
0.130 TYP.
(3.302)
PIN 1
INDEX
0.020
(0.508)
0.010 TYP.
(0.254)
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]
MDA_ADS-947.D01 Page 8 of 9
ADS-947
14-Bit, 10MHz Sampling A/D Converters
ORDERING INFORMATION
MODEL NUMBER
ADS-947MC
ADS-947MC-C
OPERATING
TEMP. RANGE
0 to +70°C
0 to +70°C
PACKAGE
ROHS
DDIP
No
DDIP
Yes
ADS-947ME
–40 to +100°C
DDIP
No
ADS-947ME-C
–40 to +100°C
DDIP
Yes
ADS-947ME-QL
–40 to +100°C
DDIP
No
ADS-947ME-QL-C
–40 to +100°C
DDIP
Yes
ADS-947GC
0 to +70°C
SMT
No
ADS-947GC-C
0 to +70°C
SMT
Yes
ADS-947GE
–40 to +100°C
SMT
No
ADS-947GE-C
–40 to +100°C
SMT
Yes
ADS-947GE-QL
–40 to +100°C
SMT
No
ADS-947GE-QL-C
–40 to +100°C
SMT
Yes
ADS-947MM
–55 to +125°C
DDIP
No
ADS-947MM-C
–55 to +125°C
DDIP
Yes
ADS-947/883
–55 to +125°C
DDIP
No
ADS-947-C/883
–55 to +125°C
DDIP
Yes
ADS-947GM
–55 to +125°C
SMT
No
ADS-947GM-C
–55 to +125°C
SMT
Yes
ADS-947G/883
–55 to +125°C
SMT
No
ADS-947G-C/883
–55 to +125°C
SMT
Yes
DATEL is a registered trademark of DATEL, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
ACCESSORIES
ADS-B947
Evaluation Board (without ADS-947)
HS-24
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.
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]
MDA_ADS-947.D01 Page 9 of 9