®
®
SHM-50
Miniature, High-Speed, Complete ±0.05% Sample Hold Amplifiers
FEATURES
Small 8-pin DIP or SMT package
typical acquisition time to ±0.01%, 40ns typical
30ns
acquisition time to 0.005%
typical sample-to-hold settling time to ±0.01%
15ns
100MHz small signal bandwidth
–78dB feedthrough attenuation
picoseconds aperture uncertainty
±2
85mW typical, 135mW maximum power dissipation
INPUT/OUTPUT CONNECTIONS
GENERAL DESCRIPTION
DATEL’s SHM-50 is a high-speed, highly accurate sample/hold designed
for precision, high-speed analog signal processing applications. The
SHM-50 features excellent dynamic specifications including a maximum
acquisition time of only 40 nanoseconds for a 2V step to ±0.01%.
Sample-to-hold settling time, to ±0.01% accuracy, is 20 nanoseconds
maximum with an aperture uncertainty of ±2 picoseconds.
The SHM-50 is a complete sample/hold circuit, containing a preci-
sion MOS hold capacitor and a MOSFET switching configuration which
results in faster switching and better feedthrough attenuation. Addition-
ally, a FET input amplifier design allows faster acquisition and settling
times while maintaining a considerably lower droop rate.
Pin
1
2
3
4
5
6
7
8
Function
+5v Digital Supply
S/H Control
Analog Input
Analog Return
–15v Supply
Analog Output
+15v Analog Supply
Power Ground
–5V
SUPPLY
5
+5V
ANALOG
SUPPLY
7
+5V
DIGITAL
SUPPLY
1
1k
1k
ANALOG INPUT 3
6 ANALOG OUTPUT
S/H CONTROL 2
SWITCH
DRIVER
8
POWER GROUND
4
ANALOG RETURN
Figure 1. Functional Block Diagram
DATEL
•
11 Cabot Boulevard, Mansfield, MA 02048-1151 USA •
Tel: (508) 339-3000
•
www.datel.com
• e-mail: help@datel.com
MDC_SHM-50.B06
Page 1 of 4
®
®
SHM-50
Miniature, High-Speed, Complete ±0.05% Sample Hold Amplifiers
POWER REQUIREMENTS
Voltage Range
+5V Supply
–5V Supply
Power Supply Rejection Ratio
Quiescent Current Drain
+5V Analog Supply
–5V Supply
Power Consumption
PHYSICAL/ENVIRONMENTAL
Operating Temp. Range, Case
SHM-50MC, GC
SHM-50ME, GE
SHM-50MM, GM
Storage Temperature Range
Thermal Impedance
θ
jc
θ
ca
Package Type
MIN.
+4.75
–4.75
—
—
—
—
TYP.
+5.0
–5.0
±0.5
+7
–10
85
MAX.
+5.25
–5.25
±1
+12
–15
135
UNITS
Volts
Volts
mV/V
mA
mA
mW
ABSOLUTE MAXIMUM RATINGS
±5V Supply Voltages
Analog Input
Digital Input
Output Current
±6.6V
±4V
–0.5V to +5.5V
±65 mA
Functional Specifications
Apply over the operating temperature range with ±5Vdc unless otherwise
specified.
ANALOG INPUT/OUTPUT
Input/Output Voltage Range
Input Impedance
Output Current
Output Impedance
Capacitive Load
DIGITAL INPUT
Input Logic Levels
Logic 1
Logic 0
Loading
Logic 1
Logic 0
TRANSFER CHARACTERISTICS
Gain
Gain Error, +25°C
Linearity Error
➀
Sample Mode Offset , +25°C
Sample-to-Hold Offset
(Pedestal), +25°C
➁
Gain Drift
Sample Mode Offset Drift
➀
Sample-to-Hold Off.
(Pedestal) Drift
DYNAMIC CHARACTERISTICS
Acquisition Time
2V to ±0.005%FS (±100μV)
+25°C
–55 to +125°C
2V to ±0.01%FS (±200μV)
+25°C
–55 to +125°C
2V to ±0.1%FS (±2mV)
Sample-to-Hold Settling Time
2V to ±0.005%FS (±100μV)
2V to ±0.01%FS (±200μV)
Sample-to-Hold Transient
Aperture Delay Time
Aperture Uncertainty (Jitter)
Output Slew Rate
Small Signal BW (–3dB)
Output Droop
+25°C
0 to +70°C
–55 to +125°C
Feedthrough Rejection
DATEL
MIN.
–3.5
—
—
—
100
TYP.
—
1000
—
0.1
250
MAX.
+3.5
—
±65
—
—
UNITS
Volts
Ω
mA
Ω
pF
0 to +70°C
–40 to +100°C
–55 to +125°C
–65 to +150°C
15°C/W
35°C/W
8-pin ceramic DIP or SMT
+2.0
0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
–1.5
±0.05
±0.0035
±2
±30
±1
±3
±5
+5.0
+0.8
+5
–5
—
±0.25
±0.005
±7
60
±15
±15
±20
Volts
Volts
μA
μA
V/V
%
%FS
mV
mV
ppm/°C
ppm of FSR/°C
ppm of FSR/°C
Footnotes:
➀
Full Scale (FS) = 2V. Full Scale Range (FSR) = 4V.
➁
Sample-to-hold offset error (pedestal) is constant regardless of input/output level.
—
—
—
—
—
—
—
—
—
—
600
90
—
—
—
—
40
70
30
40
25
15
10
100
2
±2
±650
100
±0.2
±0.3
±5.0
–78
50
TBD
40
50
30
25
20
—
4
±4
—
—
±1.0
±1.0
±12.0
—
•
ns
ns
ns
ns
ns
ns
ns
mVp-p
ns
ps
V/μs
MHz
μV/nS
μV/nS
μV/nS
dB
TECHNICAL NOTES
1.
All ground pins should be tied together and connected to system analog ground
as close to the package as possible. It is recommended to use a ground plane
under the device and solder ground pins directly to it. Take care to ensure that
no ground potentials can exist between ground pins. A single +5V supply can be
used for both +5V Digital Supply (pin 1) and +5V Analog Supply (pin 7).
External 0.1μF to 4.7μF tantalum bypass capacitors are required in critical
applications.
A logic 1 on S/H puts the unit in the sample mode. A logic 0 puts the unit in
hold mode.
Gain and offset adjusting can be accomplished using the external circuitry
shown in Figure 2. Adjust offset with a 0V input. Adjust gain with a ±FS input.
Adjust so that the output in the hold mode matches the input.
Tel: (508) 339-3000
•
www.datel.com
• e-mail: help@datel.com
2.
3.
4.
11 Cabot Boulevard, Mansfield, MA 02048-1151 USA •
MDC_SHM-50.B06
Page 2 of 4
®
®
SHM-50
Miniature, High-Speed, Complete ±0.05% Sample Hold Amplifiers
(GAIN ADJUST)
R1
1k , 0.1%
50
1k , 0.1%
ANALOG
INPUT
TO SHM-50
PIN 3
HIGH-SPEED
FAST-SETTLING
AMPLIFIER
5.11k
3M
–15V
+15V
R2
(OFFSET ADJUST)
Figure 2. Offset and Gain Adjustments
Soldering Guidelines
DATEL recommends the specifications below when installing these convert-
ers. These specifications vary depending on the solder type. Exceeding
these specifications may cause damage to the product. Your production
environment may differ therefore please thoroughly review these guidelines
with your process engineers.
REFLOW SOLDER OPERATIONS FOR SURFACE-MOUNT PRODUCTS (SMT)
For Sn/Ag/Cu based solders:
Preheat Temperature
Less than 1 ºC. per second
Time over Liquidus
45 to 75 seconds
Maximum Peak Temperature
260 ºC.
Cooling Rate
Less than 3 ºC. per second
For Sn/Pb based solders:
Preheat Temperature
Less than 1 ºC. per second
Time over Liquidus
60 to 75 seconds
Maximum Peak Temperature
235 ºC.
Cooling Rate
Less than 3 ºC. per second
Recommended Lead-free Solder Reflow Profile
250
Peak Temp.
235-260° C
200
Temperature (°C)
150
Soaking Zone
120 sec max
100
<1.5° C/sec
50
240 sec max
Reflow Zone
time above 217° C
45-75 sec
Preheating Zone
High trace = normal upper limit
Low trace = normal lower limit
0
0
30
60
90
120
150
Time (sec)
180
210
240
270
300
DATEL
•
11 Cabot Boulevard, Mansfield, MA 02048-1151 USA •
Tel: (508) 339-3000
•
www.datel.com
• e-mail: help@datel.com
MDC_SHM-50.B06
Page 3 of 4
®
®
SHM-50
Miniature, High-Speed, Complete ±0.05% Sample Hold Amplifiers
MECHANICAL DIMENSIONS
Inches (mm)
DIP Package
0.405 MAX.
(10.287)
Dimension Tolerances
(unless otherwise indicated):
2 place decimal (.XX) ±0.001 (±0.25)
3 place decimal (.XXX) ±0.005 (±0.127)
0.300 MAX.
(7.62)
0.140 MAX.
(3.556)
0.09
(2.23)
0.035 ±0.010
(0.89)
0.018 (0.097)
0.400
(10.16)
SHM-50
SMT Package
SHM-50
PIN 1
0.300
(7.62)
0.14
(3.55)
0.200 MAX.
(5.08)
0.054
(1.372)
0.018 ±0.002
(0.457)
0.100 TYP.
(2.540)
0.300 ±0.005
(7.620)
0.010 ±0.002
(0.254)
0.05 (1.27)
0.100 TYP.
(2.54)
0.070 TYP.
(1.78)
0.46
(11.68)
0.300 ±0.015
(7.620)
0.300
(7.62)
0.050
(1.27)
ISO 9001
R E G I S T E R E D
Model Number
SHM-50MC
SHM-50ME
SHM-50MM
SHM-50GC
SHM-50GE
SHM-50GM
SHM-50MC-C
SHM-50ME-C
SHM-50MM-C
SHM-50GC-C
SHM-50GE-C
SHM-50GM-C
ORDERING INFORMATION
Operating Temp. Range Package
0 to +70°C
DIP
-40 to +100°C
DIP
-55 to +125°C
DIP
0 to +70°C
SMT
-40 to +100°C
SMT
-55 to +125°C
SMT
0 to +70°C
DIP
-40 to +100°C
DIP
-55 to +125°C
DIP
0 to +70°C
SMT
-40 to +100°C
SMT
-55 to +125°C
SMT
RoHS
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
For availability of high-reliability versions of the SHM-50, contact DATEL.
DATEL
11 Cabot Boulevard, Mansfield, MA 02048-1151 USA
ITAR and ISO 9001/14001 REGISTERED
. 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.
© 2013
www.datel.com • e-mail: help@datel.com
MDC_SHM-50.B06
Page 4 of 4
Linux与安卓
