®
®
SHM-4860
Industry-Standard, High-Speed ±0.01% Sample-Hold Amplifiers
FEATURES
200ns Maximum acquisition time
±0.01% Accuracy
100ns Maximum sample-hold settling time
74dB Feedthrough attenuation
±50ps Aperture uncertainty
Industry standard
PRODUCT OVERVIEW
DATEL’s SHM-4860 is a high-speed, highly
accurate sample hold amplifier designed for
precision, high-speed analog signal processing
applications. Manufactured using modern, high
quality hybrid technology, the SHM-4860 features
excellent dynamic specifications including a
maximum acquisition time of only 200ns for a 10V
step to ±0.01%. Sample-to-hold settling time, to
±0.01% accuracy, is 100ns maximum with an
aperture uncertainty of ±50ps.
The SHM-4860 is a complete sample-hold cir-
cuit, containing a precision MOS hold capacitor and
a MOSFET switching configuration which results in
faster switching and better feedthrough attenu-
ation. Additionally, a FET-input amplifier design
allows faster acquisition and settling times while
maintaining a considerably lower droop rate.
SIMPLIFIED SCHEMATIC
1k
1k
INPUT 13
C
H
1 OUTPUT
+
9 +5V SUPPLY
24 +15V SUPPLY
SWITCH
DRIVER
22 –15V SUPPLY
HOLD COMMAND 11
HOLD COMMAND 12
10
15
21
SYSTEM GROUND
23
INTERNAL
SUPPLY BYPASS
CAPACITORS
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
04 Apr 2011 MDA_SHM-4860.B03
Page 1 of 3
®
®
SHM-4860
Industry-Standard, High-Speed ±0.01% Sample-Hold Amplifiers
DYNAMIC CHARACTERISTICS , Continued
Aperture Delay Time
Aperture Uncertainty (Jitter)
—
—
—
—
—
—
—
—
—
6
±50
±300
±300
16
±0.5
±15
±1.2
74
—
—
—
—
—
±5
—
—
—
ns
ps
μV/μs
μV/μs
MHz
μV/μs
μV/μs
mV/μs
dB
ABSOLUTE MAXIMUM RATINGS
I±15V Supply Voltages, Pins 24, 22
+5V Supply Voltage, Pin 9
Analog Input, Pin 13
c
Digital Inputs, Pins 11, 12
Output Current
d
±18V
–0.5V to +7V
±18V
–0.5V to +7V
±65mA
Output Slew Rate
Output Slew Rate
Small Signal Bandwidth (–3dB)
Droop: +25°C
+70°C
Functional Specifications
(Typical at +25°C with ±15V and +5V supplies unless otherwise noted.)
+125°C
Feedthrough Attenuation
Overload Recovery Time
MAX.
—
—
±40
—
—
UNITS
V
kΩ
mA
Ω
pF
Voltage Range: ±15V Supplies
+5V Supply
Power Supply Rejection Ratio
Quiescent Current Drain
+15V Supply
+2.0
0
—
—
+5.0
+0.8
V
V
–15V Supply
+5V Supply
Power Consumption
—
—
—
—
+40
–1.6
μA
mA
Positive
Negative
ANALOG INPUT/OUTPUT
MIN.
Input/Output Voltage Range
c
Input Impedance
Output Current
d
Output Impedance
Maximum Capacitive Load
—
DIGITAL INPUT
Input Logic Level
Logic "1"
Logic "0"
Loading
Logic "1"
Logic "0"
±10.25
—
—
TYP.
±11.25
1
—
0.1
250
—
—
200
700
—
—
ns
ns
POWER REQUIREMENTS
—
—
—
±3
±5
±0.5
—
—
—
%
%
mV/V
—
—
—
—
+21
–22
+17
730
+25
–25
+25
875
mA
mA
mA
mW
PHYSICAL/ENVIRONMENTAL
Operating Temperature Ranges
SHM-4860MC
0 to +70°C (ambient)
–55 to +125°C (case)
–65 to +150°C
24-pin ceramic DDIP
TRANSFER CHARACTERISTICS
Gain
Gain Accuracy
Gain Linearity Error
e
Sample-Mode Offset Voltage
Sample-to-Hold Offset Error
f
(Pedestal)
Gain Tempco (Drift)
Sample-Mode Offset Drift
Sample-to-Hold Offset Drift
—
—
—
—
—
—
—
—
–1
±0.05
±0.005
±0.5
±2.5
±0.5
±3
±4
—
±0.1
±0.01
±5
±20
±5
±15
—
V/V
%
%FS
mV
mV
ppm/°C
g
g
SHM-4860MM, 883
Storage Temperature Range
Package Type
Output
Footnotes:
c
Input signal should not exceed the supply voltage.
d
The SHM-4860’s output is current limited at approximately ±65mA. The device can withstand a sus-
tained short to ground. However, shorts from the output to either supply will cause permanent damage.
For normal operation, the load current should not exceed ±40mA.
e
Full Scale (FS) = 10V. Full Scale Range (FSR) = 20V.
f
Sample-to-Hold Offset Error (Pedestal) is constant regardless of input/output level.
g
Units are ppm of FSR/°C.
TECHNICAL NOTES
1. All ground pins (10, 15, 21, 23) 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 all four ground pins directly to it. Care must be taken to ensure that no ground potentials
can exist between Pin 10 and the other ground pins.
2. Although the power supply pins (9, 22, 24) are internally bypassed to ground with 0.01μF ceramic
capacitors, additional external 0.1μF to 1μF tantalum bypass capacitors may be required in critical
applications.
3. A logic "0" on the HOLD COMMAND input (Pin 11), or a logic "1" on the HOLD COMMAND input
(Pin 12), will put the device in the sample mode. In this mode, the device acts as an inverting unity-gain
amplifier, and its output will track its input. A logic "1" on Pin 11 (logic "0" on Pin 12) will put the device
in the hold mode, and the output will be held constant at the last input level present when the hold
command was given. If the HOLD COMMAND input (Pin 11) is used to control the device, Pin 12 must
be tied to digital ground. If HOLD COMMAND input (Pin 12) is used to control the device, Pin
11 must be tied to +5V.
4. The maximum capacitive load to avoid oscillation is typically 250pF. Recommended resistive load is
500:, although values as low as 250: may be used. Acquisition and sample-to-hold settling times are
relatively unaffected by resistive loads down to 250: and capacitive loads up to 50pF. However, higher
capacitances will affect both acquisition and settling time.
Tel: (508) 339-3000
•
www.datel.com
• e-mail: help@datel.com
DYNAMIC CHARACTERISTICS
Acquisition Time
10V to ±0.01%FS
10V to ±0.1%FS
10V to ±1%FS
1V to ±1%FS
Sample-to-Hold Settling Time
10V to ±0.01%FS
10V to ±0.1%FS
Sample-to-Hold Transient
—
—
—
60
40
180
100
—
—
ns
ns
mV p-p
—
—
—
—
160
100
90
75
200
170
—
—
ns
ns
ns
ns
DATEL
•
11 Cabot Boulevard, Mansfield, MA 02048-1151 USA •
04 Apr 2011 MDA_SHM-4860.B03
Page 2 of 3
®
®
SHM-4860
Industry-Standard, High-Speed ±0.01% Sample-Hold Amplifiers
INPUT/OUTPUT CONNECTIONS
PIN
FUNCTION
1
2
3
4
5
6
7
8
9
10
11
12
OUTPUT
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
+5V SUPPLY
GROUND
HOLD COMMAND
HOLD COMMAND
ORDERING GUIDE SUMMARY
Model Number
SHM-4860MC
SHM-4860MM
SHM-4860/883
PIN
24
23
22
21
20
19
18
17
16
15
14
13
FUNCTION
+15V SUPPLY
GROUND
–15V SUPPLY
GROUND
N.C.
N.C.
N.C.
N.C.
N.C.
GROUND
N.C.
INPUT
Operating Temperature Range
0 to +70°C
–55 to +125°C
–55 to +125°C
MECHANICAL SPECIFICATIONS
1.31 MAX.
(33.27)
24-PIN DDIP
(unless otherwise indicated):
2 place decimal (.XX) ±0.010 (±0.254)
3 place decimal (.XXX) ±0.005 (±0.127)
0.80 MAX.
(20.32)
Kovar alloy
50 microinches (minimum) gold plating
over 100 microinches (nominal) nickel plating
24
13
1
12
0.100 TYP.
(2.540)
1.100
(27.940)
0.235 MAX.
(5.969)
0.200 MAX.
(5.080)
0.010
–0.001
(0.254)
0.190 MAX.
(4.826)
0.018 ±0.002
(0.457)
0.100
(2.540)
0.040
(1.016)
+0.002
SEATING
PLANE
0.025
(0.635)
0.600 ±0.010
(15.240)
0.100
(2.540)
Dimensions in inches (mm)
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.
www.datel.com • e-mail: help@datel.com
04 Apr 2011 MDA_SHM-4860.B03
Page 3 of 3
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