® SHM-4860 ® Industry-Standard, High-Speed ±0.01% Sample-Hold Amplifiers FEATURES PRODUCT OVERVIEW 200ns Maximum acquisition time 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. ±0.01% Accuracy 100ns Maximum sample-hold settling time 74dB Feedthrough attenuation ±50ps Aperture uncertainty Industry standard The SHM-4860 is a complete sample-hold circuit, containing a precision MOS hold capacitor and a MOSFET switching configuration which results in faster switching and better feedthrough attenuation. Additionally, a FET-input amplifier design allows faster acquisition and settling times while maintaining a considerably lower droop rate. SIMPLIFIED SCHEMATIC 1k CH 1k INPUT 13 1 OUTPUT + 9 +5V SUPPLY 24 +15V SUPPLY HOLD COMMAND 11 SWITCH DRIVER HOLD COMMAND 12 10 15 22 –15V SUPPLY 23 21 INTERNAL SUPPLY BYPASS CAPACITORS SYSTEM GROUND Figure 1. Functional Block Diagram DATEL • 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com 12 Sep 2012 • e-mail: [email protected] MDA_SHM-4860.B04 Page 1 of 3 ® SHM-4860 ® Industry-Standard, High-Speed ±0.01% Sample-Hold Amplifiers DYNAMIC CHARACTERISTICS , Continued ABSOLUTE MAXIMUM RATINGS Positive Supply (Vcc) –0.3 to +18Vdc Aperture Delay Time — 6 — ns Negative Supply (Vee) +0.3 to –18Vdc Aperture Uncertainty (Jitter) — ±50 — ps +5V Supply Voltage, Pin 9 –0.5V to +7V Output Slew Rate — ±300 — μV/μs Analog Input, Pin 13 ±18V Output Slew Rate — ±300 — μV/μs Digital Inputs, Pins 11, 12 –0.5V to +7V Small Signal Bandwidth (–3dB) — 8 — MHz Output Current ±65mA Droop: +25°C — ±0.5 ±5 μV/μs +70°C — ±15 — μV/μs +125°C — ±1.2 1.8 mV/μs — 74 — dB Functional Specifications Feedthrough Attenuation (Typical at +25°C with ±15V and +5V supplies unless otherwise noted.) ANALOG INPUT/OUTPUT Overload Recovery Time MIN. TYP. MAX. UNITS Positive — 200 — ns Input/Output Voltage Range ±10.25 ±11.25 — V Negative — 700 — ns Input Impedance — 1 — kΩ Output Current — — ±50 mA 0.1 — Ω — 250 — pF Output Impedance Maximum Capacitive Load DIGITAL INPUT POWER REQUIREMENTS Voltage Range: ±15V Supplies — ±3 — % — ±5 — % — ±0.5 — mV/V +15V Supply — +21 +25 mA +5V Supply Power Supply Rejection Ratio Quiescent Current Drain Input Logic Level Logic "1" +2.0 — +5.0 V –15V Supply — –22 –25 mA Logic "0" 0 — +0.8 V +5V Supply — +17 +25 mA — 730 975 mW — — +40 μA — — –1.6 mA Loading Power Consumption Logic "1" Logic "0" TRANSFER CHARACTERISTICS PHYSICAL/ENVIRONMENTAL Operating Temperature Ranges SHM-4860MC 0 to +70°C (ambient) SHM-4860MM, 883 –55 to +125°C (case) Gain — –1 — V/V Gain Accuracy — ±0.05 ±0.1 % Storage Temperature Range –65 to +150°C Gain Linearity Error — ±0.005 ±0.01 %FS Package Type 24-pin ceramic DDIP Sample-Mode Offset Voltage — ±0.5 ±5 mV Output Sample-to-Hold Offset Error (Pedestal) — ±2.5 ±20 mV Gain Tempco (Drift) — ±0.5 ±5 ppm/°C Sample-Mode Offset Drift — ±3 ±15 Sample-to-Hold Offset Drift — ±4 — DYNAMIC CHARACTERISTICS Acquisition Time 10V to ±0.01%FS — 160 200 ns 10V to ±0.1%FS — 100 170 ns 10V to ±1%FS — 90 — ns 1V to ±1%FS — 75 — ns — 60 100 ns Sample-to-Hold Settling Time 10V to ±0.01%FS 10V to ±0.1%FS Sample-to-Hold Transient DATEL — 40 — ns — 180 — mV p-p • Footnotes: Input signal should not exceed the supply voltage. The SHM-4860’s output is current limited at approximately ±50mA. The device can withstand a sustained 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. Full Scale (FS) = 10V. Full Scale Range (FSR) = 20V. Sample-to-Hold Offset Error (Pedestal) is constant regardless of input/output level. 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. 11 Cabot Boulevard, Mansfield, MA 02048-1151 USA • Tel: (508) 339-3000 • www.datel.com 12 Sep 2012 • e-mail: [email protected] MDA_SHM-4860.B04 Page 2 of 3 ® SHM-4860 ® Industry-Standard, High-Speed ±0.01% Sample-Hold Amplifiers ORDERING GUIDE SUMMARY Model Number SHM-4860MC SHM-4860MM SHM-4860/883 SHM-4860MM-QL INPUT/OUTPUT CONNECTIONS PIN FUNCTION Operating Temperature Range 0 to +70°C –55 to +125°C –55 to +125°C –55 to +125°C PIN FUNCTION 1 OUTPUT 24 +15V SUPPLY 2 N.C. 23 GROUND 3 N.C. 22 –15V SUPPLY 4 N.C. 21 GROUND 5 N.C. 20 N.C. 6 N.C. 19 N.C. 7 N.C. 18 N.C. 8 N.C. 17 N.C. 9 +5V SUPPLY 16 N.C. 10 GROUND 15 GROUND 11 HOLD COMMAND 14 N.C. 12 HOLD COMMAND 13 INPUT MECHANICAL SPECIFICATIONS 1.31 MAX. (33.27) 24-PIN DDIP 24 (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 Kovar alloy 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) 0.200 MAX. (5.080) +0.002 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) 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 . 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 www.datel.com • e-mail: [email protected] 12 Sep 2012 MDA_SHM-4860.B04 Page 3 of 3