Track and Hold (T/H) RTH040
16Pages

RTH040 11 GHz Bandwidth 1 GS/s Dual Track-and-Hold Features ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ 11 GHz Input Bandwidth (0.25 Vpp VIN Differential) 100 - 1000 MHz Sampling Rate (TH1) 10 - 1000 MHz Output Data Rate (TH2) -76 dB Hold Mode Distortion (1.0 GHz 0.25 Vpp VIN Differential) -56 dB Hold Mode Distortion (1.0 GHz 0.25 Vpp VIN SE) -57 dB Hold Mode Distortion (4.0 GHz 0.25 Vpp VIN Differential) -36 dB Hold Mode Distortion (4.0 GHz 0.25 Vpp VIN SE) < 50 fs Aperture Jitter < 200 ps Acquisition Time < 25 ps Rise Time (20 - 80%) Differential Analog Input/Output Output Held more than Half Clock Cycle Track Mode Select Figure 1. Functional Block Diagram Product Description RTH040’s bandwidth and aperture jitter enable 1 GS/s accurate sampling of DC to multi-GHz signals. The differential-to-differential dual trackand-hold cascades two track-and-hold circuits, TH1 and TH2. The RTH040 provides a held output for more than half a clock cycle, easing bandwidth requirements of subsequent circuitry relative to the case of a single track-and-hold (TH). The option to independently clock TH1 and TH2 (as low as 10 MHz) further relaxes this requirement for sub-sampling applications. Ordering information PART NUMBER RTH040-QP RTH040-DI EVRTH040-QP DESCRIPTION 24 Pin QFP Package Die Evaluation Board with a RTH040-QP Teledyne Scientific Company reserves the right to make changes to its product specifications at any time without notice. The information furnished herein is believed to be accurate; however, no responsibility is assumed for its use.

Output Voltages Vterm (Output Termination Voltage) to GND.. -2.5 to +0.5V Temperature Case Temperature …………..……………… -15 to +85 °C Junction Temperature .………………………..….. +125 °C Lead, Soldering (10 Seconds) .………………….. +220 °C Storage ….…………………………………… -40 to 125 °C Teledyne Scientific Company reserves the right to make changes to its product specifications at any time without notice. The information furnished herein is believed to be accurate; however, no responsibility is assumed for its use.

DC Electrical Specification Test Conditions (see notes for specific conditions): Room Temperature; VCC = 5V; VEE = -5.2V; Clocks: 1GHz, 0.6Vpp Differential; Input: 250mV Single-Ended; Outputs Terminated Into 50 Ω to 0V. PARAMETER DC TRANSFER FUNCTION Gain Offset Voltage Common-Mode Rejection TEMPERATURE DRIFT Warm-up Time Gain Drift Offset Voltage Drift CONDITIONS, NOTE Absolute Value 0.25 Vpp at INP and INN, in phase After Power-up After Warm-up, from 20°C to 120°C After Warm-up, from 20°C to 120°C ANALOG INPUT (INP, INN) Input Resistance RIIN Each Lead to GND Input Capacitance CIIN Each...

CONDITIONS, NOTE DYNAMIC TRACK MODE PERFORMANCE, SINEWAVE INPUT -3dB Gain, TH1 & TH2 In Track Track Bandwidth 1000 MHz Mode Gain Flatness Deviation ±0.5 dB Integrated Noise Input Referred 800 μV Noise Floor Input Referred 6.7 nV/√Hz DYNAMIC HOLD MODE PERFORMANCE, SINEWAVE INPUT Gain Flatness Deviation GFD From DC to 6GHz ±1 dB Integrated Noise Input Referred 1600 μV Noise Floor Input Referred 10 nV/√Hz 1 TH1 Hold Feedthrough 500 MHz 1 Vpp Input -72 dB 6 TH1 Hold Feedthrough 1 GHz 1 Vpp Input -68 dB DYNAMIC HOLD MODE PERFORMANCE, SINEWAVE INPUT, 0.25Vpp DIFFERENTIAL Bandwidth BWL -3dB Gain,...

CONDITIONS, NOTE DYNAMIC HOLD MODE PERFORMANCE, SINEWAVE INPUT, 0.5Vpp DIFFERENTIAL Bandwidth BWM -3dB Gain, 0.5 VPP Differential 11 11 SFDR 60 MHz SFDR14 0.5 Vpp Differential Input 83 87 SFDR 1060 MHz SFDR15 0.5 Vpp Differential Input 68 72 SFDR 2060 MHz SFDR16 0.5 Vpp Differential Input 66 69 SFDR 3060 MHz SFDR17 0.5 Vpp Differential Input 55 57 SFDR 4060 MHz SFDR18 0.5 Vpp Differential Input 51 53 SFDR 5060 MHz SFDR19 0.5 Vpp Differential Input 46 48 SFDR 6060 MHz SFDR20 0.5 Vpp Differential Input 43 46 SFDR 7060 MHz SFDR21 0.5 Vpp Differential Input 40 42 SFDR 8060 MHz SFDR22 0.5 Vpp...

CONDITIONS, NOTE TRACK TO HOLD SWITCHING AND HOLD STATE, TH1 After V(CLK1P) - V(CLK1N) Goes Aperture Delay ta Neg. 2,3 Aperture Jitter Jitter Free 1-GHz 0.5-Vpp CLK1 Δt At Hold Capacitors. ttrack1,min Settling Time to 1 mV ts Observed 4 Differential Pedestal/VIN Diff. Droop Rate/VIN 5 Hold Noise Per Sqrt (Hold Time) 6 Maximum Hold Time tHD1,MAX 5 HOLD TO TRACK SWITCHING AND TRACK STATE, TH1 7 Acquisition Time to 1 mV tacq At Hold Caps, FSR Step At Input Max. Acq. Slew Rate Dvdt,max At Hold Caps, FSR Step At Input 20 – 80%, 0.5Vpp input, defined at tr1 the sampling bridge. Rise Time 20 –...

CONDITIONS, NOTE CLOCK INPUTS (CLK1P, CLK1N, CLK2P, CLK2N) 10 Amplitude VCPP Common Mode Voltage VCCM CLK1 Frequency FCLK1 CLK2 Frequency FCLK2 ANALOG INPUT (INP, INN) Full Scale Range FSR Common Mode Voltage VCM DIGITAL INPUT (TMS) Input High Voltage VIH Input Low Voltage VIL Open TMS ≈ –1.4V ANALOG OUTPUT (OUTP, OUTN) Ext. Termination Voltage VTERM Required From Outputs To Vterm Ext. Termination Resistor RTERM POWER SUPPLY REQUIREMENTS Positive Supply Voltage VCC Negative Supply Voltage VEE 11 OPERATING TEMPERATURE Case Temperature Tc Measured at Bottom Plate Junction Temperature Tj For >...

OUTP OUTN FUNCTION Power Supply Ground Positive Power Supply, +5.0V Negative Power Supply, -5.2V Clock 1 Input: High = TH1 in Track Mode Low = TH1 in Hold Mode Complementary Clock 1 Input Clock 2 Input: High = TH2 in Track Mode Low = TH2 in Hold Mode Complementary Clock 2 Input Analog Input Complementary Analog Input Track Mode Select: Open = Sampled operation Ground = TH1 and TH2 in Track Mode Analog Output Complementary Analog Output Figure 2. RTH040-QP pin configuration (top view, not to scale) 24-lead Quad Flat Package (QFP). Teledyne Scientific Company reserves the right to make...