The THS4509 device is a wideband, fully-differential op amp designed for 5-V data acquisition systems. It has a low noise at 1.9 nV/√Hz, and low harmonic distortion of –75 dBc HD2 and –80 dBc HD3 at 100 MHz with 2 VPP, G = 10 dB, and 1-kΩ load. Slew rate is high at 6600 V/µs, and with settling time of 2 ns to 1% (2-V step), it is ideal for pulsed applications. It is designed for a minimum gain of 6 dB, but is optimized for gains of 10 dB.
To allow for DC coupling to analog-to-digital converters (ADCs), its unique output common-mode control circuit maintains the output common-mode voltage within 3-mV offset (typical) from the set voltage, when set within 0.5-V of midsupply, with less than 4-mV differential offset voltage. The common-mode set point is set to midsupply by internal circuitry, which may be overdriven from an external source.
The input and output are optimized for best performance with the common-mode voltages set to midsupply. Along with high performance at low power-supply voltage, this design makes it ideal for high-performance, single-supply 5-V data acquisition systems. The combined performance of the THS4509 in a gain of 10 dB driving the ADS5500 ADC, sampling at 125 MSPS, is 81-dBc SFDR and 69.1-dBc SNR with a –1 dBFS signal at 70 MHz.
The THS4509 is offered in a quad, leadless VQFN-16 package (RGT), and is characterized for operation over the full industrial temperature range from –40°C to +85°C.
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|Part number||Order||2nd harmonic (dBc)||3rd harmonic (dBc)||@ MHz||Acl, min spec gain (V/V)||Approx. price (US$)||Architecture||BW @ Acl (MHz)||Device type||Features||GBW (Typ) (MHz)||Number of channels (#)||Operating temperature range (C)||Package Group||Package size: mm2:W x L (PKG)||Slew rate (Typ) (V/us)||Total supply voltage (Min) (+5V=5, +/-5V=10)||Total supply voltage (Max) (+5V=5, +/-5V=10)||Vn at flatband (Typ) (nV/rtHz)||Vn at 1 kHz (Typ) (nV/rtHz)||Vos (offset voltage @ 25 C) (Max) (mV)|
||104||108||10||2||3.50 | 1ku||Fully Differential ADC Driver||2000||RF FDA||
|3000||1||-40 to 85||VQFN | 16||16VQFN: 9 mm2: 3 x 3 (VQFN | 16)||6600||3||5.25||1.9||10||4|
|THS4508||Samples not available||104||105||10||2||5.18 | 1ku||Fully Differential ADC Driver||2000||RF FDA||
|3000||1||-40 to 85||VQFN | 16||16VQFN: 9 mm2: 3 x 3 (VQFN | 16)||6400||3.75||5.25||2.3||2.3||4|
|THS4511||Samples not available||117||106||10||1||5.45 | 1ku||Fully Differential ADC Driver||1600||RF FDA||Shutdown||2000||1||-40 to 85||VQFN | 16||16VQFN: 9 mm2: 3 x 3 (VQFN | 16)||4900||3.75||5.25||2||20||4|
||110||108||10||1||4.47 | 1ku||Fully Differential ADC Driver||1600||RF FDA||Shutdown||2800||1||-40 to 85||VQFN | 16||16VQFN: 9 mm2: 3 x 3 (VQFN | 16)|