Texas Instruments THS770012IRGER

Overview

THS770012IRGER from Texas Instruments is a broadband, fully-differential ADC driver amplifier optimized for 14-/16-bit analog-to-digital converters, delivering +12dB gain, 680MHz small-signal bandwidth at 2V_PP, –100dBc third-order intermodulation distortion at 100MHz, and 3300V/µs slew rate. It operates on a +5V single supply and drives differential inputs of high-speed data acquisition systems in wireless base stations and test equipment.

For engineers reviewing the THS770012IRGER datasheet, THS770012IRGER pinout, THS770012IRGER application, or THS770012IRGER equivalent, key selection criteria include its 130MHz 0.1dB flatness bandwidth, VOCM-controlled output common-mode voltage, 10.7dB noise figure at 100MHz, and QFN-24 thermal-enhanced package with integrated ground pad.

Technical Context

The THS770012IRGER employs a fully-differential architecture with independent VOCM input for precise output common-mode control and external gain-setting resistors (GS+/GS–) enabling adjustable gain from +10dB to +13.7dB. Its high slew rate and fast 7.5ns overdrive recovery support clean transient response in wideband sampling systems.

Designed specifically for driving 16-bit ADCs up to 130MHz input frequency and 14-bit ADCs up to 200MHz, it maintains low harmonic distortion (–84dBc HD3 at 100MHz) and high OIP3 (47dBm at 100MHz) under 400Ω differential load conditions with 2V_PP output swing.

Key Specifications

Pinout & Package

VQFN-24 (RGE) thermally enhanced package with exposed thermal pad tied to GND; 4mm × 4mm body, 0.5mm pitch, 24-pin layout optimized for RF signal integrity and thermal dissipation in high-density PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ADC driver applications.

Compared with THS4509IRGTR and PGA870IRHPT, the THS770012IRGER uniquely combines externally adjustable gain, analog VOCM control, and optimized 130MHz flatness for fixed-gain, high-SFDR ADC interfacing-making it ideal for cost-sensitive, high-volume wireless infrastructure front-ends where design simplicity and RF linearity are prioritized.

Availability

THS770012IRGER is available at Aetrix Electronics and suitable for GSM/WCDMA base station receivers, high-speed test equipment front-ends, and LTE massive MIMO channel emulators requiring stable component supply with guaranteed long-term availability.

Supply support for THS770012IRGER includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in high-performance signal chain solutions.

The THS770012IRGER belongs to TI's high-speed differential amplifier product line, engineered for ultra-low distortion and wide bandwidth in ADC interface applications demanding >90dB SFDR and sub-nanosecond timing accuracy.

FAQ

What is the recommended power supply configuration for THS770012IRGER?

The THS770012IRGER operates on a nominal +5V single supply (4.75V to 5.25V). Multiple VS+ pins (20–23) and GND pins (8–11, thermal pad) must be decoupled with 100nF ceramic capacitors placed close to the package. The thermal pad must be soldered to a solid GND plane to achieve θ_JA = 44.1°C/W and prevent thermal shutdown during sustained 100mA output current. THS770012IRGER draws 85–115mA quiescent current at +25°C.

How does the VOCM pin function in THS770012IRGER?

The VOCM pin on THS770012IRGER sets the DC common-mode voltage of the differential outputs (V_OUT+ and V_OUT–). With VOCM = 2.5V, outputs center at 2.5V; the device supports 2.25V to 2.75V input range and provides 0.98–1.02V/V gain from VOCM to output common-mode. VOCM has 300MHz bandwidth and 150V/µs slew rate, allowing dynamic adjustment without signal corruption. THS770012IRGER maintains <±12mV output offset from VOCM under all conditions.

Can THS770012IRGER drive a 100Ω differential ADC input directly?

Yes, THS770012IRGER can drive 100Ω differential loads, though gain accuracy shifts slightly (11.4–11.85dB vs. 11.65–12.15dB at 400Ω). Output voltage swing reduces to 4.4–4.8V_PP, and harmonic distortion increases marginally. For optimal SFDR, TI recommends using 400Ω loads with series termination; THS770012IRGER's 4Ω output impedance at 100MHz ensures good match. THS770012IRGER maintains –97dBc IMD3 at 100MHz into 100Ω, sufficient for most 14-bit applications.

What is the minimum recommended PCB layout practice for THS770012IRGER?

THS770012IRGER requires symmetric, 50Ω-controlled differential traces from VIN+ to VIN– and VOUT+ to VOUT–, with ground vias adjacent to each GND pin (8–11, thermal pad). The thermal pad must be connected to a solid internal GND plane using ≥4 thermal vias (0.3mm diameter). Gain-setting resistors (GS+/GS–) should be placed within 2mm of their respective pins, and VOCM routing must avoid noisy digital traces. THS770012IRGER's RF performance degrades if input/output return loss falls below –16dB (s22) or –18dB (s11).

Does THS770012IRGER support power-down mode, and how is it controlled?

Yes, THS770012IRGER features an active-high power-down mode controlled by the PD pin (Pin 2). Driving PD >2.0V places the device in sleep mode, reducing quiescent current to 0.8–3mA. Turn-off delay is 0.15µs; turn-on delay is 10µs to reach 90% of final output. During power-down, outputs enter high-impedance state. THS770012IRGER resumes full performance immediately upon PD falling below 0.5V, with no initialization sequence required.