THS3215

활성

DC-650MHz, 차동-단일 종단, DAC 출력 증폭기

지금 주문

데이터 시트

document-pdfAcrobat THS3215 650-MHz, Differential to Single-Ended DAC Output Amplifier datasheet (Rev. C) (영어) PDF | HTML

THS3215

활성

데이터 시트

지금 주문

제품 상세 정보

Architecture

Current FB

Number of channels

1

Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)

8

Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)

15.8

GBW (typ) (MHz)

650

BW at Acl (MHz)

650

Acl, min spec gain (V/V)

3

Slew rate (typ) (V/µs)

3000

Vn at flatband (typ) (nV√Hz)

6.6

Vn at 1 kHz (typ) (nV√Hz)

22

Iq per channel (typ) (mA)

34.5

Vos (offset voltage at 25°C) (max) (mV)

18

Rail-to-rail

No

Features

Differential-to-single-ended conversion, Shutdown

Rating

Catalog

Operating temperature range (°C)

-40 to 85

CMRR (typ) (dB)

48

Input bias current (max) (pA)

4000000

Offset drift (typ) (µV/°C)

58

Iout (typ) (mA)

95

2nd harmonic (dBc)

66

3rd harmonic (dBc)

68

Frequency of harmonic distortion measurement (MHz)

20

Architecture

Current FB

Number of channels

1

Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V)

8

Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V)

15.8

GBW (typ) (MHz)

650

BW at Acl (MHz)

650

Acl, min spec gain (V/V)

3

Slew rate (typ) (V/µs)

3000

Vn at flatband (typ) (nV√Hz)

6.6

Vn at 1 kHz (typ) (nV√Hz)

22

Iq per channel (typ) (mA)

34.5

Vos (offset voltage at 25°C) (max) (mV)

18

Rail-to-rail

No

Features

Differential-to-single-ended conversion, Shutdown

Rating

Catalog

Operating temperature range (°C)

-40 to 85

CMRR (typ) (dB)

48

Input bias current (max) (pA)

4000000

Offset drift (typ) (µV/°C)

58

Iout (typ) (mA)

95

2nd harmonic (dBc)

66

3rd harmonic (dBc)

68

Frequency of harmonic distortion measurement (MHz)

20

Input stage: internal gain of 2 V/V
- Buffered differential inputs
- Single-ended low impedance output
- Full-power bandwidth: 350 MHz (2 V_PP)
Output stage: gain externally configurable
- Full-power bandwidth: 270 MHz (5 V_PP)
- Slew rate: 3000 V/µs
- SPDT input switch and multiplexer
Full signal path: input stage and output stage
- HD2 (20 MHz, 5 V_PP to 100 Ω load): –66 dBc
- HD3 (20 MHz, 5 V_PP to 100 Ω load): –68 dBc
- 10 V_PP Output to 100 Ω load using split ±6.5 V supply
- 12 V_PP Output to heavy capacitive loads using single 15 V supply
Internal DC reference buffer with low-impedance output
Power-supply range:
- Split supply: ±4 V to ±7.9 V
- Single supply: 8 V to 15.8 V

Input stage: internal gain of 2 V/V
- Buffered differential inputs
- Single-ended low impedance output
- Full-power bandwidth: 350 MHz (2 V_PP)
Output stage: gain externally configurable
- Full-power bandwidth: 270 MHz (5 V_PP)
- Slew rate: 3000 V/µs
- SPDT input switch and multiplexer
Full signal path: input stage and output stage
- HD2 (20 MHz, 5 V_PP to 100 Ω load): –66 dBc
- HD3 (20 MHz, 5 V_PP to 100 Ω load): –68 dBc
- 10 V_PP Output to 100 Ω load using split ±6.5 V supply
- 12 V_PP Output to heavy capacitive loads using single 15 V supply
Internal DC reference buffer with low-impedance output
Power-supply range:
- Split supply: ±4 V to ±7.9 V
- Single supply: 8 V to 15.8 V

The THS3215 combines the key signal-chain components required to interface with a complementary-current output, digital-to-analog converter (DAC).

The flexibility provided by this two-stage amplifier system delivers the low distortion, dc-coupled, differential to single-ended signal processing required by a wide range of systems.The input stage buffers the DAC resistive termination, and converts the signal from differential to single-ended with a fixed gain of 2 V/V. The differential to single-ended output is available externally for direct use, and can also be connected through an RLC filter or attenuator to the input of an internal output power stage (OPS). The wideband, current-feedback, output power stage provides all pins externally for flexible gain setting.

An internal 2 × 1 multiplexer (mux) to the output power stage noninverting input provides an easy means to select between the internal differential-to-single-ended stage (D2S) output or an external input.

An optional on-chip midsupply buffer provides a wideband, low-output-impedance source for biasing during single-supply operation through the signal-path stages. This feature provides very simple biasing for single-supply, ac-coupled applications operating up to a maximum 15.8-V supply. An external input to this buffer allows for a dc error-correction loop, or a simple output dc offset feature.

A companion device, the THS3217, provides the same functional features at higher quiescent power and bandwidth. The THS3215 and THS3217 support the emerging high-speed Texas Instruments DACs for AWG applications, such as the DAC38J82.

The THS3215 combines the key signal-chain components required to interface with a complementary-current output, digital-to-analog converter (DAC).

The flexibility provided by this two-stage amplifier system delivers the low distortion, dc-coupled, differential to single-ended signal processing required by a wide range of systems.The input stage buffers the DAC resistive termination, and converts the signal from differential to single-ended with a fixed gain of 2 V/V. The differential to single-ended output is available externally for direct use, and can also be connected through an RLC filter or attenuator to the input of an internal output power stage (OPS). The wideband, current-feedback, output power stage provides all pins externally for flexible gain setting.

An internal 2 × 1 multiplexer (mux) to the output power stage noninverting input provides an easy means to select between the internal differential-to-single-ended stage (D2S) output or an external input.

An optional on-chip midsupply buffer provides a wideband, low-output-impedance source for biasing during single-supply operation through the signal-path stages. This feature provides very simple biasing for single-supply, ac-coupled applications operating up to a maximum 15.8-V supply. An external input to this buffer allows for a dc error-correction loop, or a simple output dc offset feature.

A companion device, the THS3217, provides the same functional features at higher quiescent power and bandwidth. The THS3215 and THS3217 support the emerging high-speed Texas Instruments DACs for AWG applications, such as the DAC38J82.

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