The THS4521, THS4522, and THS4524 family of devices are very low-power, fully differential amplifiers with rail-to-rail output and an input common-mode range that includes the negative rail. These amplifiers are designed for low-power data acquisition systems and high-density applications where power dissipation is a critical parameter, and provide exceptional performance in audio applications.
The family includes single FDA (THS4521), dual FDA (THS4522), and quad FDA (THS4524) versions.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
THS4521 | SOIC (8) | 4.90 mm × 3.91 mm |
VSSOP (8) | 3.00 mm × 3.00 mm | |
THS4522 | TSSOP (16) | 5.00 mm × 4.40 mm |
THS4524 | TSSOP (38) | 9.70 mm × 4.40 mm |
Changes from G Revision (December 2014) to H Revision
Changes from F Revision (September 2011) to G Revision
Changes from E Revision (December 2010) to F Revision
Changes from D Revision (August 2010) to E Revision
These fully differential amplifiers feature accurate output common-mode control that allows for dc-coupling when driving analog-to-digital converters (ADCs). This control, coupled with an input common-mode range below the negative rail as well as rail-to-rail output, allows for easy interfacing between single-ended, ground-referenced signal sources. Additionally, these devices are ideally suited for driving both successive-approximation register (SAR) and delta-sigma (ΔΣ) ADCs using only a single +2.5V to +5V and ground power supply.
The THS4521, THS4522, and THS4524 family of fully differential amplifiers is characterized for operation over the full industrial temperature range from –40°C to +85°C. Table 1 shows a comparison of the THS4521 device to similar TI devices.
PIN | DESCRIPTION | |
---|---|---|
NAME | NO. | |
VIN– | 1 | Inverting amplifier input |
VOCM | 2 | Common-mode voltage input |
VS+ | 3 | Amplifier positive power-supply input |
VOUT+ | 4 | Noninverting amplifier output |
VOUT– | 5 | Inverting amplifier output |
VS– | 6 | Amplifier negative power-supply input. Note that VS– is tied together on multi-channel devices. |
PD | 7 | Power down. PD = logic low puts device into low-power mode. PD = logic high or open for normal operation. |
VIN+ | 8 | Noninverting amplifier input |
PIN | DESCRIPTION | |
---|---|---|
NAME | NO. | |
PD1 | 1 | Power down 1. PD = logic low puts device into low-power mode. PD = logic high or open for normal operation. |
VIN1+ | 2 | Noninverting amplifier 1 input |
VIN1– | 3 | Inverting amplifier 1 input |
VOCM1 | 4 | Common-mode voltage input 1 |
PD2 | 5 | Power down 2. PD = logic low puts device into low-power mode. PD = logic high or open for normal operation. |
VIN2+ | 6 | Noninverting amplifier 2 input |
VIN2– | 7 | Inverting amplifier 2 input |
VOCM2 | 8 | Common-mode voltage input 2 |
VS+2 | 9 | Amplifier 2 positive power-supply input |
VOUT2+ | 10 | Noninverting amplifier 2 output |
VOUT2– | 11 | Inverting amplifier 2 output |
VS– | 12 | Negative power-supply input. Note that VS– is tied together on multi-channel devices. |
VS+1 | 13 | Amplifier 1 positive power-supply input |
VOUT1+ | 14 | Noninverting amplifier 1 output |
VOUT1– | 15 | Inverting amplifier 1 output |
VS– | 16 | Negative power-supply input. Note that VS– is tied together on multi-channel devices. |
PIN | DESCRIPTION | |
---|---|---|
NAME | NO. | |
PD1 | 1 | Power down 1. PD = logic low puts channel into low-power mode. PD = logic high or open for normal operation. |
VIN1+ | 2 | Noninverting amplifier 1 input |
VIN1– | 3 | Inverting amplifier 1 input |
VOCM1 | 4 | Common-mode voltage input 1 |
VS– | 5 | Negative power-supply input. Note that VS– is tied together on multi-channel devices. |
PD2 | 6 | Power down 2. PD = logic low puts channel into low-power mode. PD = logic high or open for normal operation. |
VIN2+ | 7 | Noninverting amplifier 2 input |
VIN2– | 8 | Inverting amplifier 2 input |
VOCM2 | 9 | Common-mode voltage input 2 |
VS– | 10 | Negative power-supply input. Note that VS– is tied together on multi-channel devices. |
PD3 | 11 | Power down 3. PD = logic low puts channel into low-power mode. PD = logic high or open for normal operation. |
VIN3+ | 12 | Noninverting amplifier 3 input |
VIN3– | 13 | Inverting amplifier 3 input |
VOCM3 | 14 | Common-mode voltage input 3 |
VS– | 15 | Negative power-supply input. Note that VS– is tied together on multi-channel devices. |
PD4 | 16 | Power down 4. PD = logic low puts channel into low-power mode. PD = logic high or open for normal operation. |
VIN4+ | 17 | Noninverting amplifier 4 input |
VIN4– | 18 | Inverting amplifier 4 input |
VOCM4 | 19 | Common-mode voltage input 4 |
VS4+ | 20 | Amplifier 4 positive power-supply input |
VOUT4+ | 21 | Noninverting amplifier 4 output |
VOUT4– | 22 | Inverting amplifier 4 output |
VS– | 23 | Negative power-supply input. Note that VS– is tied together on multi-channel devices. |
VS– | 24 | Negative power-supply input. Note that VS– is tied together on multi-channel devices. |
VS3+ | 25 | Amplifier 3 positive power-supply input |
VOUT3+ | 26 | Noninverting amplifier3 output |
VOUT3– | 27 | Inverting amplifier3 output |
VS– | 28 | Negative power-supply input. Note that VS– is tied together on multi-channel devices. |
VS– | 29 | Negative power-supply input. Note that VS– is tied together on multi-channel devices. |
VS2+ | 30 | Amplifier 2 positive power-supply input |
VOUT2+ | 31 | Noninverting amplifier 2 output |
VOUT2– | 32 | Inverting amplifier 2 output |
VS– | 33 | Negative power-supply input. Note that VS– is tied together on multi-channel devices. |
VS– | 34 | Negative power-supply input. Note that VS– is tied together on multi-channel devices. |
VS1+ | 35 | Amplifier 1 positive power-supply input |
VOUT1+ | 36 | Noninverting amplifier 1 output |
VOUT1– | 37 | Inverting amplifier 1 output |
VS– | 38 | Negative power-supply input. Note that VS– is tied together on multi-channel devices. |