TLV9001UIDBVR datasheet(27/109 Pages) TI2

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Table 8-1. TLV900x EMIRR IN+ For Frequencies of Interest

FREQUENCY

APPLICATION OR ALLOCATION

EMIRR IN+

400 MHz

Mobile radio, mobile satellite, space operation, weather, radar, ultra-high frequency (UHF)

applications

59.5 dB

900 MHz

Global system for mobile communications (GSM) applications, radio communication, navigation,

GPS (to 1.6 GHz), GSM, aeronautical mobile, UHF applications

68.9 dB

1.8 GHz

GSM applications, mobile personal communications, broadband, satellite, L-band (1 GHz to 2 GHz)

77.8 dB

2.4 GHz

802.11b, 802.11g, 802.11n, Bluetooth®, mobile personal communications, industrial, scientific and

medical (ISM) radio band, amateur radio and satellite, S-band (2 GHz to 4 GHz)

78.0 dB

3.6 GHz

Radiolocation, aero communication and navigation, satellite, mobile, S-band

88.8 dB

8.4 Overload Recovery

Overload recovery is defined as the time required for the operational amplifier output to recover from a saturated

state to a linear state. The output devices of the operational amplifier enter a saturation region when the output

voltage exceeds the rated operating voltage, because of the high input voltage or the high gain. After the device

enters the saturation region, the charge carriers in the output devices require time to return to the linear state.

After the charge carriers return to the linear state, the device begins to slew at the specified slew rate. Therefore,

the propagation delay (in case of an overload condition) is the sum of the overload recovery time and the slew

time. The overload recovery time for the TLV900x family is approximately 850 ns.

8.5 Shutdown

The TLV9001S, TLV9002S, and TLV9004S devices feature SHDN pins that disable the op amp, placing it into

a low-power standby mode. In this mode, the op amp typically consumes less than 1 µA. The SHDN pins are

active low, meaning that shutdown mode is enabled when the input to the SHDN pin is a valid logic low.

The SHDN pins are referenced to the negative supply voltage of the op amp. The threshold of the shutdown

feature lies around 620 mV (typical) and does not change with respect to the supply voltage. Hysteresis has

been included in the switching threshold to ensure smooth switching characteristics. To ensure optimal shutdown

behavior, the SHDN pins should be driven with valid logic signals. A valid logic low is defined as a voltage

between V– and V– + 0.2 V. A valid logic high is defined as a voltage between V– + 1.2 V and V+. The shutdown

pin circuitry includes a pull-up resistor, which will inherently pull the voltage of the pin to the positive supply rail

if not driven. Thus, to enable the amplifier, the SHDN pins should either be left floating or driven to a valid logic

high. To disable the amplifier, the SHDN pins must be driven to a valid logic low. While we highly recommend

that the shutdown pin be connected to a valid high or a low voltage or driven, we have included a pull-up resistor

connected to VCC. The maximum voltage allowed at the SHDN pins is (V+) + 0.5 V. Exceeding this voltage level

will damage the device.

The SHDN pins are high-impedance CMOS inputs. Dual op amp versions are independently controlled and quad

op amp versions are controlled in pairs with logic inputs. For battery-operated applications, this feature may be

used to greatly reduce the average current and extend battery life. The enable time is 70 µs for full shutdown of

all channels; disable time is 4 µs. When disabled, the output assumes a high-impedance state. This architecture

allows the TLV9002S and TLV9004S to operate as a gated amplifier (or to have the device output multiplexed

onto a common analog output bus). Shutdown time (tOFF) depends on loading conditions and increases as load

resistance increases. To ensure shutdown (disable) within a specific shutdown time, the specified 10-kΩ load

to midsupply (VS / 2) is required. If using the TLV9001S, TLV9002S, or TLV9004S without a load, the resulting

turnoff time significantly increases.

8.6 Device Functional Modes

The TLV900x family has a single functional mode. The devices are powered on as long as the power-supply

voltage is between 1.8 V (±0.9 V) and 5.5 V (±2.75 V).

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TLV9001, TLV9002, TLV9004

SBOS833R – OCTOBER 2017 – REVISED NOVEMBER 2021

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