The LMH6554 device is a high-performance fully differential amplifier designed to provide the exceptional signal fidelity and wide large-signal bandwidth necessary for driving 8- to 16-bit high-speed data acquisition systems. Using TI’s proprietary differential current mode input stage architecture, the LMH6554 has unity gain, small-signal bandwidth of 2.8 GHz and allows operation at gains greater than unity without sacrificing response flatness, bandwidth, harmonic distortion, or output noise performance.
The low-impedance differential output of the device is designed to drive ADC inputs and any intermediate filter stage. The LMH6554 delivers 16-bit linearity up to 75 MHz when driving 2-V peak-to-peak into loads as low as 200 Ω.
The LMH6554 is fabricated in TI's advanced complementary BiCMOS process and is available in a space-saving 14-lead UQFN package for higher performance.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
LMH6554 | UQFN (14) | 2.50 mm × 2.50 mm |
Changes from O Revision (March 2013) to P Revision
Changes from N Revision (March 2013) to O Revision
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
-FB | 7 | O | Feedback from -OUT |
+FB | 4 | O | Feedback from +OUT |
+IN | 6 | I | Positive Input |
-IN | 5 | I | Negative Input |
NC | 11 | — | No Connection |
NC | 14 | — | No Connection |
-OUT | 12 | O | Negative Output |
+OUT | 13 | O | Positive Output |
VCM | 2 | I | Output Common Mode Voltage |
VEN | 9 | I | Enable |
V- | 3 | P | Negative Supply |
V- | 8 | P | Negative Supply |
V+ | 1 | P | Positive Supply |
V+ | 10 | P | Positive Supply |
MIN | MAX | UNIT | ||
---|---|---|---|---|
Supply Voltage (VS = V+ - V−) | 5.5 | V | ||
Common Mode Input Voltage | V- | V+ | V | |
Maximum Operating Junction Temperature | 150 | °C | ||
Maximum Input Current | 30 | mA | ||
Maximum Output Current (pins 12, 13) | (3) | mA | ||
Soldering Information | 260 | °C | ||
Infrared or Convection (30 sec) | ||||
Storage Temperature, Tstg | −65 | 150 | °C |
VALUE | UNIT | |||
---|---|---|---|---|
V(ESD) | Electrostatic discharge | Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) | ±2000 | V |
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) | ±750 | |||
Machine model (MM) | ±250 |
MIN | NOM | MAX | UNIT | |
---|---|---|---|---|
Operating Temperature Range | −40 | +125 | °C | |
Total Supply Voltage Temperature Range | 4.7 | 5.25 | V |
THERMAL METRIC(1) | LMH6554 | UNIT | |
---|---|---|---|
NHJ | |||
14 PINS | |||
RθJA | Junction-to-ambient thermal resistance | 60 | °C/W |
PARAMETER | TEST CONDITIONS | MIN (4) | TYP (3) | MAX (4) | UNIT | ||
---|---|---|---|---|---|---|---|
AC PERFORMANCE (DIFFERENTIAL) | |||||||
SSBW | Small Signal −3 dB Bandwidth (4) | AV = 1, VOUT = 0.2 VPP | 2800 | MHz | |||
AV = 2, VOUT = 0.2 VPP | 2500 | ||||||
AV = 4, VOUT = 0.2 VPP | 1600 | ||||||
LSBW | Large Signal Bandwidth | AV = 1, VOUT = 2 VPP | 1800 | MHz | |||
AV = 2, VOUT = 2 VPP | 1500 | ||||||
AV = 2, VOUT = 1.5 VPP | 1900 | ||||||
0.1 dBBW | 0.1 dB Bandwidth | AV = 2, VOUT = 0.2 VPP, RF = 250Ω | 830 | MHz | |||
SR | Slew Rate | 4V Step | 6200 | V/μs | |||
tr/tf | Rise/Fall Time | 2V Step, 10–90% | 290 | ps | |||
0.4V Step, 10–90% | 150 | ||||||
Ts_0.1 | 0.1% Settling Time | 2V Step, RL = 200Ω | 4 | ns | |||
Overdrive Recovery Time | VIN = 2V, AV = 5 V/V | 6 | ns | ||||
DISTORTION AND NOISE RESPONSE | |||||||
HD2 | 2nd Harmonic Distortion | VOUT = 2 VPP, f = 20 MHz | -102 | dBc | |||
VOUT = 2 VPP, f = 75 MHz | -96 | ||||||
VOUT = 2 VPP, f = 125 MHz | -87 | ||||||
VOUT = 2 VPP, f = 250 MHz | −79 | ||||||
VOUT = 1.5 VPP, f = 250 MHz | −81 | ||||||
HD3 | 3rd Harmonic Distortion | VOUT = 2 VPP, f = 20 MHz | −110 | dBc | |||
VOUT = 2 VPP, f = 75 MHz | −97 | ||||||
VOUT = 2 VPP, f = 125 MHz | −87 | ||||||
VOUT = 2 VPP, f = 250 MHz | −70 | ||||||
VOUT = 1.5 VPP, f = 250 MHz | −75 | ||||||
OIP3 | Output 3rd-Order Intercept | f = 150 MHz, VOUT = 2VPP Composite | 46.5 | dBm | |||
IMD3 | Two-Tone Intermodulation | f = 150 MHz, VOUT = 2VPP Composite | −97 | dBc | |||
en | Input Voltage Noise Density | f = 10 MHz | 0.9 | nV/√Hz | |||
in+ | Input Noise Current | f = 10 MHz | 11 | pA/√Hz | |||
in- | Input Noise Current | f = 10 MHz | 11 | pA/√Hz | |||
NF | Noise Figure (8) | 50Ω System, AV = 7.3, 100 MHz | 7.7 | dB | |||
INPUT CHARACTERISTICS | |||||||
IBI+ / IBI- | −75 | −29 | 20 | µA | |||
TCIbi | Input Bias Current Temperature Drift | 8 | µA/°C | ||||
IBID | Input Bias Current (6) | VCM = 0V, VID = 0V, IBOFFSET = (IB- - IB+)/2 |
−10 | 1 | 10 | μA | |
TCIbo | Input Bias Current Diff Offset Temperature Drift (3) | 0.006 | µA/°C | ||||
CMRR | Common Mode Rejection Ratio | DC, VCM = 0V, VID = 0V | 83 | dB | |||
RIN | Differential Input Resistance | Differential | 19 | Ω | |||
CIN | Differential Input Capacitance | Differential | 1 | pF | |||
CMVR | Input Common Mode Voltage Range | CMRR > 32 dB | ±1.25 | ±1.3 | V | ||
OUTPUT PERFORMANCE | |||||||
Output Voltage Swing (3) | Single-Ended Output | ±1.35 | ±1.42 | V | |||
IOUT | Output Current (3) | VOUT = 0V | ±120 | ±150 | mA | ||
ISC | Short Circuit Current | One Output Shorted to Ground VIN = 2V Single-Ended (2) |
150 | mA | |||
Output Balance Error | ΔVOUT Common Mode /ΔVOUT Differential, ΔVOD = 1V, f < 1 Mhz | −64 | dB | ||||
OUTPUT COMMON MODE CONTROL CIRCUIT | |||||||
Common Mode Small Signal Bandwidth | VIN+ = VIN− = 0V | 500 | MHz | ||||
Slew Rate | VIN+ = VIN− = 0V | 200 | V/μs | ||||
VOSCM | Input Offset Voltage | Common Mode, VID = 0, VCM = 0V | −16 | −6.5 | 4 | mV | |
IOSCM | Input Offset Current | (5) | 6 | 18 | μA | ||
Voltage Range | ±1.18 | ±1.25 | V | ||||
CMRR | Measure VOD, VID = 0V | 82 | dB | ||||
Input Resistance | 180 | kΩ | |||||
Gain | ΔVOCM/ΔVCM | 0.99 | 0.995 | 1.0 | V/V | ||
MISCELLANEOUS PERFORMANCE | |||||||
ZT | Open Loop Transimpedance Gain | Differential | 180 | kΩ | |||
PSRR | Power Supply Rejection Ratio | DC, ΔV+ = ΔV− = 1V | 74 | 95 | dB | ||
IS | Supply Current (3) | RL = ∞ | 46 | 52 | 57 | mA | |
At extreme temperatures | 60 | ||||||
Enable Voltage Threshold | Single 5V Supply (7) | 2.5 | V | ||||
Disable Voltage Threshold | Single 5V Supply (7) | 2.5 | V | ||||
Enable/Disable Time | 15 | ns | |||||
ISD | Supply Current, Disabled | Enable=0, Single 5-V supply | 450 | 510 | 570 | μA | |
At extreme temperatures | 600 |