LTC1606 Linear Technology, LTC1606 Datasheet - Page 5

• Manufacturer Part Number: LTC1606
• Description: 16-Bit/ 250ksps/ Single Supply ADC
• Manufacturer: Linear Technology

POWER REQUIREMENTS
range, otherwise specifications are at T
SYMBOL
V
I
P
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All voltage values are with respect to ground with DGND, AGND1
and AGND2 wired together (unless otherwise noted).
Note 3: When these pin voltages are taken below ground or above V
V
handle input currents of greater than 100mA below ground or above V
without latch-up.
Note 4: When these pin voltages are taken below ground, they will be
clamped by internal diodes. This product can handle input currents of
90mA below ground without latchup. These pins are not clamped to V
Note 5: V
specified.
Note 6: Linearity, offset and full-scale specifications apply for a V
with respect to ground.
Note 7: Integral nonlinearity is defined as the deviation of a code from a
straight line passing through the actual end points of the transfer curve.
The deviation is measured from the center of the quantization band.
Note 8: Bipolar offset is the offset voltage measured from – 0.5 LSB when
the output code flickers between 0000 0000 0000 0000 and 1111 1111
1111 1111.
PIN
V
resistor to the analog input. Full-scale input range is
AGND1 (Pin 2): Analog Ground. Tie to analog ground
plane.
REF (Pin 3): 2.5V Reference Output. Bypass with 2.2 F
tantalum capacitor. Can be driven with an external refer-
ence.
CAP (Pin 4): Reference Buffer Output. Bypass with 10 F
tantalum capacitor. The capacitor output voltage is 4.096V
when REF = 2.5V.
AGND2 (Pin 5): Analog Ground. Tie to analog ground
plane.
D15 to D8 (Pins 6 to 13): Three-State Data Outputs.
Hi-Z state when CS is high or when R/C is low.
DD
DD
DIS
DIG
10V.
IN
U
= V
(Pin 1): Analog Input. Connect through a 200
DD
FUNCTIONS
DD
, they will be clamped by internal diodes. This product can
= 5V, f
U
PARAMETER
Positive Supply Voltage
Positive Supply Current
Power Dissipation
SAMPLE
= 250kHz, t
U
r
W U
= t
f
= 5ns unless otherwise
A
= 25 C. (Note 5)
The
CONDITIONS
(Notes 9, 10)
indicates specifications which apply over the full operating temperature
IN
input
ANA
DD
DD
=
.
Note 9: Guaranteed by design, not subject to test.
Note 10: Recommended operating conditions.
Note 11: With CS low the falling R/C edge starts a conversion. If R/C
returns high at a critical point during the conversion, it can create errors.
For best results, ensure that R/C returns high within 1 s after the start of
the conversion.
Note 12: As measured with fixed resistors shown in Figure 4. Adjustable to
zero with external potentiometer.
Note 13: Full-scale error is the worst-case of –FS or +FS untrimmed
deviation from ideal first and last code transitions, divided by the transition
voltage (not divided by the full-scale range) and includes the effect of
offset error.
Note 14: All specifications in dB are referred to a full-scale 10V input.
Note 15: Full-power bandwidth is defined as full-scale input frequency at
which a signal-to-(noise + distortion) degrades to 60dB or 10 bits of
accuracy.
Note 16: Recovers to specified performance after (2 • FS) input
overvoltage.
DGND (Pin 14): Digital Ground.
D7 to D0 (Pins 15 to 22): Three-State Data Outputs.
Hi-Z state when CS is high or when R/C is low.
BYTE (Pin 23): Byte Select. With BYTE low, data will be
output with Pin 6 (D15) being the MSB and Pin 22 (D0)
being the LSB. With BYTE high the upper eight bits and
the lower eight bits will be switched. The MSB is output
on Pin 15 and bit 8 is output on Pin 22. Bit 7 is output on
Pin 6 and the LSB is output on Pin 13.
R/C (Pin 24): Read/Convert Input. With CS low, a falling
edge on R/C puts the internal sample-and-hold into the
hold state and starts a conversion. With CS low, a rising
edge on R/C enables the output data bits.
4.75
MIN
LTC1606/LTC1606A
TYP
15
75
LTC1606
MAX
5.25
100
20
UNITS
5
mW
mA
V