TSA7887
ELECTRICAL CHARACTERISTICS
VDD = +2.7V to +5.25V; VREF = 2.5V External/Internal Reference unless otherwise noted; f
SCLK
= 2 MHz;
T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Parameter
DYNAMIC PERFORMANCE
Signal to Noise + Distortion Ratio (SNR)
2
Total Harmonic Distortion (THD)
Peak Harmonic or Spurious Noise
Intermodulation Distortion (IMD)
Second-Order Terms
Third-Order Terms
Channel-to-Channel Isolation
Full-Power Bandwidth
DC ACCURACY(Any
channel)
Resolution
Integral Nonlinearity
Differential Nonlinearity
Offset Error
Offset Error Match
Gain Error
Gain Error Match
ANALOG INPUT
Input Voltage Ranges
Leakage Current
Input Capacitance
REFERENCE INPUT/OUTPUT
REFIN Input Voltage Range
Input Impedance
REFOUT Output Voltage
REFOUT Temperature Coefficient
LOGIC INPUTS
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current, I
IN
Input Capacitance, C
IN3
LOGIC OUTPUTS
Output High Voltage, V
OH
Output Low Voltage, V
OL
Floating-State Leakage Current
Floating-State Output Capacitance
4
Output Coding
CONVERSION RATE
Throughput Time
Track-and-Hold Acquisition Time
Conversion Time
A Version
1
71
−80
–80
−80
−80
−80
2.5
12
±2
±2
±3
±4
±6
0.5
±2
±1
±6
2
0 to VREF
±5
10
2.5/VDD
10
2.45/2.55
±50
2.4
2.1
0.8
±1
10
B Version
1
71
−80
−80
−80
−80
−80
2.5
12
±1
±1
±3
±4
±6
0.5
±2
±1
±6
2
0 to VREF
±5
10
2.5/VDD
10
2.45/2.55
±50
2.4
2.1
0.8
±1
10
Unit
dB (typ)
dB (typ)
db (typ)
dB (typ)
dB (typ)
dB (typ)
MHz (typ)
Bits
LSB (max)
LSB (max)
LSB (max)
LSB (max)
LSB (typ)
LSB (max)
LSB (typ)
LSB (max)
LSB (typ)
LSB (max)
V
μA (max)
pF (typ)
V (min/max)
kΩ (typ)
V (min/max)
ppm/°C (typ)
V (min)
V (min)
V (max)
μA (max)
pF (max)
Functional from 1.2V
Very high impedance if internal reference disabled
Test Conditions/Comments
f
IN
= 10 kHz sine wave, f
SAMPLE
= 125 ksps
f
IN
= 10 kHz sine wave, f
SAMPLE
= 125 ksps
f
IN
= 10 kHz sine wave, f
SAMPLE
= 125 ksps
f1 = 9.983 kHz, f2 = 10.05 kHz, f
SAMPLE
= 125 ksps
f1 = 9.983 kHz, f2 = 10.05 kHz, f
SAMPLE
= 125 ksps
f
IN
= 25 kHz
Measured at 3 dB down
Guaranteed no missing codes to 11 bits (A Grade)
VDD = 5V, dual-channel mode
VDD = 3V, dual-channel mode
Single-channel mode
Dual-channel mode
Single-channel mode, external reference
Single-channel mode, internal reference
VDD = 4.75V to 5.25V
VDD = 2.7V to 3.6V
VDD = 2.7 V to 5.25 V
Typically 10 nA, V
IN
= 0 V or VDD
V
DD
− 0.5
V
DD
− 0.5
V (min)
0.4
0.4
V (max)
±1
±1
μA (max)
10
10
pF (max)
Straight (Natural) Binary
I
SOURCE
= 200 μA
V
DD
= 2.7V to 5.25V
I
SINK
= 200 μA
16
1.5
14.5
16
1.5
14.5
SCLK cycles
SCLK cycles
SCLK cycles
Conversion time plus acquisition time is 125 ksps,
with 2 MHz Clock
7.25 μs (2 MHz Clock)
TSA7887DS r1p0
Page 3
RTFDS
TOUCHSTONE [ TOUCHSTONE SEMICONDUCTOR INC ]
